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When writing a new jQuery plugin is there a straightforward way of checking that the current version of jQuery is above a certain number? Displaying a warning or logging an error otherwise.
It would be nice to do something like:
jQuery.version >= 1.2.6 in some form or another.
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Type this command in the Chrome Developer Tools Javascript console window to see what version of the jQuery is being used on this page: console. log(jQuery(). jquery);
Hence, we have used the $(document). ready() function before we can check if the plugin was loaded successfully or not. The typeof operator returns the data type of its operand in the form of a string. In this case, the operand is the jQuery $ operator itself.
You can test if jQuery is loaded by opening your javascript console (in Chrome: Settings > More tools > Javascript console). Where the little blue arrow appears type: if(jQuery) alert('jQuery is loaded'); Press enter.
fn is an alias for jQuery. prototype which allows you to extend jQuery with your own functions. For Example: $.fn. something = function{}
Here is a check I used to make sure the user was using at least v. 1.3.2 of jQuery.
if (/1\.(0|1|2|3)\.(0|1)/.test($.fn.jquery) || /^1.1/.test($.fn.jquery) || /^1.2/.test($.fn.jquery)) { //Tell user they need to upgrade. } Try this:
>>> jQuery.fn.jquery; "1.3.2" If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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