Latest questions in Java-Script

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How can I determine if a variable is 'undefined' or 'null'?

Hello @kartik, You can use the qualities of ...READ MORE

Aug 28, 2020 in Java-Script by Niroj
 • 82,800 points • 819 views
0 votes
1 answer

How to get the current URL with JavaScript?

Hello @kartik, Use: window.location.href As noted in the comments, ...READ MORE

Aug 28, 2020 in Java-Script by Niroj
 • 82,800 points • 1,571 views
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1 answer

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 • 756 views
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1 answer

How do I copy to the clipboard in JavaScript?

Hello @kartik, To copy HTML , you can ...READ MORE

Aug 28, 2020 in Java-Script by Niroj
 • 82,800 points • 1,093 views
0 votes
1 answer

How to set “checked” for a checkbox with jQuery?

Hello @kartik, Use: $(".myCheckbox").attr('checked', true); // Deprecated $(".myCheckbox").prop('checked', true); And if ...READ MORE

Aug 28, 2020 in Java-Script by Niroj
 • 82,800 points • 6,527 views
0 votes
1 answer

How to replace all occurrences of a string?

Hello @kartik, As an alternative to regular expressions ...READ MORE

Aug 28, 2020 in Java-Script by Niroj
 • 82,800 points • 1,027 views
0 votes
1 answer

How to open a URL in a new Tab using JavaScript or jQuery?

Hello @kartik, Use window.open(): var win = window.open('http://edureka.co/', '_blank'); if (win) ...READ MORE

Aug 25, 2020 in Java-Script by Niroj
 • 82,800 points • 6,733 views
0 votes
1 answer

How to disable div in html?

Hello @kartik, A simple way to disable any ...READ MORE

Aug 25, 2020 in Java-Script by Niroj
 • 82,800 points • 22,660 views
0 votes
1 answer

How to change an element's ID with jQuery?

Hello @kartik, Your syntax is incorrect, you should ...READ MORE

Aug 25, 2020 in Java-Script by Niroj
 • 82,800 points • 4,193 views
0 votes
1 answer

How jQuery event to trigger action when a div is made visible?

Hello @kartik, You could always add to the ...READ MORE

Aug 25, 2020 in Java-Script by Niroj
 • 82,800 points • 11,157 views
0 votes
1 answer

How to add a custom HTTP header to ajax request with javascript?

Hello @kartik, There is different way based on ...READ MORE

Aug 25, 2020 in Java-Script by Niroj
 • 82,800 points • 108,695 views
0 votes
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
 • 82,800 points • 4,654 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
 • 82,800 points • 4,134 views
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1 answer

How to load local JSON file?

Hello @kartik, $.getJSON is asynchronous so you should do: $.getJSON("test.json", ...READ MORE

Aug 25, 2020 in Java-Script by Niroj
 • 82,800 points • 5,308 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
 • 82,800 points • 2,869 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
 • 82,800 points • 3,481 views
0 votes
1 answer

How can i insert data in relation table using model?

Hello @Alisha, Try to work using the model ...READ MORE

Aug 24, 2020 in Java-Script by Niroj
 • 82,800 points • 1,670 views
0 votes
1 answer

How to add affiliate links automatically to blog post using javascript?

Hello @ Okugbe ,  You need few lines of code, ...READ MORE

Aug 10, 2020 in Java-Script by Niroj
 • 82,800 points • 1,656 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 • 791 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 • 1,217 views
0 votes
1 answer

How do I POST urlencoded form data with $http without jQuery?

Hello @kartik,  I think you need to do ...READ MORE

Jul 27, 2020 in Java-Script by Niroj
 • 82,800 points • 13,377 views
0 votes
1 answer

How to get the jQuery $.ajax error response text?

Hello @kartik, Try: error: function(xhr, status, error) { ...READ MORE

Jul 27, 2020 in Java-Script by Niroj
 • 82,800 points • 32,733 views
0 votes
1 answer

How do I send a cross-domain POST request via JavaScript?

Hello @kartik, Follow this steps: Create an iFrame, put a ...READ MORE

Jul 27, 2020 in Java-Script by Niroj
 • 82,800 points • 2,120 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 • 1,610 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 • 823 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 • 1,487 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 • 1,057 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 • 1,071 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 • 2,073 views
0 votes
1 answer

How do I parse JSON with Ruby on Rails?

Hello @kartik, Use  hash = JSON.parse string Rails should automagically ...READ MORE

Jul 25, 2020 in Java-Script by Niroj
 • 82,800 points • 4,737 views
0 votes
1 answer

How to convert a ruby hash object to JSON?

Hello @kartik, You can also use JSON.generate: require 'json' JSON.generate({ foo: ...READ MORE

Jul 24, 2020 in Java-Script by Niroj
 • 82,800 points • 13,231 views
0 votes
1 answer

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
 • 82,800 points • 3,900 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
 • 82,800 points • 8,188 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 • 1,261 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
 • 82,800 points • 12,683 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
 • 82,800 points • 3,658 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
 • 82,800 points • 3,346 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 • 1,775 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
 • 82,800 points • 9,421 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
 • 82,800 points • 11,872 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
 • 82,800 points • 13,444 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
 • 82,800 points • 9,185 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
 • 82,800 points • 4,705 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 • 1,410 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
 • 82,800 points • 6,092 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 • 832 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
 • 82,800 points • 11,092 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 • 2,848 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
 • 82,800 points • 9,137 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
 • 82,800 points • 11,006 views
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