js 复选框隔行变色 每一行颜色不一样 

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
    <meta charset="utf-8">
    <title>Title</title>
</head>
<body>
<style>
    *{margin:0;padding:0;}
    li{list-style:none;height:30px;margin-bottom:1px;line-height:30px;}
    ul input{margin:0 10px;}
</style>
<script>
    window.onload=function() {
        var oUl = document.getElementsByTagName('ul')[0];
        var oLi = oUl.getElementsByTagName('li');
        var oChe = oUl.getElementsByTagName('input');
        var oBut1=document.getElementById('but1');
        var oBut2=document.getElementById('but2');
        var str='';

        oBut1.onclick=function(){
            for(var i=0;i<oChe.length;i++) {
               oChe[i].checked=!oChe[i].checked
            }
        };
        oBut2.onclick=function(){
            for(var i=0;i<oChe.length;i++){
                if(oChe[i].checked==false){
                    oChe[i].checked=true;
                }
            }
        };
        for(var i=0;i<oLi.length;i++){
            var arr1=['yellow','red','blue'];
            oLi[i].style.background=arr1[i%arr1.length];
            oLi[i].index=i;
            oLi[i].onmouseover=function(){
                 //str=this.style.background;
                  this.style.background='gray';
            };
            oLi[i].onmouseout=function(){
                this.style.background=arr1[this.index%arr1.length];
            };
           /* for(var j=0;j<oChe.length;j++){
                oChe[j].onclick=function(){
                    if(oChe[oLi[i].index].checked=true){
                        oLi[oLi[i].index].style.background='#000';
                    }
                }

                }*/

        }


    }

</script>
<input type="button" value="反选" id="but1">
<input type="button" value="全选" id="but2">
<ul>
    <li><input type="checkbox"><span>月亮之上</span></li>
    <li><input type="checkbox"><span>当你老了</span></li>
    <li><input type="checkbox"><span>时间都去哪儿了</span></li>
    <li><input type="checkbox"><span>海阔天空</span></li>
    <li><input type="checkbox"><span>光辉岁月</span></li>
</ul>
</body>
</html>

posted on 2021-10-26 22:17  完美前端  阅读(197)  评论(0)    收藏  举报

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