JavaScript类库D_javascript技巧

var D = {};

(function(){
//包装String
D.str = function(s){
if(! (this instanceof y.str))return new y.str(s);
this.val = (s!==undefined) ? s.toString() : "";
};
D.str.prototype = {
//删除字符串两边空白
trim : function(type){
var types = {0:"(^\\s+)|(\\s+$)",1:"^\\s+",2:"\\s+$"};
type = type || 0;
this.val = this.val.replace(new RegExp(types[type],"g"),"");
return this;
},
//重复字符串
repeat : function(n){
this.val = Array(n+1).join(this.val);
return this;
},
//字符串两边补白
padding : function(len,dire,str){
if(this.val.length>=len)return this;
dire = dire || 0; //[0代表左边，1代表右边]
str = str || " "; //默认为一个空白字符
var adder = [];
for(var i=0,l = len - this.val.length; iadder.push(str);
}
adder = adder.join("");
this.val = dire ? (this.val + adder) : (adder + this.val);
return this;
},
reverse : function(){
this.val = this.val.split("").reverse().join("");
return this;
},
byteLen : function(){
return this.val.replace(/[^\x00-\xff]/g,"--").length;
},
unBox : function(){
return this.val;
}
};
//alert(D.str(" 123 ").trim().repeat(2).padding(10,0,"x").reverse().unBox());
})();

(function(){
//包装Array
D.arr = function(arr){
if(!(this instanceof D.arr))return new D.arr(arr);
this.val = arr || [];
};
D.arr.prototype = {
each : function(fn){
for(var i=0,len=this.val.length;iif(fn.call(this.val[i])===false){
return this;
}
}
return this;
},
map : function(fn){
var copy = [];
for(var i=0,len = this.val.length;icopy.push(fn.call(this.val[i]));
}
this.val = copy;
return this;
},
filter : function(fn){
var copy = [];
for(var i=0,len=this.val.length;ifn.call(this.val[i]) && copy.push(this.val[i]);
}
this.val = copy;
return this;
},
remove : function(obj,fn){
fn = fn || function(m,n){
return m===n;
};
for(var i=0,len = this.val.length;iif(fn.call(this.val[i],obj)===true){
this.val.splice(i,1);
}
}
return this;
},
unique : function(){
var o = {},arr = [];
for(var i=0,len = this.val.length;ivar itm = this.val[i];
(!o[itm] || (o[itm]!==itm) )&& (arr.push(itm),o[itm] = itm);
}
this.val = arr;
return this;
},
indexOf : function(obj,start){
var len = this.val.length,start = ~~start;
start for(;startif(this.val[start]===obj)return start;
}
return -1;
},
lastIndexOf : function(obj,start){
var len = this.val.length,start = arguments.length === 2 ? ~~start : len-1;
start = start =len?(len-1):start);
for(;start>-1;start--){
if(this.val[start] === obj)return start;
}
return -1;
},
unBox : function(){
return this.val;
}
};
//alert( D.arr(["123",123]).unique().unBox());
//alert(D.arr([1,2,3]).map(function(i){return ++i;}).filter(function(i){return i>2;}).remove(3).unBox());
})();

(function(){
//包装Number
D.num = function(num){
if(!(this instanceof D.num))return new D.num(num);
this.val = Number(num) || 0;
};
D.num.prototype = {
padZore : function(len){
var val = this.val.toString();
if(val.length>=len)return this;
for(var i=0,l = len-val.length;ival = "0" + val;
}
return val;
},
floatRound : function(n){
n = n || 0;
var temp = Math.pow(10,n);
this.val = Math.round(this.val * temp)/temp;
return this;
},
unBox : function(){
return this.val;
}
};
//alert(D.num(3.1235888).floatRound(3).unBox());
})();

