2017/9/21

<script>

var div1 = document.getElementById(‘div1‘);
var div2 = document.getElementsByClassName(‘div2‘)[0];//取出数组
var div3 = document.getElementsByTagName()//标签选择器
var div4 = document.getElementsByName()//name选择器
alert(div1); //object HTMLDivElement
div1.innerHTML = "<b>加粗</b>"
div2.innerText = "<b>加粗</b>";
div1.style.color = "red";
div1.style.fontFamily = "华文彩云";
div1.setAttribute(‘class‘,‘class1‘)//设置
div1.removeAttribute(‘style‘);//移除
div1.onclick = function(){
alert("点击事件触发");
div1.setAttribute(‘class‘,‘class2‘);
var new_div = document.createElement(‘div‘);
改样式/改内容.....
new_div.innerHTML = "新元素";
document.body.appendChild(new_div);//增加
document.body.removeChild(new_div);//删除
</script>

2017/9/21

原文：http://www.cnblogs.com/buzhiheyan/p/7604583.html