Home > Developer > JavaScript
The event object is used to describe events that occur in a browser window, and an event object is generated as soon as events occur.
Although all event properties can be accessed through the event object, some properties may not be meaningful in some events. such as the Fromelement and Toelement properties are only meaningful when dealing with onmouseover and onmouseout events.
Also, be aware of the differences between the event objects in different browsers. In low-version ie, if a function is called by an event, it can access the event object through Window.event, but other browsers pass the event object to the events handler as an argument to the event handler function. Therefore, to achieve browser compatibility, the event object must be passed to the function with parameters when defining the event trigger.
The implementation of browser-compatible event handling code is as follows:
1 <div id= "mydiv" onclick= "javascript:handleevent (event);" ></div>2 <script type= "Text/javascript" >3 function handleevent ( EVT) {4 var myevent = window.event? window.event:evt; 5 }; 6 </script>The code above will determine if the Window.event property exists, and if so, use window.event, or use the parameter evt passed over.
The following instances can get the coordinates of the mouse and are compatible across browsers:
1<body onmousemove= "Javascript:canmove" (event); id= "Bodyid" >2<div id= "mydiv" style= "position:relative; width:1000px; height:700px; " >3 Move Mouse4</div>5 6<script type= "Text/javascript" >7 varx, y;8 varOdiv = document.getElementById (' mydiv '));9 functionCanmove (evt) {Ten varMyEvent = window.event?window.event:evt; Onex = Document.body.scrollLeft +Myevent.clientx; Ay = Document.body.scrollTop +Myevent.clienty; -Odiv.innertext = ' x= ' + X + ' px; ' + ' y= ' + Y + ' px '; - } the</script> -</body>
JavaScript gets mouse coordinates
Start building with 50+ products and up to 12 months usage for Elastic Compute Service
1 on 1 presale consultation
24/7 Technical Support 6 Free Tickets per Quarter Faster Response
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.
A comprehensive suite of global cloud computing services to power your business
Payment Methods We Support
