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标题 格式化javascript代码
内容
    查看效果:格式化代码 从比较紧密地javascript转换成标准地javascript代码
    代码如下:
    <html><head><title>format</title>
    <meta content=mshtml 6.00.2800.1528 name=generator>
    <meta content= name=author>
    <meta content= name=keywords>
    <meta content= name=description></head>
    <body>
    <script language=javascript>
    <!--
    function class_format(code){
    //哈希表类
    function hashtable(){
    this._hash = new object();
    this.add = function(key,value){
    if(typeof(key)!=undefined){
    if(this.contains(key)==false){
    this._hash[key]=typeof(value)==undefined？null:value;
    return true;
    } else {
    return false;
    }
    } else {
    return false;
    }
    }
    this.remove = function(key){delete this._hash[key];}
    this.count = function(){var i=0;for(var k in this._hash){i++;} return i;}
    this.items = function(key){return this._hash[key];}
    this.contains = function(key){return typeof(this._hash[key])!=undefined;}
    this.clear = function(){for(var k in this._hash){delete this._hash[k];}}
    }
    this._casesensitive = true;
    //字符串转换为哈希表
    this.str2hashtable = function(key,cs){
    var _key = key.split(/,/g);
    var _hash = new hashtable();
    var _cs = true;
    if(typeof(cs)==undefined||cs==null){
    _cs = this._casesensitive;
    } else {
    _cs = cs;
    }
    for(var i in _key){
    if(_cs){
    _hash.add(_key[i]);
    } else {
    _hash.add((_key[i]+).tolowercase());
    }
    }
    return _hash;
    }
    //获的需要转换地代码
    this._codetxt = code;
    if(typeof(syntax)==undefined){
    syntax = ;
    }
    this._deletecomment = false;
    //是否大小写敏感
    this._casesensitive = true;
    //可以后面加块语句地关键字
    this._blockelement = this.str2hashtable(switch,if,while,try,finally);
    //是函数申明
    this._function = this.str2hashtable(function);
    //本行括号内分号不做换行
    this._isfor = for;
    this._choiceelement = this.str2hashtable(else,catch);
    this._beginblock = {;
    this._endblock = };
    this._singleeyeelement = this.str2hashtable(var,new,return,else,delete,in,case);
    //的到分割字符
    this._worddelimiters= 　 ,.？!;:\\/<>(){}[]\'\r\n\t=+-|*%@#$^&;
    //引用字符
    this._quotation = this.str2hashtable(\,');
    //行注释字符
    this._linecomment = //;
    //转义字符
    this._escape = \\;
    //多行引用开始
    this._commenton = /*;
    //多行引用结束
    this._commentoff = */;
    //行结束词
    this._rowend = ;;
    this._in = in;
    this.iscompress = false;
    this.style = 0;
    this._tabnum = 0;
    this.format = function() {
    var codearr = new array();
    var word_index = 0;
    var htmltxt = new array();
    if(this.iscompress){
    this._deletecomment = true;
    }
    //的到分割字符数组(分词)
    for (var i = 0; i < this._codetxt.length; i++) {
    if (this._worddelimiters.indexof(this._codetxt.charat(i)) == -1) { //找不到关键字
    if (codearr[word_index] == null || typeof(codearr[word_index]) == 'undefined') {
    codearr[word_index] = ;
    }
    codearr[word_index] += this._codetxt.charat(i);
    } else {
    if (typeof(codearr[word_index]) != 'undefined' && codearr[word_index].length > 0)
    word_index++;
    codearr[word_index++] = this._codetxt.charat(i);
    } }
    var quote_opened = false; //引用标记
    var slash_star_comment_opened = false; //多行注释标记
    var slash_slash_comment_opened = false; //单行注释标记
    var line_num = 1; //行号
    var quote_char = ; //引用标记类型
    var function_opened = false;
    var bracket_open = false;
    var for_open = false;
    //按分割字，分块显示
    for (var i=0; i <=word_index; i++){
    //处理空行（由于转义带来）
    if(typeof(codearr[i])==undefined||codearr[i].length==0){
    continue;
    } else if(codearr[i]== ||codearr[i]==\t){
    if(slash_slash_comment_opened||slash_star_comment_opened){
    if(!this._deletecomment){
    htmltxt[htmltxt.length] = codearr[i];
    }
    }
    if(quote_opened){
    htmltxt[htmltxt.length] = codearr[i];
    }
    } else if(codearr[i]==\n){
    //处理换行
    } else if (codearr[i] == \r){
    slash_slash_comment_opened = false;
    quote_opened = false;
    line_num++;
    if(!this.iscompress){
    htmltxt[htmltxt.length] = \r\n+ this.getident();
