javascript - How to change the value of a JSON data while diplaying in a list? -

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i getting data database key value pairs , trying populate values in list view. while looping change value of data (item.student_class) 'your next class 2' if value class1. when try below, changes values in list.

 var buffer="";   $.each(data, function(index, val){                 for(var i=0; < val.length; i++){                 var item = val[i];  //if student's class class1, change value below     if(item.student_class= 'class1'){var studentclass='your next class 2';}   buffer+='<li id="' + item.student_id+ '" data-student_class="'+studentclass+'"><a href="#"><b>' + item.student_name+'</b><span class="af-badge" style="background-color:#4a4">'+studentclass+'</span><br/>'+item.join_date+'</a></li>';               }        $('#student_list').html(buffer); });

could please me how can acheive ?

fix conditional not assignment. initializing variable inside condition , might undefined in cases. set "" first: i.e.

var buffer = ""; $.each(data, function (index, val) {     (var = 0; < val.length; i++) {         var studentclass = "";         var item = val[i];         //if student's class class1, change value below         if (item.student_class == 'class1') {             studentclass = 'your next class 2';         }         buffer += '<li id="' + item.student_id + '" data-student_class="' + studentclass + '"><a href="#"><b>' + item.student_name + '</b><span class="af-badge" style="background-color:#4a4">' + studentclass + '</span><br/>' + item.join_date + '</a></li>';     }     $('#student_list').html(buffer); });

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