How to solve Chinese garbled characters in jquery

The solution to jquery Chinese garbled code: Unify the encoding during data interaction to [UTF-8], and the code is [contentType: 'application/json;charset=UTF-8',].

• This method is suitable for all brands of computers

jquery Chinese garbled code Solution:

Method 1, uniformly set the project encoding to UTF-8. Unify the encoding during data interaction to "UTF-8";

Method 2, if the project encoding has been uniformly set to GBK or GB2312, Chinese garbled characters are likely to appear when the ajax call passes Chinese parameters to the server. The processing method is as follows:

Backend:

Code example:

/* =============禁止缓存============== */
response.setHeader("Pragma", "no-cache");
response.setHeader("Cache-Control", "no-cache");
response.setHeader("Expires", "0");
/* =============禁止缓存============== */
response.setContentType("text/html;charset=UTF-8");
response.setCharacterEncoding("UTF-8");
//request.setCharacterEncoding("UTF-8");
String userName = request.getParameter("userName");
userName=URLDecoder.decode(userName, "UTF-8");
             
              //在springmvc中，如没有通过request,或直接设置jquery的编码设置，则需要如下方式转换。
     // mykeyword = new String(keyword.getBytes("iso-8859-1"),"UTF-8");
              //但如果是encodeURI()函数转换，则如下就可以。注意，这时参数在url后面。
              userName=URLDecoder.decode(userName, "UTF-8");

Front end:

Code example:

var myurl="grzx/validateUserNameIsExists.do?userName="+username;
myurl=encodeURI(myurl);
myurl=encodeURI(myurl);
jQuery.ajax({
url:myurl,
type:'POST',
async:false,
data:{},
success:function(data){
    var msg=eval('('+data+')');
  //  var msg=JSON.parse(data);
      if(!msg.result){
    jQuery('#myusername').attr('value','');
         alert('用户名已存在！请用新的用户名');
      }
    }
   });

Encoded twice.

The "laughing loudly" passed in the foreground will be: "laughing loudly" before encoding in the background; even if it is successful.

Of course, it is also possible to encode only once. Just set the jquery encoding to "UTF-8"; and add ;charset='UTF-8'.

For example:

Code example:

contentType : 'application/json;charset=UTF-8',

Related learning recommendations: js video tutorial

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