    }
    //处理function里地参数标记
    } else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&this.isfunction(codearr[i])){
    htmltxt[htmltxt.length] = codearr[i] + ;
    function_opened = true;
    } else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codearr[i]==this._isfor){
    htmltxt[htmltxt.length] = codearr[i];
    for_open = true;
    } else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codearr[i]==(){
    bracket_open = true;
    htmltxt[htmltxt.length] = codearr[i];
    } else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codearr[i]==)){
    bracket_open = false;
    htmltxt[htmltxt.length] = codearr[i];
    } else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codearr[i]==this._rowend){
    if(!this.iscompress){
    if(!for_open){
    if(i<word_index&&(codearr[i+1]!=\r&&codearr[i+1]!=\n)){
    htmltxt[htmltxt.length] = codearr[i] + \n + this.getident();
    }else{
    htmltxt[htmltxt.length] = codearr[i] + this.getident();
    }
    }else{
    htmltxt[htmltxt.length] = codearr[i];
    }
    }else{
    htmltxt[htmltxt.length] = codearr[i];
    }
    } else if(!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codearr[i]==this._beginblock){
    for_open = false;
    if(!this.iscompress){
    switch(this.style){
    case 0:
    this._tabnum++;
    htmltxt[htmltxt.length] = codearr[i] + \n + this.getident();
    break;
    case 1:
    htmltxt[htmltxt.length] = \n + this.getident();
    this._tabnum++;
    htmltxt[htmltxt.length] = codearr[i] + \n+ this.getident();
    break;
    default:
    this._tabnum++;
    htmltxt[htmltxt.length] = codearr[i];
    break;
    }
    }else{
    htmltxt[htmltxt.length] = codearr[i];
    }
    } else if(!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codearr[i]==this._endblock){
    if(!this.iscompress){
    this._tabnum--;
    if(i<word_index&&codearr[i+1]!=this._rowend){
    htmltxt[htmltxt.length] = \n + this.getident() + codearr[i];
    }else{
    htmltxt[htmltxt.length] = \n + this.getident() + codearr[i];
    }
    }else{
    if(i<word_index&&codearr[i+1]!=this._rowend){
    htmltxt[htmltxt.length] = codearr[i] + this._rowend;
    }else{
    htmltxt[htmltxt.length] = codearr[i];
    }
    }
    //处理关键字
    } else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened && this.isblockelement(codearr[i])){
    htmltxt[htmltxt.length] = codearr[i];
    //处理内置对象(后面加一个空格)
    } else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened && this.issingleeyeelement(codearr[i])){
    if(codearr[i]==this._in){
    htmltxt[htmltxt.length] = ;
    }
    htmltxt[htmltxt.length] = codearr[i] + ;
    //处理双引号（引号前不能为转义字符）
    } else if (!slash_star_comment_opened&&!slash_slash_comment_opened&&this._quotation.contains(codearr[i])){
    if (quote_opened){
    //是相应地引号
    if(quote_char==codearr[i]){
    htmltxt[htmltxt.length] = codearr[i];
    quote_opened = false;
    quote_char = ;
    } else {
    htmltxt[htmltxt.length] = codearr[i];
    }
    } else {
    htmltxt[htmltxt.length] = codearr[i];
    quote_opened = true;
    quote_char = codearr[i];
    }
    //处理转义字符
    } else if(codearr[i] == this._escape){
    htmltxt[htmltxt.length] = codearr[i];
    if(i<word_index-1){
    if(codearr[i+1].charcodeat(0)>=32&&codearr[i+1].charcodeat(0)<=127){
    htmltxt[htmltxt.length] = codearr[i+1].substr(0,1);
    htmltxt[htmltxt.length] = codearr[i+1].substr(1);
    i=i+1;
    }
    }
    //处理多行注释地开始
    } else if (!slash_slash_comment_opened && !slash_star_comment_opened&&!quote_opened&&this.isstartwith(this._commenton,codearr,i)){
    slash_star_comment_opened = true;
    if(!this._deletecomment){
    htmltxt[htmltxt.length] = this._commenton;
    }
    i = i + this.getskiplength(this._commenton);
    //处理单行注释
    } else if (!slash_slash_comment_opened && !slash_star_comment_opened&&!quote_opened&&this.isstartwith(this._linecomment,codearr,i)){
    slash_slash_comment_opened = true;
    if(!this._deletecomment){
    htmltxt[htmltxt.length] = this._linecomment;
    }
    i = i + this.getskiplength(this._linecomment);
    //处理忽略词
