Most viewed questions in Java-Script

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How to call jQuery UI Dialog with ASP.NET button postback?

Hello @kartik, To solve the problem with ASP:Button ...READ MORE

Apr 28, 2020 in Java-Script by Niroj
 • 82,880 points • 3,146 views
0 votes
1 answer

How do I check if an HTML element is empty using jQuery?

Hello @kartik, Try: if ($('#element').is(':empty')){ //do something }  If you ...READ MORE

Aug 25, 2020 in Java-Script by Niroj
 • 82,880 points • 3,137 views
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1 answer

How to trigger the window resize event in JavaScript?

Hello @kartik, Try this: window.dispatchEvent(new Event('resize') ...READ MORE

Aug 25, 2020 in Java-Script by Niroj
 • 82,880 points • 3,126 views
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1 answer

How to check if a specific key is present in a hash or not?

Hello @kartik, While Hash#has_key? gets the job done, as it has ...READ MORE

Jul 24, 2020 in Java-Script by Niroj
 • 82,880 points • 3,044 views
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1 answer

How is the 'use strict' statement interpreted in Node.js?

Hello @kartik, "use strict"; Basically it enables the strict ...READ MORE

Oct 8, 2020 in Java-Script by Niroj
 • 82,880 points • 3,011 views
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1 answer

Error:Parsing JSON giving “unexpected token o” error

Hello @kartik, Your data is already an object. ...READ MORE

Jun 19, 2020 in Java-Script by Niroj
 • 82,880 points • 2,968 views
0 votes
1 answer

How do I pass command line arguments to a Node.js program?

Hello @kartik, If your script is called myScript.js ...READ MORE

May 5, 2020 in Java-Script by Niroj
 • 82,880 points • 2,939 views
+1 vote
1 answer

How to download a file from NodeJS Server using Express?

Hello @kartik, Express has a helper for this as: app.get('/download', function(req, ...READ MORE

Sep 23, 2020 in Java-Script by Niroj
 • 82,880 points • 2,904 views
0 votes
1 answer

How to change programmatically the src of an img tag?

Hello @kartik, Give your img tag an id, ...READ MORE

Sep 4, 2020 in Java-Script by Niroj
 • 82,880 points • 2,841 views
0 votes
1 answer

How do I disable right click on my web page?

Hello @kartik, You can do that with JavaScript ...READ MORE

Sep 23, 2020 in Java-Script by Niroj
 • 82,880 points • 2,794 views
0 votes
0 answers

Uncaught TypeError: Cannot read property 'top' of undefined

I have two different kinds of sticky ...READ MORE

May 11, 2022 in Java-Script by Kichu
 • 19,050 points • 2,784 views
0 votes
1 answer

How to rollback a specific migration?

Hello @kartik, Try this: rake db:migrate:down VERSION=20100905201547 will roll back ...READ MORE

Jul 24, 2020 in Java-Script by Niroj
 • 82,880 points • 2,734 views
0 votes
1 answer

Open a URL in a new tab (and not a new window)

Nothing an author can do can choose ...READ MORE

Feb 23, 2022 in Java-Script by Aditya
 • 7,680 points • 2,686 views
0 votes
1 answer

Error:“Cross origin requests are only supported for HTTP”when loading a local file

Hii @kartik, You are loading the model using ...READ MORE

Jun 8, 2020 in Java-Script by Niroj
 • 82,880 points • 2,646 views
0 votes
1 answer

How to convert an Object {} to an Array [] of key-value pairs in JavaScript?

Hello @kartik, You can use Object.keys() and map() to do this var obj ...READ MORE

Sep 4, 2020 in Java-Script by Niroj
 • 82,880 points • 2,645 views
0 votes
1 answer

How to stop event propagation with inline onclick attribute?

Hello @kartik, Use event.stopPropagation(). <span onclick="event.stopPropagation(); alert('you clicked inside the ...READ MORE

Sep 23, 2020 in Java-Script by Niroj
 • 82,880 points • 2,620 views
0 votes
1 answer

Error :jquery's .ajax() method not sending my session cookie

Hello @kartik, AJAX calls only send Cookies if ...READ MORE

Aug 25, 2020 in Java-Script by Niroj
 • 82,880 points • 2,613 views
0 votes
1 answer

How can I Abort Ajax requests using jQuery?

Hello @kartik, It is always best practice to ...READ MORE

Jun 18, 2020 in Java-Script by Niroj
 • 82,880 points • 2,588 views
0 votes
1 answer

Error:Invariant Violation: _registerComponent(…): Target container is not a DOM element

Hii @kartik, Basically what you done is right, ...READ MORE

Jun 8, 2020 in Java-Script by Niroj
 • 82,880 points • 2,524 views
0 votes
1 answer

How do I post a form in laravel 5 using ajax?

Hello @kartik, You can solve this error by ...READ MORE

Jun 11, 2020 in Java-Script by Niroj
 • 82,880 points • 2,477 views
0 votes
1 answer

How to detect a 'touch screen' device using JavaScript?

Hello @kartik, Use this: function is_touch_device() { ...READ MORE

Sep 18, 2020 in Java-Script by Niroj
 • 82,880 points • 2,472 views
0 votes
1 answer

Why are preload link not working for JSON requests ?

Hii @kartik, You have to add as="fetch" for JSON files. ...READ MORE

Jun 19, 2020 in Java-Script by Niroj
 • 82,880 points • 2,434 views
0 votes
1 answer

How to Change the selected value of a drop-down list with jQuery?

Hello @kartik, With hidden field you need to ...READ MORE

Sep 9, 2020 in Java-Script by Niroj
 • 82,880 points • 2,428 views
0 votes
1 answer

How to get the browser to navigate to URL in JavaScript?

Hii, This works in all browsers: window.location.href = '...'; If ...READ MORE

May 28, 2020 in Java-Script by Niroj
 • 82,880 points • 2,398 views
0 votes
1 answer

What is an appropriate content-type header for JavaScript files?

Hello @kartik, JS has two registered MIME types:  The ...READ MORE

Jul 7, 2020 in Java-Script by Niroj
 • 82,880 points • 2,347 views
0 votes
1 answer

How to Determine if page is valid in JavaScript - ASP.NET?

Hello @kartik,  Make the call on an input ...READ MORE

Sep 9, 2020 in Java-Script by Niroj
 • 82,880 points • 2,343 views
0 votes
1 answer

Error:“Access is denied” error on accessing iframe document object

Hello @kartik, Basically, this error occurs when the ...READ MORE

Apr 27, 2020 in Java-Script by Niroj
 • 82,880 points • 2,343 views
0 votes
1 answer

How to print a circular structure in a JSON-like format?

Hello, You can use util.inspect(object) in node.js. It automatically ...READ MORE

Apr 24, 2020 in Java-Script by Niroj
 • 82,880 points • 2,216 views
0 votes
1 answer

How to dynamically load JS inside JS?

Hello @kartik, The script is not added to ...READ MORE

Aug 25, 2020 in Java-Script by Niroj
 • 82,880 points • 2,213 views
0 votes
1 answer

How to get function parameter names/values dynamically?

Hello @kartik, The following function will return an ...READ MORE

Sep 23, 2020 in Java-Script by Niroj
 • 82,880 points • 2,205 views
0 votes
1 answer

How to return JSON with ASP.NET & jQuery?

Hello @kartik, You need to do something like ...READ MORE

Sep 9, 2020 in Java-Script by Niroj
 • 82,880 points • 2,139 views
0 votes
1 answer

How do I search for a key of object in javascript?

Use hasOwnProperty(key) for (let i = 0; i ...READ MORE

Oct 14, 2020 in Java-Script by Niroj
 • 82,880 points • 2,100 views
0 votes
1 answer

JavaScript equivalent of PHP's preg_replace

Hello @klartik, Jusr use the global flag, g: foo.replace(/<br>/g,"\n") Hope it ...READ MORE

Jul 6, 2020 in Java-Script by Niroj
 • 82,880 points • 2,098 views
0 votes
1 answer

Hi, how does one kill the whatsapp message loop with a code instead of closing whatsapp-web?

