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(); }