How to load jQuery locally when CDN fails?



How to load jQuery locally when CDN fails?..

Answer / chaitanya

It is a good approach to always use CDN but sometimes what if the CDN is down (rare possibility though) but you never know in this world as anything can happen.

Below given jQuery code checks whether jQuery is loaded from Google CDN or not, if not then it references the jQuery.js file from your folder.

Hide Copy Code

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>

<script type="text/javascript">

if (typeof jQuery == 'undefined')

{

document.write(unescape("%3Cscript src='Scripts/jquery.1.9.1.min.js' type='text/javascript'%3E%3C/script%3E"));

}

</script>

It first loads the jQuery from Google CDN and then check the jQuery object. If jQuery is not loaded successfully then it will references the jQuery.js file from hard drive location. In this example, the jQuery.js is loaded from Scripts folder.

Is This Answer Correct ?    0 Yes 0 No

Post New Answer

More jQuery Interview Questions

Can we call C# code behind using jQuery?

0 Answers  


How to read cookies in jquery?

0 Answers  


What is the difference between text() and html() in jquery?

0 Answers  


Differentiate between jquery.size and jquery.length? : jQuery Mobile

0 Answers  


Explain various methods to make ajax request in jquery?

0 Answers  






How to delete cookies in jquery?

0 Answers  


What are features of jquery or what can be done using jquery?

0 Answers  


How do you implement animation functionality?

1 Answers  


Which program is useful for testing jQuery?

0 Answers  


What are your tools of choice to get the jquery job done?

0 Answers  


What is jquery toggle function?

0 Answers  


Is it too early to discuss jquery ui 1.8?

0 Answers  


Categories