New Document
function aa(){
var h = document.getElementsByTagName("h1");
for(var i=0;i h[i].onclick=function(){
//重置颜色
for(var k=0;k h[k].style.color="blue";
h[k].style.backgroundColor="red";
}
//设置当前的样式
this.style.color="red";
this.style.backgroundColor="blue";
}
}
}
*{padding:0px;margin:0px;}
h1{background-color:red;color:blue;cursor:pointer;width:200px;text-align:center}
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