Javascript怎样进行HTML转义
JavaScript代码
- $package("js.lang"); // 没有包管理时,也可简单写成 js = {lang:{}};
- js.lang.String = function(){
- this.REGX_HTML_ENCODE = /"|&|'|<|>|[\x00-\x20]|[\x7F-\xFF]|[\u0100-\u2700]/g;
- this.REGX_HTML_DECODE = /&\w+;|&#(\d+);/g;
- this.REGX_TRIM = /(^\s*)|(\s*$)/g;
- this.HTML_DECODE = {
- "<" : "<",
- ">" : ">",
- "&" : "&",
- " ": " ",
- """: "\"",
- "©": ""
- // Add more
- };
- this.encodeHtml = function(s){
- s = (s != undefined) ? s : this.toString();
- return (typeof s != "string") ? s :
- s.replace(this.REGX_HTML_ENCODE,
- function($0){
- var c = $0.charCodeAt(0), r = ["&#"];
- c = (c == 0x20) ? 0xA0 : c;
- r.push(c); r.push(";");
- return r.join("");
- });
- };
- this.decodeHtml = function(s){
- var HTML_DECODE = this.HTML_DECODE;
- s = (s != undefined) ? s : this.toString();
- return (typeof s != "string") ? s :
- s.replace(this.REGX_HTML_DECODE,
- function($0, $1){
- var c = HTML_DECODE[$0];
- if(c == undefined){
- // Maybe is Entity Number
- if(!isNaN($1)){
- c = String.fromCharCode(($1 == 160) ? 32:$1);
- }else{
- c = $0;
- }
- }
- return c;
- });
- };
- this.trim = function(s){
- s = (s != undefined) ? s : this.toString();
- return (typeof s != "string") ? s :
- s.replace(this.REGX_TRIM, "");
- };
- this.hashCode = function(){
- var hash = this.__hash__, _char;
- if(hash == undefined || hash == 0){
- hash = 0;
- for (var i = 0, len=this.length; i < len; i++) {
- _char = this.charCodeAt(i);
- hash = 31*hash + _char;
- hash = hash & hash; // Convert to 32bit integer
- }
- hash = hash & 0x7fffffff;
- }
- this.__hash__ = hash;
- return this.__hash__;
- };
- };
- js.lang.String.call(js.lang.String);