Most answered questions in Java-Script

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How can I specify a local gem in my Gemfile?

Hello @kartik, In order to use local gem ...READ MORE

Jul 24, 2020 in Java-Script by Niroj
 • 82,880 points • 3,359 views
0 votes
1 answer

Error:installing mysql2: Failed to build gem native extension

Hello @kartik, In my case this helped: $ export ...READ MORE

Jul 24, 2020 in Java-Script by Niroj
 • 82,880 points • 7,432 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
 • 82,880 points • 832 views
0 votes
1 answer

How to “pretty” format JSON output in Ruby on Rails?

Hello @kartik, Use the pretty_generate() function, built into later versions ...READ MORE

Jul 24, 2020 in Java-Script by Niroj
 • 82,880 points • 10,535 views
0 votes
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
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 • 2,735 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
 • 82,880 points • 1,361 views
0 votes
1 answer

How to store input value into array then localstorage?

Hello @ abhittac, You have create the array everytime the ...READ MORE

Jul 24, 2020 in Java-Script by Niroj
 • 82,880 points • 8,717 views
0 votes
1 answer

How to show a different value from an input that what will be received as php?

Hello @kartik, You can't change the field's value ...READ MORE

Jul 8, 2020 in Java-Script by Niroj
 • 82,880 points • 10,045 views
0 votes
1 answer

How to get “value” of file upload input field in jquery?

Hello @kartik, Yes ,you can read the value ...READ MORE

Jul 8, 2020 in Java-Script by Niroj
 • 82,880 points • 12,123 views
0 votes
1 answer

Which is best window.location (JS) vs header() (PHP) for redirection?

Hello @kartik, It depends on how and when ...READ MORE

Jul 7, 2020 in Java-Script by Niroj
 • 82,880 points • 8,171 views
0 votes
1 answer

How to decode the url in php where url is encoded with encodeURIComponent()?

Hello @kartik, Use this function: <?php $string = 'http%3A%2F%2Fexample.com'; $output = ...READ MORE

Jul 7, 2020 in Java-Script by Niroj
 • 82,880 points • 3,933 views
0 votes
1 answer

How can I pass PHP objects to javascript?

Hello @kartik, You can convert the PHP object ...READ MORE

Jul 7, 2020 in Java-Script by Niroj
 • 82,880 points • 5,108 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
 • 82,880 points • 460 views
+1 vote
1 answer

How to assign Php variable value to Javascript variable?

Hello @kartik, Try: Essentially: <?php //somewhere set a value $var = "a ...READ MORE

Jul 7, 2020 in Java-Script by Niroj
 • 82,880 points • 10,419 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 • 2,352 views
0 votes
1 answer

How do I embed PHP code in JavaScript?

Hello @kartik, If you have individual .js files, and you ...READ MORE

Jul 7, 2020 in Java-Script by Niroj
 • 82,880 points • 7,910 views
0 votes
1 answer

How do I run PHP code when a user clicks on a link?

Hello @kartik, You'd need to have a javascript ...READ MORE

Jul 6, 2020 in Java-Script by Niroj
 • 82,880 points • 8,917 views
0 votes
1 answer

How to send JSON data from Javascript to PHP?

Hello @kartik, PHP has a built in function ...READ MORE

Jul 6, 2020 in Java-Script by Niroj
 • 82,880 points • 6,101 views
0 votes
1 answer

How can I call PHP functions by JavaScript?

Hello @kartik, You can do Ajax request to ...READ MORE

Jul 6, 2020 in Java-Script by Niroj
 • 82,880 points • 14,652 views
0 votes
1 answer

How to show progress bar while loading using ajax?

Hello @kartik, The first function calls an action ...READ MORE

Jul 6, 2020 in Java-Script by Niroj
 • 82,880 points • 19,244 views
0 votes
1 answer

How to access PHP var from external javascript file?

Hello @kartik, You don't really access it, you ...READ MORE

Jul 6, 2020 in Java-Script by Niroj
 • 82,880 points • 7,208 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

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 • 2,045 views
+1 vote
1 answer

How do I pass JavaScript variables to PHP?

Hello @kartik, You cannot pass variable values from ...READ MORE

Jul 6, 2020 in Java-Script by Niroj
 • 82,880 points • 18,931 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
 • 82,880 points • 1,566 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
 • 82,880 points • 688 views
0 votes
1 answer

How do I modify the URL without reloading the page?

Hii @kartik, HTML5 introduced the history.pushState() and history.replaceState() methods, which allow you ...READ MORE

Jun 20, 2020 in Java-Script by Niroj
 • 82,880 points • 5,076 views
0 votes
1 answer

How to render raw html with AngularJS?

