In order to make use of history in the App component use it with withRouter.You need to make use of withRouter only when your component is not receiving the Router props,. The following worked for me. That is the code, when I use FormData : var form_data = new FormData("#my-awesome-dropzone"); var myTable = document.getElementById("myTable"); var rowCount = myTable.rows.length; for (var x=rowCount-1; x>0; x--) { myTable.deleteRow(x); } Neither of these has helped me fix the problem. Uncaught TypeError: Failed to construct 'FormData': parameter 1 is not of type 'HTMLFormElement'. However, you are trying to run it on an array of elements var text = document.getElementsByClassName('js-text');.This method returns an array of all elements with that class name. when you call Logout at onClick you are calling hooks from your function Logout outside of a component body, what's is not allowed.. You can abstract your Logout logic to a custom hook where it returns the logoutUser function:. await setProducts() And the last thing you have to do is checking response.data value. So you have to add await before setProducts. Try by putting it inside DOMContentLoaded event You can first check app/assets/application.js file. I think that is a possible reason. but setProducts is an async function, too. However, you are trying to run it on an array of elements var text = document.getElementsByClassName('js-text');.This method returns an array of all elements with that class name. False. I'm basing this Stack Overflow Public questions & answers; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Talent Build your employer brand ; Advertising Reach developers & technologists worldwide; About the company That is the code, when I use FormData : var form_data = new FormData("#my-awesome-dropzone"); So document.getElementsByClassName('rhap_progress-indicator') needs to also select an index of the array: document.getElementsByClassName('rhap_progress-indicator')[0]. A Window object and a dedicated worker that it created. False. Background should be thought of as headless (though in mv2 it is possible to view the generated page, but actual user will not see it). The problem is here: document.getElementById(elementId).value You know that HTMLElement returned from getElementById() is actually an instance of HTMLInputElement inheriting from it because you are passing an ID of input element. Yes, man, actually, the 'main' bug that was bothering me was in call the "popularCombo" function. It is telling you that it cannot access the property innerHTML of null.In other words, that objUserID is null and that you cannot access a property of it.. If there is only one such element, you could use the array indexer to retrieve the first one. document.getElementsByClassName returns an array. The following worked for me. The Uncaught TypeError: Illegal invocation is located in the "jquery-1.7.2.min.js" file, Ajax function not working inside If condition in jQuery. It thinks the variable username is null. Uncaught TypeError: this.props.data.map is not a function I've looked at: React code throwing TypeError: this.props.data.map is not a function React.js this.props.data.map() is not a function. Before you go too far down the rabbit hole of JavaScript-based smooth scrolling, know that there is a native CSS feature for this: scroll-behavior. export default function useLogOut() { const history = useHistory(); // we don't useEffect here, we are only interested in function In order to make use of history in the App component use it with withRouter.You need to make use of withRouter only when your component is not receiving the Router props,. Yes, man, actually, the 'main' bug that was bothering me was in call the "popularCombo" function. var myTable = document.getElementById("myTable"); var rowCount = myTable.rows.length; for (var x=rowCount-1; x>0; x--) { myTable.deleteRow(x); } From the docs, here is what it says with regards to Class.contextType:. Sorted by: Reset to default Highest score (default) Trending (recent votes count more) Date modified (newest first) Date created (oldest first) Sorted by: Reset to default Highest score (default) Trending (recent votes count more) Date modified (newest first) Date created (oldest first) Background should be thought of as headless (though in mv2 it is possible to view the generated page, but actual user will not see it). Sorted by: Reset to default Highest score (default) Trending (recent votes count more) Date modified (newest first) Date created (oldest first) getElementById will continue to return undefined after checking naming or waiting for content load. export default function useLogOut() { const history = useHistory(); // we don't useEffect here, we are only interested in function See more linked questions. Try by putting it inside DOMContentLoaded event The .select() method does indeed retrieve the text from a field. Sorted by: Reset to default Highest score (default) Trending (recent votes count more) Date modified (newest first) Date created (oldest first) Removing the callback function would do the