Im trying for a json code in a VIEW .cshtml file but it is giving '$ is undefined '

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C#

MVC4

Im trying to call a csharp method using JSON,but my json coding is running VIEW without button click

Posted 9-Dec-13 0:17am

ahmed ali mohd

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2 solutions

Solution 2

Your JavaScript file is not being properly loaded into your page
You have a botched version of jQuery. This could happen because someone edited the core file, or a plugin may have overwritten the $ variable.
You have JavaScript running before the page is fully loaded, and as such, before jQuery is fully loaded.
You should check the Firebug net panel to see if the file is actually being loaded properly. If not, it will be highlighted red and will say "404" beside it. If the file is loading properly, that means that the issue is number 2.

Make sure all javascript code is being run inside a code block such as:

$(document).ready(function () {
//your code here
});
This will ensure that your code is being loaded after jQuery has been initialized.

Posted 9-Dec-13 0:26am

Blesson Mathew

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sankarsan parida · Accepted Answer · 2013-12-09T00:23:00

You have to put the JQuery reference first, at the top of the page. Browsers load script tags synchronously, so if you try to reference JQuery's $ before loading the JQuery source, then you'll get an "undefined" error.

Actually, since script tags block the rest of the page from loading, it might be better to instead put your other script tags at the bottom, underneath the JQuery reference. This allows the browser to load and display your page markup first, before loading the scripts.
http://stackoverflow.com/questions/17163422/jquery-not-defined-mvc4[^]