(function(){
//包装Date
D.date = function(date){
if(!(this instanceof D.date))return new D.date(date);
if(!(date instanceof Date)){
var d = new Date(date);
this.val = (d == "Invalid Date" || d == "NaN") ? new Date() : new Date(date);
}else{
this.val = date;
}
};
D.date.prototype = {
toStr : function(tpl){
var date = this.val,tpl = tpl || "yyyy-MM-dd hh:mm:ss";
var v = [date.getFullYear(),date.getMilliseconds(),date.getMonth()+1,date.getDate(),date.getHours(),date.getMinutes(),date.getSeconds()];
var k = "MM,M,dd,d,hh,h,mm,m,ss,s".split(",");
var kv = {"yyyy":v[0],"yy":v[0].toString().substring(2),"mmss":("000"+v[1]).slice(-4),"ms":v[1]};
for(var i=2;ikv[k[(i-2)*2]] = ("0" + v[i]).slice(-2);
kv[k[(i-2)*2+1]] = v[i];
}
for(var k in kv){
tpl = tpl.replace(new RegExp( k,"g"),kv[k]);
}
return tpl;
},
unBox : function(){
return this.val;
}
};
//alert(D.date("2017-123-12").toStr("yyyy-MM-dd hh:mm:ss ms-mmss"));
// alert(D.date("2017").unBox());
})();

(function(){
2 //包装Dom
3 D.dom = function(node){
4 if(!(this instanceof D.dom))return new D.dom(node);
5 if(typeof node === "undefined"){
6 node = document.body;
7 }else if(typeof node == "string"){
8 node = document.getElementById(node);
9 !node && (node = document.body);
}else{
!node.getElementById && (node = document.body);
}
this.val = node;
};
D.dom.prototype = {
inner : function(value){
this.val.innerHTML ? (value = value || "",this.val.innerHTML = value) : (value = value || 0,this.val.value = value);
return this;
},
attr : function(k,v){
if(typeof k == "object"){
for(var m in k){
this.val[m] = k[m];
}
}else{
this.val[k] = v;
}
return this;
},
css : function(k,v){
var style = this.val.style;
if(typeof k == "object"){
for(var m in k){
style[m] = k[m];
}
}else{
style[k] = v;
}
return this;
},
addClass : function(cls){
var clsName = " " + this.val.className + " ";
(clsName.indexOf(" " + cls + " ")==-1) && (clsName = (clsName + cls).replace(/^\s+/,""));
this.val.className = clsName;
return this;
},
removeClass : function(cls){
var clsName = " " + this.val.className + " ";
this.val.className = clsName.replace(new RegExp(" "+cls+ " ","g"),"").replace(/(^\s+)|(\s+$)/,"");
return this;
},
addEvent : function(evType,fn){
var that = this, typeEvent = this.val["on"+evType];
if(!typeEvent){
(this.val["on"+evType] = function(){
var fnQueue = arguments.callee.funcs;
for(var i=0;ifnQueue[i].call(that.val);
}
}).funcs =[fn];
}else{
typeEvent.funcs.push(fn);
}
return this;
},
delEvent : function(evType,fn){
if(fn===undefined){
this.val["on"+evType] = null;
}else{
var fnQueue = this.val["on"+evType].funcs;
for(var i=fnQueue.length-1;i>-1;i--){
if(fnQueue[i] === fn){
fnQueue.splice(i,1);
break;
}
}
fnQueue.length==0 && (this.val["on"+evType] = null);
}
return this;
},
unBox : function(){
return this.val;
}
};
//静态方法
var __ = D.dom;
__.$ = function(id){
return typeof id == "string" ? document.getElementById(id) : id;
};
__.$$ = function(tag,box){
return (box===undefined?document:box).getElementsByTagName(tag);
};
__.$cls = function(cls,tag,node){
node = node === undefined ? document : node;
cls = cls.replace(/(\.)|(^\s+)|(\s+$)/g,"");
if(node.getElementsByClassName)return node.getElementsByClassName(cls);
tag = tag === undefined ? "*" : tag;
var filter = [], nodes = (tag==="*" && node.all) ? node.all : node.getElementsByTagName(tag);
for(var i=0,j=nodes.length;inodes[i].nodeType==1 && ((" " + nodes[i].className + " ").indexOf(" "+cls+ " ")!=-1) && filter.push(nodes[i]);
}
return filter;
};
//静态方法结束
alert(D.dom.$cls(".abc").length);
})();