javascript

react-router-dom v6 Routes showing blank page

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In react-router-dom@6 the Route components don’t render routed content as children, they use the element prop. Other Route components are the only valid children of a Route in the case of building nested routes. export default function WebRoutes() { return ( <Routes> <Route path=”https://stackoverflow.com/” element={<Welcome />} /> </Routes> ); } Ensure that you have rendered … Read more

How do I change the text of an element using JavaScript?

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For modern browsers you should use: document.getElementById(“myspan”).textContent=”newtext”; While older browsers may not know textContent, it is not recommended to use innerHTML as it introduces an XSS vulnerability when the new text is user input (see other answers below for a more detailed discussion): //POSSIBLY INSECURE IF NEWTEXT BECOMES A VARIABLE!! document.getElementById(“myspan”).innerHTML=”newtext”;

What is the difference between post api call and form submission with post method?

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There are multiple ways to submit a form from the browser: HTML form, submit button, user presses submit button, no Javascript involved. HTML form in the page, Javascript gets DOM element for the form and calls .submit() method on the form object. Ajax call using the XMLHttpRequest interface with the POST method and manually sending … Read more

Find the exact height and width of the viewport in a cross-browser way

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You might try this: function getViewport() { var viewPortWidth; var viewPortHeight; // the more standards compliant browsers (mozilla/netscape/opera/IE7) use window.innerWidth and window.innerHeight if (typeof window.innerWidth != ‘undefined’) { viewPortWidth = window.innerWidth, viewPortHeight = window.innerHeight } // IE6 in standards compliant mode (i.e. with a valid doctype as the first line in the document) else if … Read more

How do I capture a key press (or keydown) event on a div element?

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(1) Set the tabindex attribute: <div id=”mydiv” tabindex=”0″ /> (2) Bind to keydown: $(‘#mydiv’).on(‘keydown’, function(event) { //console.log(event.keyCode); switch(event.keyCode){ //….your actions for the keys ….. } }); To set the focus on start: $(function() { $(‘#mydiv’).focus(); }); To remove – if you don’t like it – the div focus border, set outline: none in the CSS. … Read more