html - Uncaught SyntaxError: Unexpected string in my Javascript code -


i keep getting error in code , don't understand why. see line 29 of javascript.

html

<link href="styles12.css"; type="text/css" rel="stylesheet"> <link rel="stylesheet" href="styles12.css"/> <script src="registration.js"></script> <body onload="studentattendance()">     <head>         <style>            table, td, th {                border: 1px solid black;            }             th {                 background-color: beige;                 color:black;             }         </style>     </head> <h3 style= "font-size:25px; font-family:impact"> add student</h3>

firstname:

lastname:

student number: 

    <button onclick = "save()"><p>+add attendance</a></p> </button>     <h2 style="font-size: 25px;font-family: impact">online attendance</h2>         <table id= "attendancetable">         <table border="10px">             <thead>                 <tr>                     <th> student name </th>                     <th> student number </th>                     <th> </th>                     <th> points </th>                     <th style="font-size:10px;font-align: left"><em><button> edit:add student(+)</a></button></em></th>                     </th>                  </tr>             </thead>     <tbody>         <tr>             <td></td>             <td></td>             <td><form action="demo_form.asp" method="get"></form></td>             <td></td>            <td> <input type="button" value="save"></input>         <button>reset</button></td>         </tr>         <tbody>             <tr>                 <td></td>                 <td></td>                 <td><form action="demo_form.asp" method="get"></form></td>                 <td></td>             </tr>             <tbody>                 <tr>                     <td></td>                     <td></td>                     <td><form action="demo_form.asp" method="get"></form></td>                     <td></td>                 </tr>             </tbody>         </table>      <form>     </form>      <button type="button" onlick="alert('attendence submitted')">  <strong>submit</strong></button>     <p id="demo"></p> </body>

javascript

var studentno = []; var index = 0; var studentinfo = []; var newobj = [];  function save() { //this function takes values text box , stores them object studentinfo[index] = { studentnumber: document.getelementbyid("studentno").value, firstname: document.getelementbyid("firstname").value, lastname: document.getelementbyid("lastname").value, }; index++;      localstorage.setitem("studentrecord", json.stringify(studentinfo)); }  function studentattendance() {     newobj = json.parse(localstorage.getitem("studentrecord"));     var table, row, cell1, cell2, cell3;     table = document.getelementbyid("onlineattendance");     studentinfo = json.parse(localstorage.getitem("studentrecord"));     (var index = 0; index < studentinfo.length; index++) {         row = table.insertrow(index + 1);         cell1 = row.insertcell(0);         cell2 = row.insertcell(1);         cell3 = row.insertcell(2);         cell4 = row.insertcell(3);         cell1.innerhtml = studentinfo[index].studentnumber;         cell2.innerhtml = studentinfo[index].firstname + " " +             studentinfo[index].lastname;         cell3.innerhtml = studentinfo[index].         '<input type="checkbox" name="student attendance" value="absent" id="checkboxab"</input>';      }      function save() {         if (document.getelementbyid('checkboxab').checked) {             alert("checked");         } else {             alert("you didnt check it")             studentinfo.points++         }     } }

. use in php concat string

+ use in javascript concat string

try 

cell3.innerhtml =studentinfo[index]+         '<input type="checkbox" name="student attendance" value="absent" id="checkboxab"</input>';

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