Hello @kartik, You need to add ng-bind-html="data.text" to your h1 ...READ MORE

Jun 20, 2020 in Java-Script by Niroj
 • 82,880 points • 4,603 views
0 votes
1 answer

Error:Failed to load resource: net::ERR_FILE_NOT_FOUND loading json.js

Hii @kartik,  got the same error using: <link rel="stylesheet" ...READ MORE

Jun 19, 2020 in Java-Script by Niroj
 • 82,880 points • 19,631 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 • 2,437 views
0 votes
1 answer

How to convert HTML to JSON using PHP?

Hello @kartik, If you are able to obtain ...READ MORE

Jun 19, 2020 in Java-Script by Niroj
 • 82,880 points • 7,094 views
0 votes
1 answer

How to parse Excel file in Javascript/HTML5?

Hello @kartik, Below Function converts the Excel sheet ...READ MORE

Jun 19, 2020 in Java-Script by Niroj
 • 82,880 points • 13,798 views
0 votes
1 answer

Error:Chrome refuses to execute an AJAX script due to wrong MIME type

Hello @kartik, By adding a callback argument, you ...READ MORE

Jun 19, 2020 in Java-Script by Niroj
 • 82,880 points • 4,019 views
0 votes
1 answer

Error:jQuery.parseJSON throws “Invalid JSON” error due to escaped single quote in JSON

Hello @kartik, Striking a similar issue using CakePHP ...READ MORE

Jun 19, 2020 in Java-Script by Niroj
 • 82,880 points • 4,652 views
0 votes
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 • 2,974 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 • 1,890 views
0 votes
1 answer

How to open the newly created image in a new tab?

Hello @kartik, You can try something like: success: function ...READ MORE

Jun 19, 2020 in Java-Script by Niroj
 • 82,880 points • 8,970 views
0 votes
1 answer

How can I change the page URL without refreshing the page?

Hello @kartik, This is simple you just need change ...READ MORE

Jun 18, 2020 in Java-Script by Niroj
 • 82,880 points • 6,306 views
0 votes
1 answer

How to set cookie value with AJAX request?

Hello @kartik, Basically, ajax request as well as ...READ MORE

Jun 18, 2020 in Java-Script by Niroj
 • 82,880 points • 43,751 views
0 votes
1 answer

How to return AJAX response Text?

Hello @kartik, What you need to do is ...READ MORE

Jun 18, 2020 in Java-Script by Niroj
 • 82,880 points • 11,143 views
0 votes
1 answer

How to trigger jquery.ajax() error callback based on server response, not HTTP 500?

Hello @kartik, The error callback will be executed ...READ MORE

Jun 18, 2020 in Java-Script by Niroj
 • 82,880 points • 16,384 views
0 votes
1 answer

Uncaught TypeError: Cannot use 'in' operator to search for '324'

Hello @kartik, You have a JSON string, not ...READ MORE

Jun 18, 2020 in Java-Script by Niroj
 • 82,880 points • 8,262 views
0 votes
1 answer

How to catch net::ERR_CONNECTION_REFUSED?

Hello @kartik, You have access to online/offline in ...READ MORE

Jun 18, 2020 in Java-Script by Niroj
 • 82,880 points • 8,016 views
0 votes
1 answer

How to send data in request body with a GET when using jQuery $.ajax()?

Hello @kartik, Sending the data in your scenario,I ...READ MORE

Jun 18, 2020 in Java-Script by Niroj
 • 82,880 points • 18,170 views
0 votes
1 answer

How to Intercept call to the back button in my AJAX application?

Hello @kartik, It is very easy toi disable ...READ MORE

Jun 18, 2020 in Java-Script by Niroj
 • 82,880 points • 4,264 views
0 votes
1 answer

How to detect if URL has changed after hash in JavaScript?

Hello @kartik, Use this code window.onhashchange = function() { ...READ MORE

Jun 18, 2020 in Java-Script by Niroj
 • 82,880 points • 4,432 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
 • 82,880 points • 507 views
0 votes
1 answer

How can I remove or replace SVG content?

Hello @kartik, Setting the id attribute when appending ...READ MORE

Jun 18, 2020 in Java-Script by Niroj
 • 82,880 points • 5,775 views
0 votes
1 answer

How to Prevent browser caching of AJAX call result?

Hii, JQuery's $.get() will cache the results. Instead ...READ MORE

Jun 18, 2020 in Java-Script by Niroj
 • 82,880 points • 8,796 views
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