Trending questions in Java-Script

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How do I test for an empty JavaScript object?

Hello @kartik, Try this: var obj = {}; return Object.keys(obj).length; Hope ...READ MORE

Aug 28, 2020 in Java-Script by Niroj
 • 82,800 points • 1,062 views
0 votes
1 answer

How can I display a JavaScript object?

Hello @kartik, Use native JSON.stringify method. Works with nested objects ...READ MORE

Aug 28, 2020 in Java-Script by Niroj
 • 82,800 points • 1,033 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
 • 82,800 points • 3,264 views
+1 vote
1 answer

How to get error status code of http get NodeJS?

Hello @kartik, An error code 400 response is ...READ MORE

Jun 2, 2020 in Java-Script by Niroj
 • 82,800 points • 4,640 views
0 votes
1 answer

Error:bundle install fails with SSL certificate verification error

Hello @kartik, Replace the ssl gem source with ...READ MORE

Jul 25, 2020 in Java-Script by Niroj
 • 82,800 points • 2,414 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
 • 82,800 points • 3,126 views
0 votes
1 answer

How can I get query string values in JavaScript?

Hello @kartik, You don't need jQuery for that ...READ MORE

Jul 27, 2020 in Java-Script by Niroj
 • 82,800 points • 2,168 views
0 votes
1 answer

How to run multiple npm scripts in parallel?

You should use npm-run-all (or concurrently, parallelshell), because it has more ...READ MORE

Apr 24, 2020 in Java-Script by Niroj
 • 82,800 points • 6,194 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
 • 82,800 points • 2,991 views
0 votes
1 answer

Cannot install NodeJs: /usr/bin/env: node: No such file or directory

Hii, If you already have nodejs installed (check ...READ MORE

May 5, 2020 in Java-Script by Niroj
 • 82,800 points • 5,594 views
0 votes
1 answer

How can I rename a database column in a Ruby on Rails migration?

Hello @kartik, Try using this: rename_column :table, :old_column, :new_column You'll ...READ MORE

Jul 24, 2020 in Java-Script by Niroj
 • 82,800 points • 2,142 views
0 votes
1 answer

How to validate an email address in JavaScript

Hello @kartik, To validate email use the below ...READ MORE

Jul 27, 2020 in Java-Script by Niroj
 • 82,800 points • 2,003 views
0 votes
1 answer

Jest SecurityError: localStorage is not available for opaque origins

Hello kartik, You must specify what environment (--env) ...READ MORE

Apr 24, 2020 in Java-Script by Niroj
 • 82,800 points • 6,031 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
 • 82,800 points • 3,542 views
0 votes
1 answer

How do I pass variables and data from PHP to JavaScript?

Hello @kartik, Simply use one of the following ...READ MORE

Jul 6, 2020 in Java-Script by Niroj
 • 82,800 points • 2,701 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
 • 82,800 points • 3,237 views
0 votes
1 answer

How do I add arbitrary html attributes to input fields on a form?

Hello @kartik, If you are using ModelForm, apart from ...READ MORE

Jul 27, 2020 in Java-Script by Niroj
 • 82,800 points • 1,563 views
0 votes
1 answer

How to drop columns using Rails migration?

Hello @kartik, Use this: remove_column :table_name, :column_name For instance: remove_column :users, ...READ MORE

Jul 24, 2020 in Java-Script by Niroj
 • 82,800 points • 1,587 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
 • 82,800 points • 3,446 views
0 votes
1 answer

jQuery AJAX fires error callback on window unload - how do I filter out unload and only catch real errors?

Hello, In the error callback or $.ajax you have three ...READ MORE

Apr 27, 2020 in Java-Script by Niroj
 • 82,800 points • 5,366 views
0 votes
1 answer

How do I include a JavaScript file in another JavaScript file?

Hello @kartik, It is possible to dynamically generate ...READ MORE

Jul 27, 2020 in Java-Script by Niroj
 • 82,800 points • 1,423 views
0 votes
1 answer

How do I remove a property from a JavaScript object?

Hello @kartik, The delete operator is used to remove properties ...READ MORE

Jul 27, 2020 in Java-Script by Niroj
 • 82,800 points • 1,413 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
 • 82,800 points • 3,485 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
 • 82,800 points • 3,344 views
0 votes
1 answer

How do you get a timestamp in JavaScript?

