I want the pattern printing using Javascript -

for given number n, print grid shown below using javascript, n positive integer greater 2.

example output n=3

1 1 1

1 0 1

1 1 1

example output n=4

1 1 1 1

1 0 0 1

1 0 0 1

1 1 1 1

function printmatrix(n) {      (var = 0; i<n; i++) {    var x = "";    	for (var j = 0; j <n; j++) {        if (i == 0 || == (n-1)) {          x += "1";        } else {          if (j == 0 || j == (n-1) ) {            x +="1";          } else {            x += "0";          }        }      }      $("#result").append(x + "<br>");    }    }  $("#btn").click(function() {    $("#result").empty();  printmatrix($("#index").val());      })

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>  <input type='number' id='index'>  <input type='button' value='print' id='btn'>  <div id="result">    </div>

even if didn't try anything, there working solution :

function printmatrix(n) {    (var = 0; i<n; i++) {   var x = "";     (var j = 0; j <n; j++) {       if (i == 0 || == (n-1)) {         x += "1";       } else {         if (j == 0 || j == (n-1) ) {           x +="1";         } else {           x += "0";         }       }     }     $("#result").append(x + "<br>");   }  }  printmatrix(5); 

you can improve easily

here jsfiddle