    } else if (!slash_slash_comment_opened && !slash_star_comment_opened&&!quote_opened&&this.isstartwith(this._ignore,codearr,i)){
    slash_slash_comment_opened = true;
    htmltxt[htmltxt.length] = this._ignore;
    i = i + this.getskiplength(this._ignore);
    //处理多行注释结束
    } else if (!quote_opened&&!slash_slash_comment_opened&&this.isstartwith(this._commentoff,codearr,i)){
    if (slash_star_comment_opened) {
    slash_star_comment_opened = false;
    if(!this._deletecomment){
    htmltxt[htmltxt.length] = this._commentoff;
    }
    i = i + this.getskiplength(this._commentoff);
    }
    } else {
    //不是在字符串中
    if(!quote_opened){
    //如果不是在注释重
    if(!slash_slash_comment_opened && !slash_star_comment_opened){
    htmltxt[htmltxt.length] = codearr[i];
    //注释中
    }else{
    if(!this._deletecomment){
    htmltxt[htmltxt.length] = codearr[i];
    }
    }
    }else{
    htmltxt[htmltxt.length] = codearr[i];
    }
    }
    }
    return htmltxt.join();
    }
    this.isstartwith = function(str,code,index){
    if(typeof(str)!=undefined&&str.length>0){
    var cc = new array();
    for(var i=index;i<index+str.length;i++){
    cc[cc.length] = code[i];
    }
    var c = cc.join();
    if(this._casesensitive){
    if(str.length>=code[index].length&&c.indexof(str)==0){
    return true;
    }
    }else{
    if(str.length>=code[index].length&&c.tolowercase().indexof(str.tolowercase())==0){
    return true;
    }
    }
    return false;
    } else {
    return false;
    }
    }
    this.isfunction = function(val){
    return this._function.contains(this._casesensitive？val:val.tolowercase());
    }
    this.isblockelement = function(val) {
    return this._blockelement.contains(this._casesensitive？val:val.tolowercase());
    }
    this.ischoiceelement = function(val) {
    return this._choiceelement.contains(this._casesensitive？val:val.tolowercase());
    }
    this.issingleeyeelement = function(val) {
    return this._singleeyeelement.contains(this._casesensitive？val:val.tolowercase());
    }
    this.isnextelement = function(from,word){
    for(var i=from;i<word.length;i++){
    if(word[i]!= &&word[i]!=\t&&word[i]!=\r&&word[i]!=\n){
    return this.ischoiceelement(word[i]);
    }
    }
    return false;
    }
    this.getskiplength = function(val){
    var count = 0;
    for(var i=0;i<val.length;i++){
    if(this._worddelimiters.indexof(val.charat(i))>=0){
    count++;
    }
    }
    if(count>0){
    count=count-1;
    }
    return count;
    }
    this.getident=function(){
    var n = [];
    for(var i=0;i<this._tabnum;i++){
    n[n.length] = \t;
    }
    return n.join();
    }
    }
    function doformat(o){
    var htmltxt = ;
    if (o == null){
    alert(domnode is null!);
    return;
    }
    var _codetxt = ;
    if(typeof(o)==object){
    switch(o.tagname){
    case textarea:
    case input:
    _codetxt = o.value;
    break;
    case div:
    case span:
    _codetxt = o.innertext;
    break;
    default:
    _codetxt = o.innerhtml;
    break;
    }
    }else{
    _codetxt = o;
    }
    var _syn = new class_format(_codetxt);
    htmltxt = _syn.format();
    return htmltxt;
    }
    function go()
    {
    var code = document.getelementbyid(code).value;
    var xx = new class_format(code);
    var a = new date();
    if(document.getelementbyid('cbooperate').selectedindex==1){
    xx.iscompress=true;
    }else{
    xx.style = parseint(document.getelementbyid('cbostyle').value);
    }
    document.getelementbyid(display).value = xx.format();
    }
    //-->
    </script>
    <textarea id=code rows=12 cols=100>
    </textarea> <br>
    <select id=cbooperate onchange=if(this.selectedindex==1)document.getelementbyid('cbostyle').disabled=true;else document.getelementbyid('cbostyle').disabled=false;>
    <option value=0>格式化</option>
    <option value=1>压缩</option>
    </select>
    <select id=cbostyle>
    <option value=0>经典</option>
    <option value=1>微软</option>
    </select>
    <input onclick=go() type=button value=go><br>
    <textarea id=display rows=12 cols=100>
    </text_area>
    </body></html>
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更新时间：2025/5/13 20:37:47