Is there a web site that allows to edit a simple HTML fragment, insert jQuery code, and verify if the jQuery code has the desired effect?
You can just type window. jQuery in Console . If it return a function(e,n) ... Then it is confirmed that the jquery is loaded and working successfully.
on if not a function" jQuery error occurs for 2 main reasons: Loading an old version of the jQuery library that doesn't support the on function. Loading a library that overrides the value of the dollar sign $ variable.
You may experience the “jQuery is not defined error” when jQuery is included but not loaded. Make sure that it's loaded by finding the script source and pasting the URL in a new browser or tab. The snippet of text you should look for to find the URL to test.
Check out http://www.jsbin.com. Make sure you select jQuery from the "Include:" dropdown.
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