Hello @kartik,  Use this: +new Date I also like this, ...READ MORE

Jul 27, 2020 in Java-Script by Niroj
 • 82,800 points • 1,129 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
 • 82,800 points • 2,784 views
0 votes
1 answer

How do you insert a template into another template?

Hello @kartik, You can do: <div class="basic"> {% include "main/includes/subtemplate.html" ...READ MORE

Jul 28, 2020 in Java-Script by Niroj
 • 82,800 points • 1,094 views
0 votes
0 answers

How to access PHP session variables from jQuery function in a .js file?

How to access PHP session variables from ...READ MORE

Jul 7, 2020 in Java-Script by kartik
 • 37,520 points • 1,805 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
 • 82,800 points • 3,407 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
 • 82,800 points • 4,146 views
0 votes
1 answer

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
 • 82,800 points • 4,301 views
0 votes
1 answer

How can I get the user's local time instead of the server's time?

Hello @kartik, For client side, you would need ...READ MORE

Jul 7, 2020 in Java-Script by Niroj
 • 82,800 points • 1,162 views
0 votes
1 answer

Error: Use of const in strict mode

Hello, If this is happening in nodejs, it ...READ MORE

Apr 24, 2020 in Java-Script by Niroj
 • 82,800 points • 4,335 views
0 votes
1 answer

How do I remove a property from a JavaScript object?

Objects in JavaScript can be thought of ...READ MORE

Jun 8, 2020 in Java-Script by Niroj
 • 82,800 points • 2,137 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
 • 82,800 points • 2,586 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
 • 82,800 points • 2,537 views
0 votes
1 answer

How do I get PHP errors to display?

Hello @kartik, To display all errors you need ...READ MORE

Jun 20, 2020 in Java-Script by Niroj
 • 82,800 points • 1,542 views
0 votes
1 answer

Error:Callback of .animate() gets called twice jquery

Hiii @kartik, To get a single callback for ...READ MORE

Jun 2, 2020 in Java-Script by Niroj
 • 82,800 points • 2,294 views
0 votes
1 answer

How do I return the response from an asynchronous call?

Hello @kartik, You are using Ajax incorrectly. The ...READ MORE

Jun 17, 2020 in Java-Script by Niroj
 • 82,800 points • 1,618 views
0 votes
1 answer

How to do API call in react js?

Hello, Use fetch method inside componentDidMount to update state: componentDidMount(){ fetch('url') ...READ MORE

May 18, 2020 in Java-Script by Niroj
 • 82,800 points • 2,908 views
+1 vote
1 answer

How to implement up and down voting of a particular thread?

Hello @kartik, Yes, JavaScript is involved. There are ...READ MORE

Jun 3, 2020 in Java-Script by Niroj
 • 82,800 points • 2,103 views
0 votes
1 answer

How do I select an element with its name attribute in jQuery?

Hello @kartik, You can use: jQuery('[name="' + nameAttributeValue + ...READ MORE

Jun 11, 2020 in Java-Script by Niroj
 • 82,800 points • 1,721 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
 • 82,800 points • 3,737 views
0 votes
1 answer

How to list the properties of a JavaScript object?

Hii @kartik, Use Reflect.ownKeys(): var obj = {a: 1, b: ...READ MORE

Jun 8, 2020 in Java-Script by Niroj
 • 82,800 points • 1,788 views
0 votes
1 answer

How do I cancel an HTTP fetch() request?

Hello @kartik, If you have an in-flight response ...READ MORE

Jun 18, 2020 in Java-Script by Niroj
 • 82,800 points • 1,314 views
0 votes
1 answer

From php returning JSON to JavaScript

Hii @kartik, You can use Simple JSON for PHP. ...READ MORE

Jun 5, 2020 in Java-Script by Niroj
 • 82,800 points • 1,783 views
0 votes
1 answer

How do I check if an element is hidden in jQuery?

Hello @kartik,  You can use CSS: class .hide { ...READ MORE

Jun 8, 2020 in Java-Script by Niroj
 • 82,800 points • 1,606 views
0 votes
1 answer

How to customize the auth.User Admin page in Django CRUD?

Hello @kartik, Try this in admin.py file : from ...READ MORE

Jun 12, 2020 in Java-Script by Niroj
 • 82,800 points • 1,415 views
0 votes
1 answer

Error:$(document).ready equivalent without jQuery

Hello @kartik, Extends DOMContentLoaded so that it can ...READ MORE

Jun 8, 2020 in Java-Script by Niroj
 • 82,800 points • 1,518 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
 • 82,800 points • 3,188 views
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