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i need jquery to work on a browser locally. how do i know if it is installed and how do i install it ?
my question is specific to being able to run this code:
onmouseover="evt.target.setAttribute('opacity', '0.5'); $('#someDiv').show();"
onmouseout="evt.target.setAttribute('opacity', '1'); $('#someDiv').hide();"
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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);
If you don't want to download and host jQuery yourself, you can include it from a CDN (Content Delivery Network).
JQuery is a JavaScript library. It would not have been invented had JavaScript was not there. jQuery is still dependent on JavaScript as it has to be converted to JavaScript for the browser in-built JavaScript engine to interpret and run it.
JQuery and JavaScript are actually the same. JQuery is a group of JavaScript libraries designed for DOM operations in HTML page such as animation, event handling, traversing and Ajax interactions. A strong hold on JavaScript is necessary to use either of the two scripting languages.
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.
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