曾经为看别人写的杂乱代码而头痛吗?曾经为看BWindow代码而烦恼吗?曾经为减小JS体积和JS的可读性之间的矛盾而左右徘徊吗?最好的办法是有个代码格式化和代码压缩的程序,今天总算有了,它是纯JS编写的,当然也就是开源的了.由于写的仓促,还有些小BUG,请经常注意更新!
运行代码框
<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>
<!--
/**//**//**//**
** ==================================================================================================
** 类名：CLASS_FORMATER
** 功能：JS格式化
** 示例：
---------------------------------------------------------------------------------------------------
var xx = new CLASS_FORMATER(code);
document.getElementById("display").innerHTML = xx.format();
---------------------------------------------------------------------------------------------------
** 作者：ttyp
** 邮件：ttyp@21cn.com
** 日期：2006-5-21
** 版本：0.1
** ==================================================================================================
**/
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
