<ul>
<li><strong>
list</strong>item
1 - one strong tag</li>
<li><strong>
list</strong>item<strong>
2</strong>- two <span>strong tags</span></li>
<li>
list item
3</li>
<li><strong>sd</strong><strong>df</strong></li>
</ul>
js代码:
$(
"li").click(
function(){
var $li = $(this),
isWithTwo =
$li.is(
function(){
return $(
'strong' , this).length ===
2;
});
if(isWithTwo){
$li.css(
"background-color" ,
"green");
}
else{
$li.css(
"background-color",
"#0000FF");
}
});
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