网站首页  汉语字词  英语词汇  考试资料  写作素材  旧版资料

请输入您要查询的范文：

　

标题 格式化javascript代码
范文
    查看效果:格式化代码 从比较紧密的javascript转换成标准的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;
    }
    //获得需要转换的代码
    this._codetxt = code;
    if(typeof(syntax)=="undefined"){
    syntax = "";
    }
    this._deleteComment = false;
    //是否大小写敏感
    this._caseSensitive = true;
    //可以后面加块语句的关键字
    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");
    //得到分割字符
    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;
    }
    //得到分割字符数组(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里的参数标记
    } 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){
    //是相应的引号
    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;
    }
    }
    //处理多行注释的开始
    } 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>
随便看

　

在线学习网范文大全提供好词好句、学习总结、工作总结、演讲稿等写作素材及范文模板，是学习及工作的有利工具。

　

Copyright © 2002-2024 cuapp.net All Rights Reserved
更新时间：2025/5/19 15:51:26