How to get ModelAndView value using js-JS Tutorial-php.cn

How to get ModelAndView value using js

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Release： 2018-05-26 13:55:10

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This time I will show you how to use js to get the ModelAndView value, and what are the precautions for using js to get the ModelAndView value. The following is a practical case, let's take a look.

1 Method 1 [Valid]

Yes, the access method is the same as elexpression.

Sample code, a userId is stored in the Action of a data display request:

 @RequestMapping(value="/diary")
  public ModelAndView toDiaryList(HttpSession session){
    ModelAndView view = new ModelAndView("/diary_list");
    TbUser user = (TbUser)session.getAttribute(SystemConstant.CURRENT_USER);
    //set info of current user
    if(user!=null){
      Integer id = user.getId();
      view.addObject("userId",id);
    }
    return view;
  }

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Use this userId as a query condition in the js in the page jsp file:

<script type="text/javascript">
    var path = '<%=basePath%>';
    var author=${userId};
    $(document).ready(function(){
      queryList();
    });
    function queryList(){
      $.ajax({
        type : 'POST',
        url : path+'queryDiaryList', //通过url传递name参数
        data : {
            author:author,
            page:_currentPage,
            pageSize:_pageSize,
            type:$("#queryType").val()
          },
        dataType : 'json',
        success:function(data){
          if(data.status){
            showTable(data.result);
            //调用分页插件，初始化分页p
            pageShow("queryList",data.ext.total);
          }else{
            alert(data.description);
          }
        },
        error:function(e){
          alert("Net error ,try later.");
        }
      });
    }
    </script>

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2 Method 2

【Effective? 】

Is the platform returning js or json? This must be clarified!

Assume that the string returned by the background is stored in responseText, then

If it is js, then

var result = eval("(" + responseText + ")");

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If it is json, then

var result = JSON.parse(responseText);

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3 Method Three [Effective]

Add hidden fields,

<input id="autoflag" type="hidden" value="${autoflag}">

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Easy for js to read

var passflag=document.getElementById("autoflag");

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I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the PHP Chinese website!