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22 lines
771 B
JavaScript
22 lines
771 B
JavaScript
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//add event listener for any element which calls a function
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//element can be provided as a direct reference or with just a string of the name
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function on(event, elementId, functionCallback) {
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//if element provided is string, get the actual element
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var element = (typeof elementId == 'string' ? document.getElementById(elementId) : elementId);
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//console.log('added '+event+' event listener on '+element)
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element.addEventListener(event,
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function (e) {
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// e = event
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//this = element clicked
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functionCallback(e, this);
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//if you need to access the event or this variable, you need to add them
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//when you define the callback, but you cant use the word this, eg:
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//on('click', menuButton, function (e, button) {});
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});
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}
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