Hello @Felix , Use this code: <script> function simulateMouseEvents(element, eventName) ...READ MORE

Oct 20, 2020 in Java-Script by Niroj
 • 82,880 points • 2,064 views
0 votes
1 answer

Error:Request header field X-Requested-With is not allowed by Access-Control-Allow-Headers

Hello @kartik, Access-Control-Allow-Headers does not allow * as accepted value. Instead of ...READ MORE

Jul 6, 2020 in Java-Script by Niroj
 • 82,880 points • 2,038 views
0 votes
1 answer

How to access GET directly from JavaScript?

Hello @kartik, You can first go through: window.location.search It will ...READ MORE

Apr 29, 2020 in Java-Script by Niroj
 • 82,880 points • 2,034 views
0 votes
1 answer

How to do API call in react js?

Hello, Use fetch method inside componentDidMount to update state: componentDidMount(){ fetch('https://dey.me/api/') ...READ MORE

May 18, 2020 in Java-Script by Niroj
 • 82,880 points • 1,948 views
0 votes
1 answer

How to remove all child elements of a DOM node in JavaScript?

Hello @kartik, Use modern Javascript, with remove! const parent = ...READ MORE

Sep 21, 2020 in Java-Script by Niroj
 • 82,880 points • 1,900 views
0 votes
1 answer

How can I determine the type of an HTML element in JavaScript?

Hello @kartik, nodeName is the attribute you are looking ...READ MORE

Oct 8, 2020 in Java-Script by Niroj
 • 82,880 points • 1,898 views
0 votes
1 answer

How to set outerHTML with jQuery?

hello @kartik, This is innterHTML because it's inside ...READ MORE

Apr 27, 2020 in Java-Script by Niroj
 • 82,880 points • 1,889 views
0 votes
1 answer

Error:“Access is denied” error on accessing iframe document object

Hii @kartik, The problem was that even though the ...READ MORE

Jun 19, 2020 in Java-Script by Niroj
 • 82,880 points • 1,888 views
0 votes
1 answer

How can I check whether a radio button is selected with JavaScript?

Hello @kartik, You can use vanilla JavaScript way var radios ...READ MORE

Sep 3, 2020 in Java-Script by Niroj
 • 82,880 points • 1,861 views
0 votes
1 answer

How to get browser width using JavaScript code?

Hello @kartik, Use this code: var w = window.innerWidth; var ...READ MORE

Oct 9, 2020 in Java-Script by Niroj
 • 82,880 points • 1,856 views
0 votes
1 answer

How do I use format() on a moment.js duration?

Hello @kartik, Use this: // set up let start = ...READ MORE

Oct 7, 2020 in Java-Script by Niroj
 • 82,880 points • 1,835 views
0 votes
1 answer

How to disable postback on an asp Button in System.Web.UI.WebControls.Button?

Hello @kartik, Use this: <asp:button runat="server".... OnClientClick="myfunction(); return false;" ...READ MORE

Sep 9, 2020 in Java-Script by Niroj
 • 82,880 points • 1,834 views
0 votes
1 answer

How to reject in async/await syntax?

Hello @kartik,  throw an Error wrapping the value, which results in ...READ MORE

Sep 23, 2020 in Java-Script by Niroj
 • 82,880 points • 1,817 views
0 votes
1 answer

How to uncheck a radio button?

Hello @kartik, either (plain js) this.checked = false; or (jQuery) $(this).prop('checked', ...READ MORE

Sep 18, 2020 in Java-Script by Niroj
 • 82,880 points • 1,741 views
0 votes
2 answers

How to animate a change in backgroundColor using jQuery on mouseover?

You don't need jquery. You can also ...READ MORE

Sep 9, 2020 in Java-Script by Eureka
 • 160 points • 1,668 views
0 votes
1 answer

How do you access the matched groups in a JavaScript regular expression?

Hello, Here’s a method you can use to ...READ MORE

May 28, 2020 in Java-Script by Niroj
 • 82,880 points • 1,640 views
+1 vote
1 answer

How to Check synchronously if file/directory exists in Node.js?

Hello, You can use fs.existsSync(): const fs = require("fs"); // ...READ MORE

May 28, 2020 in Java-Script by Niroj
 • 82,880 points • 1,636 views
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