trick (function() { //comment this out //your code })(); //comment this out Before you go too far down the rabbit hole of JavaScript-based smooth scrolling, know that there is a native CSS feature for this: scroll-behavior. html { scroll-behavior: smooth; } Stack Overflow Public questions & answers; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Talent Build your employer brand ; Advertising Reach developers & technologists worldwide; About the company However, you are trying to run it on an array of elements var text = document.getElementsByClassName('js-text');.This method returns an array of all elements with that class name. Sorted by: Reset to default Highest score (default) Trending (recent votes count more) Date modified (newest first) Date created (oldest first) when you call Logout at onClick you are calling hooks from your function Logout outside of a component body, what's is not allowed.. You can abstract your Logout logic to a custom hook where it returns the logoutUser function:. Stack Overflow Public questions & answers; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Talent Build your employer brand ; Advertising Reach developers & technologists worldwide; About the company Uncaught TypeError: Failed to construct 'FormData': parameter 1 is not of type 'HTMLFormElement'. So document.getElementsByClassName('rhap_progress-indicator') needs to also select an index of the array: document.getElementsByClassName('rhap_progress-indicator')[0]. The alternative is to use document.querySelector('.rhap_progress-indicator'), which returns the element if it exists. Before you go too far down the rabbit hole of JavaScript-based smooth scrolling, know that there is a native CSS feature for this: scroll-behavior. See that your function is not in a callback function if you are using an external js file. Stack Overflow Public questions & answers; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Talent Build your employer brand ; Advertising Reach developers & technologists worldwide; About the company I'm basing this It appears that you're using the Router from react-router-dom, and not the one from the react-location library, which is the one which provides the useMatch() hook that you need.. You need to use the Router from react-location, and then link your with the react-location library by passing an instance of ReactLocation via the location prop. function int() { var source = document.getElementById('j1_64_anchor').click; } is getting executed before the dom is ready. Using browser development tools see if you can call the function manually from the console. ; A worker (of any type) and a dedicated worker it created. It appears that you're using the Router from react-router-dom, and not the one from the react-location library, which is the one which provides the useMatch() hook that you need.. You need to use the Router from react-location, and then link your with the react-location library by passing an instance of ReactLocation via the location prop. How can I reset the WindowManager resolution and DPI settings in the Google TV user selection screen? False. ## 3 ways for binding this to the below function## I got my answer.I just replaced getElementByName with getElementById var searchText = document.getElementById("search").value; Also whenever I typed the text I was pressing 'Enter' button instead of using onClick event. 428 React - uncaught TypeError: Cannot read property 'setState' of undefined export default function useLogOut() { const history = useHistory(); // we don't useEffect here, we are only interested in function Try by putting it inside DOMContentLoaded event function int() { var source = document.getElementById('j1_64_anchor').click; } is getting executed before the dom is ready. The contextType property on a class can be assigned a Context object created by React.createContext().Using this property lets you consume the nearest current value of that Context type using this.context.You can reference this in any of the lifecycle methods including The alternative is to use document.querySelector('.rhap_progress-indicator'), which returns the element if it exists. I think that is a possible reason. document.getElementsByClassName returns an array. I'm basing this It thinks the variable username is null. The other problem is that you call setProducts in an async function. Thanks for your support.. :) To add an additional class to an element: To add a class to an element, without removing/affecting existing values, append a space and the new classname, like so: document.getElementById("MyElement").className += " MyClass"; Uncaught TypeError: state.productDetails is not a function Hot Network Questions How would a city/town exist inside the territory of a country but the country chooses not govern it? document.getElementById("MyElement").className = "MyClass"; (You can use a space-delimited list to apply multiple classes.) Sorted by: Reset to default Highest score (default) Trending (recent votes count more) Date modified (newest first) Date created (oldest first) getElementById