我的Js模版引擎(三)

昨晚写的那个js模版引擎有不少bug,比如有些分隔符不支持,ie下有bug,并且还用了遭不少人唾弃的with,今晚又进行了一下改善,提高了分隔符的自由度,避开了with的使用,

修复了在ie下的bug(这个主要是由转义字符引起的bug,IE7下任然错误^_^),好了不多说了,直接看demo吧!

模版解析核心代码

 /**
 * @author hust_小C
 * email:hustcoolboy@gmail.com
 */
var dom = {
                    quote: function (str) {
                        str = str.replace(/[\x00-\x1f\\]/g, function (chr) {
                            var special = metaObject[chr];
                            return special ? special : '\\u' + ('0000' + chr.charCodeAt(0).toString(16)).slice(-4)
                        });
						return str.replace(/"/g, '\\"') ;
                     
                    }
                },
                metaObject = {
                    '\b': '\\b',
                    '\t': '\\t',
                    '\n': '\\n',
                    '\f': '\\f',
                    '\r': '\\r',
                    '\\': '\\\\'
                };
//上边的dom来自司徒正美
(function(w){
    w.Template=Template||{};
	function Template(options){
	    return this instanceof arguments.callee?this.init(options):new arguments.callee(options);
	}
	Template.prototype={
		init:function(options){
			this.tpl=options.tpl;//待解析的模版
			this.target=options.target||options.tpl;//解析后渲染的模板dom
		    this.tplcontent=dom.quote(options.tpl.text||options.tpl.value);
		    this.left=options.left||"{{";//左分隔符
			this.right=options.rigth||"}}";//右分隔符
			this.namespace=options.namespace||"data";//编译生成的函数,里边所用变量的环境,即模版中所用变量的执行环境
			this.body=[];
			this.compiled="";//编译生成的函数
			this.data=options.data;
		},
		parse:function(){
			var self=this;
			this.tplcontent.split(new RegExp('(?='+this.left+')|('+this.right+')')).filter(function(k,v){
                   return !(new RegExp(self.right)).test(v);
            }).each(
			  function(k,v){
			    if((new RegExp('^'+self.left)).test(v)){
				    if(new RegExp('^'+self.left+'\s*=').test(v)){
				       self.body.push(v.replace(new RegExp('^'+self.left+'\s*=(.*)'),'\ttemp.push($1);\n').replace(/\\n/g,''));
				    }else{
					   self.body.push(v.replace(new RegExp('^'+self.left+'\s*(.*)'),'$1\n').replace(/\\n/g,''));
					}
				}
				else {self.body.push('\ttemp.push(\"'+v.replace(/[\n\t]/g,'')+'\");\n');}
			  })
			  return this.body.join("");
		},
		compile:function(){
			if(!this.compiled){
				this.compiled=new Function(this.namespace,'var temp=[];\n'+this.parse()+'\n return  temp.join("");');
			}
			return this.compiled;
		},
		render:function(){
			this.target.innerHTML=this.compile()(this.data);
		}
	}
})(this);
 Array.prototype.filter=function(fn){
   var temp=[];
   for(var i=0,l=this.length;i<l;i++){
      this[i]&&fn.call(this,i,this[i])&&temp.push(this[i]);
   } 
  return temp;
}
Array.prototype.each=function(fn){
   var temp=[];
   for(var i=0,l=this.length;i<l;i++){
     fn.call(this,i,this[i]);
   } 
   return this;
}



  
document.getElementById('render').onclick=function(){
 Template({tpl:document.getElementById('tpl'),target:document.getElementById('ok'),data:{a:{
  name:"coolboy",
  age:21,
  test:"good!",
},
b:100,
url:["http://image9.9158.com/39/37/1402184341/971BA9080689FCF08A61948AC224115C.jpg","http://image9.9158.com/43/36/928573648/C6703ED2CCF75829B050D9F0ED8BB274.jpg","http://image9.9158.com/35/43/1792415536/5CB6C5F949CB9DF3E3A30BA871970002.jpg"],
song:[{songname:"千百度 ",singer:"许嵩",url:"http://zhangmenshiting.baidu.com/data/music/4752698/%E5%8D%83%E7%99%BE%E5%BA%A6.mp3?xcode=f08fdfd64a17ddb73c350b4e1ff22833"},{songname:"想象之中",singer:"许嵩",url:"http://zhangmenshiting.baidu.com/data/music/4753398/%E6%83%B3%E8%B1%A1%E4%B9%8B%E4%B8%AD.mp3?xcode=9354de7edd267ba005efbff149ebffea"},
{songname:"半城烟沙",singer:"许嵩",url:"http://zhangmenshiting.baidu.com/data/music/264925/%E5%8D%8A%E5%9F%8E%E7%83%9F%E6%B2%99.mp3?xcode=cf43709031889621fd7bc075c0ef2950"},
{songname:"最熟悉的陌生人",singer:"萧亚轩",url:"http://media.openedu.com.cn/media_file/netcourse/asx/mxyl/public/mxjs/music/4.MP3"}]
}}).render();
}
         
原文地址:https://www.cnblogs.com/hust/p/2029740.html