Differences in performance of option elements in javascript browsers_form effects

1. There are no events (such as click, mouseover) in IE6/7/8/9, but there are in Firefox/Safari/Chrome/Opera.

Copy code The code is as follows:

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Example:

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2, click option, get the event source target through srcElement is select in IE , Firefox/Safari/Chrome/Opera are options.

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<script> <br>document.getElementById('s2').onclick = function(e){ <br>var evt = window.event || e; <br>var target = evt.srcElement || evt.target; <br>alert(target.tagName); <br>} <br> </script>

Example:

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3. Adding the title attribute to the option element to implement the tips function is invalid under IE6.

Copy code

The code is as follows:

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Example: 1