jquery给div添加样式_百度经验1一c

1、jQuery设置css样式

<div style="background-color:#ffffffpadding-left:10px">测试jQuery动态获取padding-left</div>

2、用css()方法返回元素的样式属性

$("div").css("padding-left"))

3、用css()设置样式

$("div").css("color","yellow")

4、设置多个样式

$("div").css({"background-color":"yellow","font-size":"200%"})

var css = {

 background-color: '#EEE',

 height: '500px',

 margin: '10px',

 padding: '2px 5px'  }

$("div").css(css) 

添加CSS的方式有行内式、嵌入式、外链式、导入式

a)动态引入样式表文件：

function loadLink(url){

var link = document.createElement("link")

link.type = "text/css"

link.rel = "stylesheet"

link.href = url

var head = document.getElmentsByTagName("head")[0]

head.appendChild(link)

}

b)嵌入式：

function insertStyles(){

var doc,cssCode=[],cssText

var len = arguments.length

var head,style,firstStyle

if(len == 1){

doc = document

cssCode.push(arguments[0])

}else if(len == 2){

doc = arguments[0]

cssCode.push(arguments[1])

}else{

alert("函数最多接收两个参数！")

}

head = doc.getElementsByTagName("head")[0]

styles= head.getElementsByTagName("style")

if(styles.length == 0){

if(doc.createStyleSheet){//ie

doc.createStyleSheet()

}else{//FF

var tempStyle = doc.createElement("style")

tempStyle.setAttibute("type","text/css")

head.appendChild(tempStyle)

}

}

firstStyle = styles[0]

cssText=cssCode.join("\n")

if(!+"\v1"){//opacity兼容

var str = cssText.match(/opacity:(\d?\.\d+)/)

if(str!=null){

cssText = cssText.replace(str[0],"filter:alpha(opacity="+pareFloat(str[1])*100+")")

}

}

if(firstStyle.styleSheet){

firstStyle.styleSheee.cssText += cssText

}else if(doc.getBoxObjectFor){

firstStyle.innerHTML += cssText

}else{

firstStyle.appendChild(doc.createTextNode(cssText))

}

}

c)行内式：

var addStyle=function (ele,str){

var s = ele.getAttribute("style"),styles

if(str &&typeof str === "string"){

if(!s){

ele.style.cssText = str

}else{

if(s == '[object]'){//IE6/7 e.getAttribute("style")返回[object]

s=ele.style.cssText

}

styles= trim(s).split("")

for (var i=0,len=styles.lengthi<leni++){

var style_i=trim(styles[i])

var attr=style_i.split(":")[0]

if(str.indexOf(attr)>-1){

styles[i]=""

}else{

styles[i]=style_i

}

}

ele.style.cssText= styles.join("")+""+str

}

}

}

d)导入式：

import "index.css"

*** 作CSS 类相关的方法：

var hasClass=function(ele,value){

var rclass = /[\n\t\r]/g,

value=" "+value+" "

return (ele.nodeType==1)&&(" "+ele.className+" ").replace(rclass," ").indexOf(value)>-1

}

var trim=function (val){

return val.replace(/(^\s+)|(\s+$)/g,"")

}

var addClass=function(ele,value){

var rspace = /\s+/,classNames,getClass

if(value&&typeof value === "string"){

classNames = value.split(rspace)

if(ele.nodeType === 1){

if(!ele.className &&classNames.length == 1){

ele.className = value

}else{

getClass = " "+ele.className+" "

for(var i=0,len=classNames.lengthi<len i++){

var cname=classNames[i]

if(!hasClass(ele,cname)){

getClass += cname+" "

}

}

ele.className = trim(getClass)

}

}

}

}

var removeClass=function(ele,value){

var rclass = /[\n\t\r]/g,classNames,getClass

if((value&&typeof value === "string")||value === undefined){

classNames = (value||"").split(rspace)

if(ele.nodeType === 1 &&ele.className){

if(value){//存在查找要移除的类

getClass = " "+ele.className+" ".replace(rclass," ")//左右空格，为了使类中各类间均等，方便后面替换

for(var i=0,len=classNames.lengthi<leni++){

getClass = getClass.replace(" "+classNames[i]+" "," ")

}

ele.className=trim(getClass)

}else{//不存在移除所有类

ele.className = ""

}

}

}

}

var toggleClass=function(ele,value){

if(typeof value === "string"){

if(hasClass(ele,value)){

removeClass(ele,value)

}else{

addClass(ele,value)

}

}

}

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