有用的函数集（持续更新）

(function() {    function now() {        return new Date().getTime();    }    function today(format) {        return someday(0, format);    }    function getDate(APIname,delta,format){        var date = new Date();        date["set"+APIname].call(date,date["get"+APIname] + delta);        var arr = [date.getFullYear(), date.getMonth() + 1, date.getDate()];        return arr.join(format ? format : "/");    }    function someday(delta, format) {        return getDate("Date",delta,format);    }    function someMonth(delta, format) {        return getDate("Month",delta,format);    }    function someYear(delta, format) {        return getDate("FullYear",delta,format);    }    function random(from, to, onlyInt) {        var digit = from + Math.random() * (to - from);        onlyInt && (digit = digit.toFixed(0));        return digit;    }    function deleteTag(str){        return str.replace(/<\/?[\s\S]*?>/,"");    }    function Drawselect(data,config){        var selectTpl="<select id='@id' class='@class'>@content</select>";        var optionTpl="<option value='@value'>@name</option>";        var index=0;        var returnStr="";        var len=data.length;        while(index<len){            returnStr+=optionTpl.replace(/@value/,data[index]).replace(/@name/,data[index]);            index++;        }        config && (returnStr=selectTpl.replace(/@id/,config.id ? config.id : "").replace(/@class/,config.class ? config.class : "").replace(/@content/,returnStr));        return returnStr;    }    function  factorial(num){        num=Number.isInteger(num)?num:Math.floor(num)        if ( num == 1 ) {            return 1         }        var value=num*factorial(num-1);        if(value<=Number.MAX_VALUE)        {            return value;        }        else{            console.log(num)            throw new Error("value error")        }    }    function transferChar(char){        if(char.charCodeAt(0)>=65 && char.charCodeAt(0)<=90){            return char.toLowerCase()        }        else if(char.charCodeAt(0)>=90 && char.charCodeAt(0)<=122){            return char.toUpperCase();        }    }    function splitWord(str){        if(Object.prototype.toString.call(str)!="[object String]"){            return;        }        str=str.replace(/^\s*/,"").replace(/\s*$/,"");        var result=[]        var index=0;        var state=0;        var len=str.length;        for(var i=0;i<len;i++){            result[index] || (result[index]='');            if(!/\s/.test(str[i])){            result[index]+=str[i];//transferChar(str[i]);            state=0;            continue;            }            if(state==0){                index++;            }            state=1        }        return result;//.reverse();    }    var cache={}    function sort(tree,parent){        parent===undefined && (parent=0);        $.each(tree,function(index,value){            cache[value.id]=value;            cache[value.id].parent=parent;            sort(value.children?value.children:[],value.id);            //value.children=[]        })    }    function range(start,stop,step){    !step && (step=1);    var result=[start];    while(start+step<stop){      start=start+step      result.push(start)    }    return result;  }  /*  var result=[]  function flat(arr){    $(arr).each(function(index,value){      if(Object.prototype.toString.call(value)=="[object Array]"){        flat(value);      }      else{        result.push(value);      }    })    return result;  }  */  function curring(fn){var  argList=Array.prototype.slice.call(arguments,1);return function(){if(arguments.length==0){fn(argList)//fn.apply({},argList)//fn(argList)也可以，但传入的函数需要有一个参数接受argList变量}else{argList=argList.concat([].slice.call(arguments));return arguments.callee}}}    function uncurring() {        return Function.prototype.call.bind(arguments[0])    }    function splitMultipleStr(argFun) {        var script ;        cache['script'] ? (script = cache['script']) : (script = cache['script'] = document.createElement('script'));        script.type = 'text/cyb';        script.text = argFun.toString().replace(/(\/\*|\*\/)/g,'').        replace(/function \(\)\{([\s\S]*?)\}/,'$1').replace(/^\s*/,'').replace(/\s*$/,'');        script.id = 'myScript';        document.body.appendChild(script);        var myDom = document.getElementById('myScript');        var result = splitWord(myDom.innerHTML);        return result;    }    function getLeaf(tree,result,key){        for(var i = 0;i<tree.length;i++){            if(tree[i].children){                getLeaf(tree[i].children,result,key)            }            else{                result[result.length] = key ? tree[i][key] : tree[i];            }        }    }    this.ZYM = {        now: now,        someday: someday,        someMonth:someMonth,        someYear:someYear,        today: today,        random: random,        deleteTag:deleteTag,        Drawselect:Drawselect,        factorial:factorial,        transferChar:transferChar,        splitWord:splitWord,        sort:sort,        cache:cache,        range:range,        curring:curring,        uncurring:uncurring,        splitMultipleStr:splitMultipleStr,        getLeaf:getLeaf    };}).call(this)