圣杯布局

<div class="container">
    <div class="main"></div>
    <div class="left"></div>
    <div class="right"></div>
</div>

.container{padding-left:200px; padding-right:200px}
.left,.right{position:relative; width:200px; height:100%}
.left{float:left; left:-200px; margin-left:-100%; }
.right{float:right; right:-200px; margin-left:-200px;}

双飞翼布局

<div class="container">
    <div class="main">
        <div class="inner">inner</div>
    </div>
    <div class="left"></div>
    <div class="right"></div>
</div>

.container>div{float:left; height:100%}
.main{width:100%; float:left;}
.inner{margin-left:200px; margin-right:200px}
.left{margin-left:-200px; width:200px;}
.right{margin-left:-200px; width:200px}

浮动布局

<div class="container">
    <div class="left"></div>
    <div class="right"></div>
    <div class="main"></div>
</div>

.container>div{height:100%}
.left{float:left; width:200px}
.right{float:right; width:200px}
.main{margin-left:200px; margin-right:200px}

数组去重

function unique(array) {
    var res = array.filter(function(item, index, arr){
        return arr.indexOf(item) === index;
    })
    return res;
}

获取url参数

function getParam(url){
    url = url == null?window.location.url:url;
    var search = url.substring(url.lastIndexOf("?")+1);
    if(!search){return{}}
    return JSON.parse(
    '{"') + decodeURIComponent(search).replace(/"/g,'\\"').replace(/&/g,'","').replace(/=/g,'":"')+'"}'
}

深拷贝

function deepClone(target){
    if(typeof target === 'object'){
        let cloneTarget = Array.isArray(target)?[]:{};
        for( const key in target) {
            cloneTarget[key] = deepClone(target[key])
        }
        return cloneTarget
    } else {
        return target 
    }
}