<div id="box" class="box" title="abc" style="width:100px;height:100px;">123</div>

<script>

var oBox=document.getElementById('box');

//Attribute

console.log(oBox.getAttribute("title"))

console.log(oBox.getAttribute("style")) //width:100px;height:100px;字符串

oBox.setAttribute('name',"haha")

console.log(oBox.getAttribute("name"))

oBox.removeAttribute('name')

//直接oBox.name

console.log(oBox.title)

console.log(oBox.style.width)

//getComputedStyle().width / currentStyle.width 只能获取style属性里面的内容

if(typeof window.getComputedStyle==="function"){

console.log('1'+getComputedStyle(oBox).width)

}else{

console.log('2'+oBox.currentStyle.width)

}

</script>