The performance differences of option elements in each browser of javascript

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

Copy the codeThe code is as follows:

 
<select  multiple="multiple"> 
<option value="1" onclick="alert(1);">1</option> 
<option value="2" onclick="alert(2);">2</option> 
</select> 

Example:

2. Click option to obtain the event source target through srcElement. In IE, it is select, and Firefox/Safari/Chrome/Opera is option.

Copy the codeThe code is as follows:

 
<select  multiple="multiple"> 
<option value="1" >1</option> 
</select> 
<script> 
('s2').onclick = function(e){ 
var evt =  || e; 
var target =  || ; 
alert(); 
} 
</script> 

Example:

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

Copy the codeThe code is as follows:

 
<select  multiple="multiple"> 
<option value="1" title="tips">1</option> 
</select> 

Example: