兼容低版本IE的JScript5.5實現

2019-11-21 02:30:34

字體：大中小

來源：轉載

供稿：網友

作者Blog：www.coolcode.cn

IE 5.5 中的 JScript 版本是 5.5 版，它比以前版本的 JScript 中多了如數組的 push、pop、shift、unshift 方法和 encodeURI、decodeURI 等一些重要的函數。而這些增加的內容在目前其他瀏覽器（如 Moziila/Firefox 和 Opera）上也同樣支持。因此目前開發網站一般對于 IE 瀏覽器只能兼容到 5.5 版，而對于更低版本的 IE（如 IE 5、IE 4 等），則不再去考慮了。雖然這些低版本的 IE 瀏覽器目前已經不是主流，但如果能夠不需要修改現有代碼就能夠兼容它們的話，倒是也可以考慮。因此我做了這個兼容低版本 IE 的 JScript 5.5 實現。當然它不可能完全兼容 JScript 5.5，但對于最常用的一些方法，都已經實現了。

該庫使用非常簡單，只需要在網頁的 head 部分加入：

<script type="text/javascript" src="iecompat.js"></script>
就可以了。

完全實現的：

Array 對象中：

?push 方法
?pop 方法
?shift 方法
?unshift 方法
?splice 方法

Date 對象中：

?toDateString 方法
?toTimeString 方法
?toLocaleDateString 方法
?toLocaleTimeString 方法
?Function 對象中：
?apply 方法
?call 方法

Global 對象中：

?undefined 屬性
?encodeURI 方法
?encodeURIComponent 方法
?decodeURI 方法
?decodeURIComponent 方法

Number 對象中：

?toExponential 方法
?toFixed 方法
?toPrecision 方法

對于錯誤處理，IE 5（JScript 5）中已經有了 try…catch 和 throw 語句，因此 decodeURI、decodeURIComponent、toExponential、toFixed、toPrecision、apply 如果出現運行期錯誤，在 IE 5 上會拋出跟 IE 5.5+ 中一樣的錯誤信息，但是因為 IE 4 沒有錯誤處理語句，如果上述函數出現運行期錯誤，將會返回 null。注意上面說的運行期錯誤，不是指上述函數實現中的錯誤，而是指在這些函數正常工作的情況下應該出現的錯誤。

其中 Function 的 apply 函數的實現參考了：
http://www.openjsan.org/doc/a/ad/adamk/Upgrade/0.04/lib/Upgrade/Function/apply.html
這段程序。

不完全實現的：

Error 對象

Object 對象中：

?isPrototypeOf 方法
?hasOwnProperty 方法
?propertyIsEnumerable 方法

String 對象中：

?toLocaleLowerCase 方法
?toLocaleUpperCase 方法
?localeCompare 方法

因為 IE 4 不具備錯誤處理語句，因此 Error 對象在 IE 4 上并不具備 IE 5 以上 Error 對象應具有的功能，因此它對于 IE 4 的實現只能保證你在訪問或創建它時不會出錯。

Object 中的 isPrototypeOf、hasOwnProperty 和 propertyIsEnumerable 方法只是做了模擬實現，其返回值并非總是正確。

String 對象中的 toLocaleLowerCase、toLocaleUpperCase 和 localeCompare 方法實際上并沒有考慮本地字符集，但在大部分系統上它還是工作正常的。

完全沒有實現的：

正則表達式對象中擴充的屬性和限定符

下載: iecompat.js

/* iecompat.js * * Copyright Ma Bingyao <andot@ujn.edu.cn> * Version: 1.3 * LastModified: 2006-06-18 * This library is free.  You can redistribute it and/or modify it. * http://www.coolcode.cn/?p=126 */   /*@cc_on @*/   /*@if (@_jscript_version < 5)   function Error(number, description) {     if (!number) this.number = 0;     else this.number = number;     if (!description) this.description = "";     else this.description = description; }   @end @*/   /*@if (@_jscript_version < 5.5)   // this return value was not very correct Object.prototype.isPrototypeOf = function (o) {     return (this.constructor == o.constructor); }   // this return value was not very correct Object.prototype.hasOwnProperty = function (proName) {     return (typeof(eval("this." + proName)) != "undefind"); }   Object.prototype.propertyIsEnumerable = function (proName) {     for (var o in this) {         if ((proName == o.toString()) &&             (proName != "propertyIsEnumerable") &&             (proName != "isPrototypeOf") &&             (proName != "hasOwnProperty")) return true;     }     return false; }   Error.prototype.message = ""; Error.prototype.name = "Error";   Date.prototype.toDateString = function () {     var s = this.toString().split(' ');     return [s[0], s[1], s[2], s[5]].join(' '); }   Date.prototype.toTimeString = function () {     var s = this.toString().split(' ');     return [s[3], s[4]].join(' '); }   Date.prototype.toLocaleDateString = function () {     return this.toLocaleString().split(' ')[0]; }   Date.prototype.toLocaleTimeString = function () {     return this.toLocaleString().split(' ')[1]; }   String.prototype.toLocaleLowerCase = function () {     return this.toLowerCase(); }   String.prototype.toLocaleUpperCase = function () {     return this.toUpperCase(); }   String.prototype.localeCompare = function (str) {     if (this > str) return 1;     if (this < str) return -1;     return 0; }   Number.prototype.toExponential = function (n) {     function repeat(s, n) {         var out = "";         for (var i = 0; i < n; i++) {             out += s;         }         return out;     }     if (!n) {         n = 0;     }     else {         n = parseInt(n);         if (n < 0 || n > 20) {             @if (@_jscript_version < 5)                 return null;             @else                 var e = new Error(-2146823262, "The number of fractional digits is out of range");                 e.name = "RangeError";                 e.message = e.description;                 throw(e);             @end         }     }     var s, d, e, len;     s = this.toString().split("e");     d = parseFloat(s[0]);     e = 0;     if (typeof(s[1]) != "undefined") {         e = parseInt(s[1]);     }     s = d.toString().split(".");     if (typeof(s[1]) != "undefined") {         e = e - s[1].length;         d = s[0] + s[1];         d = d.replace(/^0+/g, "");         if (d == "") d = "0";     }     s = d.toString();     len = s.length - 1;     e += len;     if (len < n) {         s += repeat("0", n - len);     }     else if (len > n) {         s = Math.round(parseFloat("." + s) * Math.pow(10, n + 1)).toString();         if ((s.length - 1) > n) {             e += 1;             s = Math.round(parseFloat("." + s) * Math.pow(10, n + 1)).toString();         }     }     if (e >= 0) {         e = "+" + e;     }     if (n == 0) {         return s + "e" + e;     }     else {         return s.substr(0, 1) + "." + s.substr(1) + "e" + e;     } }   Number.prototype.toFixed = function (n) {     function repeat(s, n) {         var out = "";         for (var i = 0; i < n; i++) {             out += s;         }         return out;     }     if (!n) {         n = 0;     }     else {         n = parseInt(n);         if (n < 0 || n > 20) {             @if (@_jscript_version < 5)                 return null;             @else                 var e = new Error(-2146823262, "The number of fractional digits is out of range");                 e.name = "RangeError";                 e.message = e.description;                 throw(e);             @end         }     }     var s, d, e, len;     s = this.toString().split("e");     d = parseFloat(s[0]);     e = 0;     if (typeof(s[1]) != "undefined") {         e = parseInt(s[1]);     }     s = d.toString().split(".");     if (typeof(s[1]) != "undefined") {         e = e - s[1].length;         d = s[0] + s[1];         d = d.replace(/^0+/g, "");         if (d == "") d = "0";     }     s = d.toString();     len = s.length - 1;          if (e >= 0) {         s += repeat("0", e);         if (n > 0) {             s += "." + repeat("0", n);         }     }     else if (-e <= n) {         s = repeat("0", 1 - e - s.length) + s;         s = s.substr(0, s.length + e) + "." + s.substr(s.length + e) + repeat("0", n + e);     }     else {         s = repeat("0", 1 - e - s.length) + s;         d = parseFloat(s.substr(0, s.length + e) + "." + s.substr(s.length + e));         s = Math.round(d * Math.pow(10, n)).toString();         if (n > 0) {             s = repeat("0", n - s.length + 1) + s;             s = s.substr(0, s.length - n) + "." + s.substr(s.length - n);         }     }     return s; }   Number.prototype.toPrecision = function (n) {     function repeat(s, n) {         var out = "";         for (var i = 0; i < n; i++) {             out += s;         }         return out;     }     if (typeof(n) == "undefined") {         return this.toString();     }     else {         n = parseInt(n);         if (n < 1 || n > 21) {             @if (@_jscript_version < 5)                 return null;             @else                 var e = new Error(-2146823262, "The precision is out of range");                 e.name = "RangeError";                 e.message = e.description;                 throw(e);             @end         }     }     if (this.valueOf() == 0) {         if (n == 1) return "0";         return "0." + repeat("0", n - 1);     }     var s, d, e, len;     s = this.toString().split("e");     d = parseFloat(s[0]);     e = 0;     if (typeof(s[1]) != "undefined") {         e = parseInt(s[1]);     }     s = d.toString().split(".");     if (typeof(s[1]) != "undefined") {         e = e - s[1].length;         d = s[0] + s[1];         d = d.replace(/^0+/g, "");         if (d == "") d = "0";     }     s = d.toString();     len = s.length;     d = parseFloat("." + s) * Math.pow(10, n);     s = Math.round(d).toString();     if (s.length > parseInt(d).toString().length) {         e++;         s = s.slice(0, -1);     }     e += len - s.length;     len = s.length;     e += len - 1;       if (e < n && e > -7) {         if ((e < n - 1) && (e > 0)) {             s = s.substr(0, e + 1) + "." + s.substr(e + 1);         }         else if (e <= 0) {             s = repeat("0", - e) + s;             s = s.substr(0, 1) + "." + s.substr(1);         }     }     else {         if (len < n) {             s += repeat("0", n - len);         }         if (e >= 0) {             e = "+" + e;         }         if (n == 1) {             s += "e" + e;         }         else {             s = s.substr(0, 1) + "." + s.substr(1) + "e" + e;         }     }     return s; }   var undefined;   function encodeURI(str) {     var l = ['%00', '%01', '%02', '%03', '%04', '%05', '%06',              '%07', '%08', '%09', '%0A', '%0B', '%0C', '%0D',              '%0E', '%0F', '%10', '%11', '%12', '%13', '%14',              '%15', '%16', '%17', '%18', '%19', '%1A', '%1B',              '%1C', '%1D', '%1E', '%1F', '%20', '!', '%22',              '#', '$', '%25', '&', "'", '(', ')', '*', '+', ',',              '-', '.', '/', '0', '1', '2', '3', '4', '5', '6',              '7', '8', '9', ':', ';', '%3C', '=', '%3E', '?',              '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I',              'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S',              'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '%5B', '%5C',              '%5D', '%5E', '_', '%60', 'a', 'b', 'c', 'd', 'e',              'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',              'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y',              'z', '%7B', '%7C', '%7D', '~', '%7F'];     var out, i, j, len, c, c2;       out = [];     len = str.length;     for (i = 0, j = 0; i < len; i++) {         c = str.charCodeAt(i);         if (c <= 0x007F) {             out[j++] = l[c];             continue;         }         else if (c <= 0x7FF) {             out[j++] = '%' + (0xC0 | ((c >>  6) & 0x1F)).toString(16).toUpperCase();             out[j++] = '%' + (0x80 | (        c & 0x3F)).toString(16).toUpperCase();             continue;         }         else if (c < 0xD800 || c > 0xDFFF) {             out[j++] = '%' + (0xE0 | ((c >> 12) & 0x0F)).toString(16).toUpperCase();             out[j++] = '%' + (0x80 | ((c >>  6) & 0x3F)).toString(16).toUpperCase();             out[j++] = '%' + (0x80 |         (c & 0x3F)).toString(16).toUpperCase();             continue;         }         else {             if (++i < len) {                 c2 = str.charCodeAt(i);                 if (c <= 0xDBFF && 0xDC00 <= c2 && c2 <= 0xDFFF) {                     c = ((c & 0x03FF) << 10 | (c2 & 0x03FF)) + 0x010000;                     if (0x010000 <= c && c <= 0x10FFFF) {                         out[j++] = '%' + (0xF0 | ((c >>> 18) & 0x3F)).toString(16).toUpperCase();                         out[j++] = '%' + (0x80 | ((c >>> 12) & 0x3F)).toString(16).toUpperCase();                         out[j++] = '%' + (0x80 | ((c >>>  6) & 0x3F)).toString(16).toUpperCase();                         out[j++] = '%' + (0x80 |          (c & 0x3F)).toString(16).toUpperCase();                         continue;                     }                 }             }         }         @if (@_jscript_version < 5)             return null;         @else             var e = new Error(-2146823264, "The URI to be encoded contains an invalid character");             e.name = "URIError";             e.message = e.description;             throw(e);         @end     }     return out.join(''); }   function encodeURIComponent(str) {     var l = ['%00', '%01', '%02', '%03', '%04', '%05', '%06',              '%07', '%08', '%09', '%0A', '%0B', '%0C', '%0D',              '%0E', '%0F', '%10', '%11', '%12', '%13', '%14',              '%15', '%16', '%17', '%18', '%19', '%1A', '%1B',              '%1C', '%1D', '%1E', '%1F', '%20', '!', '%22',              '%23', '%24', '%25', '%26', "'", '(', ')', '*', '%2B', '%2C',              '-', '.', '%2F', '0', '1', '2', '3', '4', '5', '6',              '7', '8', '9', '%3A', '%3B', '%3C', '%3D', '%3E', '%3F',              '%40', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I',              'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S',              'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '%5B', '%5C',              '%5D', '%5E', '_', '%60', 'a', 'b', 'c', 'd', 'e',              'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',              'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y',              'z', '%7B', '%7C', '%7D', '~', '%7F'];     var out, i, j, len, c;       out = [];     len = str.length;     for(i = 0, j = 0; i < len; i++) {         c = str.charCodeAt(i);         if (c <= 0x007F) {             out[j++] = l[c];             continue;         }         else if (c <= 0x7FF) {             out[j++] = '%' + (0xC0 | ((c >>  6) & 0x1F)).toString(16).toUpperCase();             out[j++] = '%' + (0x80 | (        c & 0x3F)).toString(16).toUpperCase();             continue;         }         else if (c < 0xD800 || c > 0xDFFF) {             out[j++] = '%' + (0xE0 | ((c >> 12) & 0x0F)).toString(16).toUpperCase();             out[j++] = '%' + (0x80 | ((c >>  6) & 0x3F)).toString(16).toUpperCase();             out[j++] = '%' + (0x80 |         (c & 0x3F)).toString(16).toUpperCase();             continue;         }         else {             if (++i < len) {                 c2 = str.charCodeAt(i);                 if (c <= 0xDBFF && 0xDC00 <= c2 && c2 <= 0xDFFF) {                     c = ((c & 0x03FF) << 10 | (c2 & 0x03FF)) + 0x010000;                     if (0x010000 <= c && c <= 0x10FFFF) {                         out[j++] = '%' + (0xF0 | ((c >>> 18) & 0x3F)).toString(16).toUpperCase();                         out[j++] = '%' + (0x80 | ((c >>> 12) & 0x3F)).toString(16).toUpperCase();                         out[j++] = '%' + (0x80 | ((c >>>  6) & 0x3F)).toString(16).toUpperCase();                         out[j++] = '%' + (0x80 |          (c & 0x3F)).toString(16).toUpperCase();                         continue;                     }                 }             }         }         @if (@_jscript_version < 5)             return null;         @else             var e = new Error(-2146823264, "The URI to be encoded contains an invalid character");             e.name = "URIError";             e.message = e.description;             throw(e);         @end     }     return out.join(''); }   function decodeURI(str) {     function throwerror() {         @if (@_jscript_version < 5)             return null;         @else             var e = new Error(-2146823263, "The URI to be decoded is not a valid encoding");             e.name = "URIError";             e.message = e.description;             throw(e);         @end     }     function checkcode() {         var d1, d2;         d1 = str.charAt(i++);         d2 = str.charAt(i++);         if (isNaN(parseInt(d1, 16)) || isNaN(parseInt(d2, 16))) {             return throwerror();         }         return parseInt(d1 + d2, 16);     }     function checkutf8() {         var c = str.charCodeAt(i++);         if (c == 37) {             if ((c = checkcode()) == null) return null;         }         if ((c >> 6) != 2) {             return throwerror();         }     }     var out, i, j, len;     var c, c2, c3, c4, s;       out = [];     len = str.length;     i = j = 0;     while(i < len) {         c = str.charCodeAt(i++);         if (c == 37) {             if ((c = checkcode()) == null) return null;         }         else {             out[j++] = String.fromCharCode(c);             continue;         }         switch(c) {             case 35: case 36: case 38: case 43: case 44: case 47:             case 58: case 59: case 61: case 63: case 64: {                 if (str.charCodeAt(i - 3) == 37) {                     out[j++] = str.substr(i - 3, 3);                 }                 else {                     out[j++] = str.substr(i - 1, 1);                 }                 break;             }             default: {                 switch (c >> 4) {                      case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7: {                         // 0xxxxxxx                         out[j++] = String.fromCharCode(c);                         break;                     }                     case 12: case 13: {                         // 110x xxxx   10xx xxxx                         if ((c2 = checkutf8()) == null) return null;                         out[j++] = String.fromCharCode(((c & 0x1F) << 6) | (c2 & 0x3F));                         break;                     }                     case 14: {                         // 1110 xxxx  10xx xxxx  10xx xxxx                         if ((c2 = checkutf8()) == null) return null;                         if ((c3 = checkutf8()) == null) return null;                         out[j++] = String.fromCharCode(((c & 0x0F) << 12) |                             ((char2 & 0x3F) << 6) | ((char3 & 0x3F) << 0));                         break;                     }                     default: {                         switch (c & 0xf) {                             case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7: {                                 // 1111 0xxx  10xx xxxx  10xx xxxx  10xx xxxx                                 if ((c2 = checkutf8()) == null) return null;                                 if ((c3 = checkutf8()) == null) return null;                                 if ((c4 = checkutf8()) == null) return null;                                 s = ((c  & 0x07) << 18) |                                     ((c2 & 0x3f) << 12) |                                     ((c3 & 0x3f) <<  6) |                                     (c4 & 0x3f) - 0x10000;                                 if (0 <= s && s <= 0xfffff) {                                     out[j++] = String.fromCharCode(((s >>> 10) & 0x03ff) | 0xd800,                                                                     (s         & 0x03ff) | 0xdc00);                                 }                                 else {                                     return throwerror();                                 }                                 break;                             }                             default: {                                 return throwerror();                             }                         }                     }                 }             }         }     }     return out.join(''); }   function decodeURIComponent(str) {     function throwerror() {         @if (@_jscript_version < 5)             return null;         @else             var e = new Error(-2146823263, "The URI to be decoded is not a valid encoding");             e.name = "URIError";             e.message = e.description;             throw(e);         @end     }     function checkcode() {         var d1, d2;         d1 = str.charAt(i++);         d2 = str.charAt(i++);         if (isNaN(parseInt(d1, 16)) || isNaN(parseInt(d2, 16))) {             return throwerror();         }         return parseInt(d1 + d2, 16);     }     function checkutf8() {         var c = str.charCodeAt(i++);         if (c == 37) {             if ((c = checkcode()) == null) return null;         }         if ((c >> 6) != 2) {             return throwerror();         }     }     var out, i, j, len;     var c, c2, c3, c4, s;       out = [];     len = str.length;     i = j = 0;     while(i < len) {         c = str.charCodeAt(i++);         if (c == 37) {             if ((c = checkcode()) == null) return null;         }         else {             out[j++] = String.fromCharCode(c);             continue;         }         switch(c >> 4) {              case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7: {                 // 0xxxxxxx                 out[j++] = String.fromCharCode(c);                 break;             }             case 12: case 13: {                 // 110x xxxx   10xx xxxx                 if ((c2 = checkutf8()) == null) return null;                 out[j++] = String.fromCharCode(((c & 0x1F) << 6) | (c2 & 0x3F));                 break;             }             case 14: {                 // 1110 xxxx  10xx xxxx  10xx xxxx                 if ((c2 = checkutf8()) == null) return null;                 if ((c3 = checkutf8()) == null) return null;                 out[j++] = String.fromCharCode(((c & 0x0F) << 12) |                     ((char2 & 0x3F) << 6) | ((char3 & 0x3F) << 0));                 break;             }             default: {                 switch (c & 0xf) {                     case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7: {                         // 1111 0xxx  10xx xxxx  10xx xxxx  10xx xxxx                         if ((c2 = checkutf8()) == null) return null;                         if ((c3 = checkutf8()) == null) return null;                         if ((c4 = checkutf8()) == null) return null;                         s = ((c  & 0x07) << 18) |                             ((c2 & 0x3f) << 12) |                             ((c3 & 0x3f) <<  6) |                             (c4 & 0x3f) - 0x10000;                         if (0 <= s && s <= 0xfffff) {                             out[j++] = String.fromCharCode(((s >>> 10) & 0x03ff) | 0xd800,                                                             (s         & 0x03ff) | 0xdc00);                         }                         else {                             return throwerror();                         }                         break;                     }                     default: {                         return throwerror();                     }                 }             }         }     }     return out.join(''); }   Array.prototype.push = function () {     var curlen = this.length;     for (var i = 0; i < arguments.length; i++) {         this[curlen + i] = arguments[i];     }     return this.length; }   Array.prototype.pop = function () {     var returnValue = this[this.length - 1];     this.length--;     return returnValue; }   Array.prototype.shift = function () {     var returnValue = this[0];     for (var i = 1; i < this.length; i++) {         this[i - 1] = this[i];     }     this.length--;     return returnValue; }   Array.prototype.unshift = function () {     var curlen = this.length;     var arglen = arguments.length;     for (var i = curlen - 1; i >= 0 ; i--) {         this[i + arglen] = this[i] ;     }     for (var i = 0; i < arglen; i++) {         this[i] = arguments[i];     }     //return this.length;  // return this value is Gecko/Opera implementation. but IE don't return anything. }   Array.prototype.splice = function () {     var start = arguments[0];     var deleteCount = arguments[1];     var len = arguments.length - 2;     var returnValue = this.slice(start);     for (var i = 0; i < len; i++) {         this[start + i] = arguments[i + 2];     }     for (var i = 0; i < returnValue.length - deleteCount; i++) {         this[start + len + i] = returnValue[deleteCount + i];     }     this.length = start + len + returnValue.length - deleteCount;     returnValue.length = deleteCount;     return returnValue; }   Function.prototype.apply = function (o, p) {     var ps = [];     if (typeof(o) == "undefined") {         var __$$apply$$__ = this;         return eval('__$$apply$$__(' + ps.join(', ') + ');');     }     if (p) {         if (typeof(p[0]) == "undefined") {             @if (@_jscript_version < 5)                 return null;             @else                 var e = new Error(-2146823260, "Array or arguments object expected");                 e.name = "TypeError";                 e.message = e.description;                 throw(e);             @end         }         for (var i = 0; i < p.length; i++) {             ps[i] = 'p[' + i + ']';         }     }     if ((typeof(o) == "object") || (typeof(o) == "function")) {         o.__$$apply$$__ = this;         var returnValue = eval('o.__$$apply$$__(' + ps.join(', ') + ');');         o.__$$apply$$__ = null;         return returnValue;     }     else {         this.__$$apply$$__ = this;         var returnValue = eval('this.__$$apply$$__(' + ps.join(', ') + ');');         this.__$$apply$$__ = null;         return returnValue;     } }   Function.prototype.call = function (o) {     var ps = [];     if (typeof(o) == "undefined") {         var __$$call$$__ = this;         return eval('__$$call$$__(' + ps.join(', ') + ');');     }     if (arguments.length > 1) {         for (var i = 1; i < arguments.length; i++) {             ps[i - 1] = 'arguments[' + i + ']';         }     }     if ((typeof(o) == "object") || (typeof(o) == "function")) {         o.__$$call$$__ = this;         var returnValue = eval('o.__$$call$$__(' + ps.join(', ') + ');');         o.__$$call$$__ = null;         return returnValue;     }     else {         this.__$$call$$__ = this;         var returnValue = eval('this.__$$call$$__(' + ps.join(', ') + ');');         this.__$$call$$__ = null;         return returnValue;     } }   @end @*/

[Ctrl+A 全選注:如需引入外部Js需刷新才能執行]

如果你想測試低版本的 IE 瀏覽器上的效果，又沒有安裝低版本的 IE 瀏覽器，可以使用這個包：ie_all.zip 。這里面都是不需要安裝的 IE，直接釋放壓縮包到一個目錄下，就可以運行了。如果你是 win9x 系統，可以到這里下載 win9x 版的 standalone IE。

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