解决JSON包含HTML标签无法显示的问题

function dotran($str) {
 $str = str_replace('"','//"',$str);
 $str = str_replace("/r/n",'//r//n',$str);
 $str = str_replace("/t",'//t',$str);
 $str = str_replace("//",'//',$str);
 $str = str_replace("/b",'//b',$str);
 return $str;
 }
这样返回的数据就可以正常显示，下面是转换后的内容：
jsontext='{"jqry":[{"id":"121","userid":"0","status":"1","filename":"","url":"333333333","title":"aaaaaaa","type":"WatchTV","seq":"1","remark":"remarktext","content":"//r//n//t<object classid=//"clsid:d27cdb6e-ae6d-11cf-96b8-444553540000//" codebase=//"http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,40,0//"><param name=//"quality//" value=//"high//" /><param name=//"movie//" value=//"http://www.xxx.com/vod/COD4_Ep1.swf//" /><embed pluginspage=//"http://www.macromedia.com/go/getflashplayer//" quality=//"high//" src=//"http://www.xxx.com/vod/COD4_Ep1.swf//" type=//"application/x-shockwave-flash//"></embed></object>//r//n"}]}';

HTML转换函数
public string ChangeString(string str)
{
//str含有HTML标签的文本
str = str.Replace("<","<");
str = str.Replace(">",">");
str = str.Replace(" "," ");
str = str.Replace(" "," ");
str = str.Replace("&","&");
return str;
}
=======================

js字符过滤html标签互转函数
function htmlencode(str) {
str = str.replace(/&/g, '&');
str = str.replace(/</g, '<');
str = str.replace(/>/g, '>');
str = str.replace(/(?:t| |v|r)*n/g, ' ');
str = str.replace(/ /g, '  ');
str = str.replace(/t/g, '    ');
str = str.replace(/x22/g, '"');
str = str.replace(/x27/g, ''');
return str;
}

function htmldecode(str) {
str = str.replace(/&/gi, '&');
str = str.replace(/ /gi, ' ');
str = str.replace(/"/gi, '"');
str = str.replace(/'/g, "'");
str = str.replace(/</gi, '<');
str = str.replace(/>/gi, '>');
str = str.replace(/<br[^>]*>(?:(rn)|r|n)?/gi, 'n');
return str;
}

function textencode(str) {
str = str.replace(/&/gi, '&');
str = str.replace(/</g, '<');
str = str.replace(/>/g, '>');
return str;
}

function textdecode(str) {
str = str.replace(/&/gi, '&');
str = str.replace(/</gi, '<');
str = str.replace(/>/gi, '>');
return str;
}

实例1

RT：
返回的Json数据如下、带Html标签就无法显示了、

{"articleList": [{"articleId":6,"title":"拜拜拜拜吧","author":"superman","content":"BBBBBBBBBBBB","hits":"0"}, {"articleId":7,"title":"333","author":"superman","content":"333333333333333333333333333333333333","hits":"0"}, {"articleId":1,"title":"阿萨德","author":"heshan","content":"test","hits":"0"}, {"articleId":2,"title":"阿萨德","author":"superman","content":"123<img src="http://localhost:8080/jpkc/admin/kindeditor/plugins/emoticons/0.gif" alt="" border="0" /> ","hits":"0"},{"articleId":3,"title":"TEST1","author":"superman","content":"TEST1 ","hits":"0"},{"articleId":4,"title":"测试","author":"superman","content":"测试功能!!!!","hits":"0"}, {"articleId":5,"title":"test!","author":"superman","content":"KE.util.setFullHtml('content', '');","hits":"0"},]}

解决办法：
"content":"123<img src="http://localhost:8080/jpkc/admin/kindeditor/plugins/emoticons/0.gif" alt="" border="0"/> "
改为
"content":"123<img src='http://localhost:8080/jpkc/admin/kindeditor/plugins/emoticons/0.gif' alt='' border='0' /> "

js方法：str.replaceAll(""","'");

实例2：

从服务器端以JSON格式将数据传递到客户端后，通过JS显示在HTML页面时，有一些特殊字符不能直接显示，如后台传递过来的是 'msg #' 通过JS显示在HTML页面中时，显示成了 msg # ，并不是msg #，这是由于<与>之间的内容看作是HTML标签了，而以&开头的与#为HTML实体，所以显示不正常。

解决办法很简单，在JS将其渲染到HTML页面前转换一下即可：

`01`	`<script type="text/javascript">`

`02`	`var` `str =` `'<b>msg</b> #';`

`03`	`document.all.div1.innerHTML='<pre>'+str+'</pre>';`

04

`05`	`//js中的字符串正常显示在HTML页面中`

`06`	`String.prototype.displayHtml=` `function(){`

`07`	`//将字符串转换成数组`

`08`	`var` `strArr =` `this.split('');`

`09`	`//HTML页面特殊字符显示，空格本质不是，但多个空格时浏览器默认只显示一个，所以替换`

`10`	`var` `htmlChar="&<>";`

`11`	`for(var` `i = 0; i< str.length;i++){`

`12`	`//查找是否含有特殊的HTML字符`

`13`	`if(htmlChar.indexOf(str.charAt(i)) !=-1){`

`14`	`//如果存在，则将它们转换成对应的HTML实体`

`15`	`switch` `(str.charAt(i)) {`

`16`	`case` `'<':`

`17`	`strArr.splice(i,1,'<');`

18 break;

`19`	`case` `'>':`

`20`	`strArr.splice(i,1,'>');`

21 break;

`22`	`case` `'&':`

`23`	`strArr.splice(i,1,'&');`

24 }

25 }

26 }

`27`	`return` `strArr.join('');`

28 }

`29`	`alert(str.displayHtml());`

`30`	`document.all.div2.innerHTML=str.displayHtml();`

`31`	`</script>`