新的选择器
<script>
window.onload = function(){
var oDiv = document.querySelector('.box');
var aDiv = document.querySelectorAll('.box');
for(var i=0; i<aDiv.length; i++){
aDiv[i].style.background = "red";
}
};
</script>
<body>
<div id="div1" class="box" title="hello">div
</div>
<div class="box">div2
</div>
</body>
获取class列表属性
<script>
window.onload = function(){
var oDiv = document.getElementById('div1');
oDiv.classList.add('box4');
oDiv.classList.remove('box2');
oDiv.classList.toggle('box2');
};
</script>
</head>
<body>
<div id="div1" class="box1 box2 box3">div
</div>
</body>
JOSN新方法
<script>
var str = 'function show(){alert(123)}';
eval(str);
show();
var str = '{"name":"hello"}';
var json = JSON.parse(str);
alert( json.name );
var json = {name : "hello"};
var str = JSON.stringify(json);
alert( str );
</script>
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