html - Check Id element javascript - 


var jewels = new array() var index var rand  var scard = [a1, a2, a3, b1, b2, b3, c1, c2, c3]      function generateboard() {          (var = 0; <= 8; i++) {             jewels[i] = new array();              var index = math.floor(math.random() * scard.length)             jewels[i] = scard[index]             console.log("i:" + + jewels[i])             var yy = scard.indexof(scard[index]);             scard.splice(yy, 1);         }     }      function drawboard() {          generateboard()         var html = '<div class=game_background>'          (var = 0; < 9; i++) {              rand = math.floor(math.random() * jewels.length)             html += '<div class="' + jewels[rand] + '" id="ship' + + '" style="top:' + ((i * 12) + 135) + 'px; left:245px;" ></div>'             jewels.splice(rand, 1);         }         var newarray = [a1, a2, a3, b1, b2, b3, c1, c2, c3]     }

here a1,a2,a3,b1,b2,b3,c1,c2,c3 css class.i use newarray because splice array items.now suppose element of ship2 id b3 , b3 positioned in newarray[5]. how check this(the id element positioned in number of index in array)?

<script type="text/javascript"> var jewels = new array() var index var rand  var scard = ["a1", "a2", "a3", "b1", "b2", "b3", "c1", "c2", "c3"]; var newarray = ["a1", "a2", "a3", "b1", "b2", "b3", "c1", "c2", "c3"];  drawboard();    function drawboard() {       var html = '<div class=game_background>'      (var = 0; < 9; i++) {          rand = math.floor(math.random() * scard.length);         html += '<div class="' + scard[rand] + '" id="ship' + + '" style="top:' + ((i * 12) + 135) + 'px; left:245px;" ></div>'         alert(newarray.indexof(scard[rand]));         scard.splice(rand, 1);     } }  </script>

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