will continue to return undefined after checking naming or waiting for content load. The Uncaught TypeError: Illegal invocation is located in the "jquery-1.7.2.min.js" file, Ajax function not working inside If condition in jQuery. So I guess you want to change that to: So I guess you want to change that to: That is the code, when I use FormData : var form_data = new FormData("#my-awesome-dropzone"); So, whenever you call document.getElementById again, after that, you're trying to execute a string, hence why you get not a function. There, I got the exception by passing the line Hey! Background should be thought of as headless (though in mv2 it is possible to view the generated page, but actual user will not see it). The following pairs of global objects are each within the same agent cluster, and thus can use SharedArrayBuffer instances to share memory with each other:. The Uncaught TypeError: Illegal invocation is located in the "jquery-1.7.2.min.js" file, Ajax function not working inside If condition in jQuery. I got my answer.I just replaced getElementByName with getElementById var searchText = document.getElementById("search").value; Also whenever I typed the text I was pressing 'Enter' button instead of using onClick event. let myDivs = document.getElementsByClass('myDiv'); let text=myDivs[2].innerText; // Uncaught TypeError: Cannot read property 'innerText' of undefined Compartir Mejora esta respuesta Similarly in statically typed Java this won't compile: public Object foo() { return 42; } foo().signum(); ; A worker (of any type) and a dedicated worker it created. There is no button in the background unless it is programmatically generated first. There is no button in the background unless it is programmatically generated first. The problem is here: document.getElementById(elementId).value You know that HTMLElement returned from getElementById() is actually an instance of HTMLInputElement inheriting from it because you are passing an ID of input element. Three options: If script is the last tag of the body, the DOM would be ready before script tag executes; When the DOM is ready, "readyState" will change to "complete" Put everything under 'DOMContentLoaded' event listener; onreadystatechange Neither of these has helped me fix the problem. Uncaught TypeError: this.props.data.map is not a function I've looked at: React code throwing TypeError: this.props.data.map is not a function React.js this.props.data.map() is not a function. The .select() method does indeed retrieve the text from a field. It is telling you that it cannot access the property innerHTML of null.In other words, that objUserID is null and that you cannot access a property of it.. The other problem is that you call setProducts in an async function. In my case, I use rails framework and require jQuery twice. Thanks for your support.. :) but setProducts is an async function, too. See more linked questions. It appears that you're using the Router from react-router-dom, and not the one from the react-location library, which is the one which provides the useMatch() hook that you need.. You need to use the Router from react-location, and then link your with the react-location library by passing an instance of ReactLocation via the location prop. ## 3 ways for binding this to the below function## There is no button in the background unless it is programmatically generated first. 428 React - uncaught TypeError: Cannot read property 'setState' of undefined From the docs, here is what it says with regards to Class.contextType:. Thanks for your support.. :) The other problem is that you call setProducts in an async function. From the docs, here is what it says with regards to Class.contextType:. Stack Overflow Public questions & answers; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Talent Build your employer brand ; Advertising Reach developers & technologists worldwide; About the company React - uncaught TypeError: Cannot read property 'setState' of undefined 134 react router v^4.0.0 Uncaught TypeError: Cannot read property 'location' of undefined I needed to delete all rows except the first and solution posted by @strat but that resulted in uncaught exception (referencing Node in context where it does not exist). Yes, man, actually, the 'main' bug that was bothering me was in call the "popularCombo" function. See that your function is not in a callback function if you are using an external js file. Uncaught TypeError: Failed to construct 'FormData': parameter 1 is not of type 'HTMLFormElement'. There, I got the exception by passing the line The contextType property on a class can be assigned a Context object created by React.createContext().Using this property lets you consume the nearest current value of that Context type using this.context.You can reference this in any of the lifecycle methods including The .select() method does indeed retrieve the text from a field. So, whenever you call document.getElementById again, after that, you're trying to execute a string, hence why you get not a function. Hey! document.getElementById("MyElement").className = "MyClass"; (You can use a space-delimited list to apply multiple classes.) See more linked questions. In my case, I use rails framework and require jQuery twice. The problem is here: document.getElementById(elementId).value You know that HTMLElement returned from getElementById() is actually an instance of HTMLInputElement inheriting from it because you are passing an ID of input element. React - uncaught TypeError: Cannot read property 'setState' of undefined 134 react router v^4.0.0 Uncaught TypeError: Cannot read property 'location' of undefined In order to make use of history in the App component use it with withRouter.You need to make use of withRouter only when your component is not receiving the Router props,. I've tried this and still get Uncaught TypeError: Cannot read properties of null (reading 'appendChild') but now for document.body.appendChild(newDiv); Samuel Van Bladel Oct 21, 2021 at 12:11 let myDivs = document.getElementsByClass('myDiv'); let text=myDivs[2].innerText; // Uncaught TypeError: Cannot read property 'innerText' of undefined Compartir Mejora esta respuesta html { scroll-behavior: smooth; } So I guess you want to change that to: So I guess you want to change that to: Sorted by: Reset to default Highest score (default) Trending (recent votes count more) Date modified (newest first) Date created (oldest first) Using browser development tools see if you can call the function manually from the console. but setProducts is an async function, too. The following pairs of global objects are each within the same agent cluster, and thus can use SharedArrayBuffer instances to share memory with each other:. It is telling you that it cannot access the property innerHTML of null.In other words, that objUserID is null and that you cannot access a property of it.. This may happen in cases when your component is a nested child of a component rendered by the Router or you haven't passed the Router props to it or when the component is not linked to In my case, I use rails framework and require jQuery twice. React - uncaught TypeError: Cannot read property 'setState' of undefined 134 react router v^4.0.0 Uncaught TypeError: Cannot read property 'location' of undefined A Window object A and the Window object of an iframe element that A created that could be same origin-domain Check the (this) if you doing setState inside any function (i.e handleChange) check whether the function bind to this or the function should be arrow function . There, I got the exception by passing the line A Window object and a dedicated worker that it created. Put another way, your element does not exist. ## 3 ways for binding this to the below function## A Window object A and the Window object of an iframe element that A created that could be same origin-domain Uncaught TypeError: this.props.data.map is not a function I've looked at: React code throwing TypeError: this.props.data.map is not a function React.js this.props.data.map() is not a function. I've tried this and still get Uncaught TypeError: Cannot read properties of null (reading 'appendChild') but now for document.body.appendChild(newDiv); Samuel Van Bladel Oct 21, 2021 at 12:11 So I guess you want to change that to: So I guess you want to change that to: To add an additional class to an element: To add a class to an element, without removing/affecting existing values, append a space and the new classname, like so: document.getElementById("MyElement").className += " MyClass"; Is there a standard function to check for null, undefined, or blank variables in JavaScript? You can first check app/assets/application.js file. Uncaught TypeError: state.productDetails is not a function Hot Network Questions How would a city/town exist inside the territory of a country but the country chooses not govern it? await setProducts() And the last thing you have to do is checking response.data value. when you call Logout at onClick you are calling hooks from your function Logout outside of a component body, what's is not allowed.. You can abstract your Logout logic to a custom hook where it returns the logoutUser function:. Neither of these has helped me fix the problem. let myDivs = document.getElementsByClass('myDiv'); let text=myDivs[2].innerText; // Uncaught TypeError: Cannot read property 'innerText' of undefined Compartir Mejora esta respuesta Stack Overflow Public questions & answers; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Talent Build your employer brand ; Advertising Reach developers & technologists worldwide; About the company var myTable = document.getElementById("myTable"); var rowCount = myTable.rows.length; for (var x=rowCount-1; x>0; x--) { myTable.deleteRow(x); } I needed to delete all rows except the first and solution posted by @strat but that resulted in uncaught exception (referencing Node in context where it does not exist). See that your function is not in a callback function if you are using an external js file. Sorted by: Reset to default Highest score (default) Trending (recent votes count more) Date modified (newest first) Date created (oldest first) getElementById will continue to return undefined after checking naming or waiting for content load. If there is only one such element, you could use the array indexer to retrieve the first one. Sorted by: Reset to default Highest score (default) Trending (recent votes count more) Date modified (newest first) Date created (oldest first) If there is only one such element, you could use the array indexer to retrieve the first one. Using browser development tools see if you can call the function manually from the console. If you still get Function not defined then do the following: Is there a standard function to check for null, undefined, or blank variables in JavaScript? A Window object and a dedicated worker that it created. Three options: If script is the last tag of the body, the DOM would be ready before script tag executes; When the DOM is ready, "readyState" will change to "complete" Put everything under 'DOMContentLoaded' event listener; onreadystatechange So you have to add await before setProducts. The following worked for me. Put another way, your element does not exist. Removing the callback function would do the trick (function() { //comment this out //your code })(); //comment this out await setProducts() And the last thing you have to do is checking response.data value. 428 React - uncaught TypeError: Cannot read property 'setState' of undefined How can I reset the WindowManager resolution and DPI settings in the Google TV user selection screen? A Window object A and the Window object of an iframe element that A created that could be same origin-domain If you still get Function not defined then do the following: I've tried this and still get Uncaught TypeError: Cannot read properties of null (reading 'appendChild') but now for document.body.appendChild(newDiv); Samuel Van Bladel Oct 21, 2021 at 12:11 Removing the callback function would do the trick (function() { //comment this out //your code })(); //comment this out Hey! So you have to add await before setProducts. document.getElementsByClassName returns an array. This may happen in cases when your component is a nested child of a component rendered by the Router or you haven't passed the Router props to it or when the component is not linked to This may happen in cases when your component is a nested child of a component rendered by the Router or you haven't passed the Router props to it or when the component is not linked to So document.getElementsByClassName('rhap_progress-indicator') needs to also select an index of the array: document.getElementsByClassName('rhap_progress-indicator')[0]. Similarly in statically typed Java this won't compile: public Object foo() { return 42; } foo().signum(); Check the (this) if you doing setState inside any function (i.e handleChange) check whether the function bind to this or the function should be arrow function . html { scroll-behavior: smooth; } function int() { var source = document.getElementById('j1_64_anchor').click; } is getting executed before the dom is ready. To add an additional class to an element: To add a class to an element, without removing/affecting existing values, append a space and the new classname, like so: document.getElementById("MyElement").className += " MyClass"; Put another way, your element does not exist. How can I reset the WindowManager resolution and DPI settings in the Google TV user selection screen? I needed to delete all rows except the first and solution posted by @strat but that resulted in uncaught exception (referencing Node in context where it does not exist). Similarly in statically typed Java this won't compile: public Object foo() { return 42; } foo().signum(); If you still get Function not defined then do the following: document.getElementById("MyElement").className = "MyClass"; (You can use a space-delimited list to apply multiple classes.) ; A worker (of any type) and a dedicated worker it created. It thinks the variable username is null. The following pairs of global objects are each within the same agent cluster, and thus can use SharedArrayBuffer instances to share memory with each other:. Three options: If script is the last tag of the body, the DOM would be ready before script tag executes; When the DOM is ready, "readyState" will change to "complete" Put everything under 'DOMContentLoaded' event listener; onreadystatechange I got my answer.I just replaced getElementByName with getElementById var searchText = document.getElementById("search").value; Also whenever I typed the text I was pressing 'Enter' button instead of using onClick event. The alternative is to use document.querySelector('.rhap_progress-indicator'), which returns the element if it exists. So, whenever you call document.getElementById again, after that, you're trying to execute a string, hence why you get not a function. I think that is a possible reason. Check the (this) if you doing setState inside any function (i.e handleChange) check whether the function bind to this or the function should be arrow function .
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