JS 功能函数



//************************************* 
//读取Url中参数的函数 
//*************************************
function getUrlParameter(seekParameter) {
    var url = location.href;
    var parameters = url.substr(url.indexOf("?") + 1);
    var parameterItems = parameters.split("&");
    var parameterName;
    var parameterVar = "";
    for (i in parameterItems) {
        parameterName = parameterItems[i].split("=")[0];
        parameterVar = parameterItems[i].split("=")[1];
        if (parameterName == seekParameter) {
            return (parameterVar);
        }
    }
    return "";
}
//************************************* 
//修改Url中参数的函数 
//*************************************
function setUrlParam(url, param, v) {
    var re = new RegExp("(\\\?|&)" + param + "=([^&]+)(&|$)", "i");
    var m = url.match(re);
    if (m) {
        return (url.replace(re, function ($0, $1, $2) { return ($0.replace($2, v)); }));
    }
    else {
        if (url.indexOf('?') == -1)
            return (url + '?' + param + '=' + v);
        else
            return (url + '&' + param + '=' + v);
    }
}

1、返回无重复的新数组（就是原数组删除重复的元素）
<script type="text/javascript">
    Array.prototype.strip = function(){
        if(this.length < 2) [this[0]]||[];
        var arr = [];
        for(var i = 0;i < this.length;i ++){
            arr.push(this.splice(i--,1));
            for(var j=0;j<this.length;j++){
                if(this[j] == arr[arr.length-1]){
                    this.splice(j--,1);
                }
            }
        }
        return arr;
    }
    var arr=["123a",85,4,,54,"123a",85,8,8,1,2,5,4,7,8,54,"44"];
    alert(arr.strip());
</script>
2、返回被删元素组成的新数组
<script type="text/javascript">
    Array.prototype.strip=function(){
        if(this.length<2) return [];
        var arr=[];
        var del=[];
        for(var i=0;i<this.length;i++){
            arr.push(this.splice(i--,1));
            for(var j=0;j<this.length;j++){
                if(this[j]==arr[arr.length-1]){
                    del.push(this.splice(j--,1));
                }
            }
        }
        return del;
    }
    var arr=["123a",85,4,,54,"123a",85,8,8,1,2,5,4,7,8,54,"44"];
    alert(arr.strip());
</script>