使用javascript更改html中奇数/偶数DIV的颜色

Question

For example we 5 DIVs:

<div id="container" >
  <div class="child">1</div>
  <div class="child">2</div>
  <div class="child">3</div>
  <div class="child">4</div>
  <div class="child">5</div>
</div>

How can I change the background color of even DIVs?

Answer 1

CSS3 - not working in older browsers such as IE8

#container2 > div:nth-child(even){
  background: yellow;
}

jQuery which does work in IE8 too

$("#container > div:nth-child(even)").addClass("even");

I also found this discussion: IE8 and jQuery selectors

Here is a DEMO of CSS3 and jQuery both

 $("#container1 > div:nth-child(even)").addClass("even"); 

 .even { background-color: yellow } #container2>div:nth-child(even) { background: yellow; } 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script> jQuery: <div id="container1"> <div class="child">1</div> <div class="child">2</div> <div class="child">3</div> <div class="child">4</div> <div class="child">5</div> </div> <hr/> CSS3: <div id="container2"> <div class="child">1</div> <div class="child">2</div> <div class="child">3</div> <div class="child">4</div> <div class="child">5</div> </div> 

Answer 2

If you wanted a javascript option for some reason (maybe you're looking to do more than just a class?) you could use the each() function in jquery. Here is a functioning example to boot!

CSS

.redBox{
    background-color: #ff0000;
}​

Javascript

var i = 0;
$(".child").each(function(i){
    if(i%2===0){
        $(this).addClass("redBox");
    }
    i++;
});

Answer 3

try nth-child demo

div:nth-child(even){
background: yellow;
}

div{
 background: red;
}

Answer 4

用CSS做吧？

#container child:nth-child(even) {background: #CCC}

Answer 5

You can also use CSS3 nth-child selector. You can find samples on Here