js怎么样删除指定内容的a标签啊
<a href="#" class="tagtitle" title="11" >11</a>
<a href="#" class="tagtitle" title="12" >12</a>
<a href="#" class="tagtitle" title="13" >13</a>
<a href="#" class="tagtitle" title="14" >14</a>
<script>
var leng=document.getElementsByClassName('tagtitle').length;
var a=document.getElementsByClassName('tagtitle');
for (var i = 0; i < leng; i++) {
if(a[i].innerHTML=="12"){
}else{
a[i].innerHTML="";
}
}
</script>
我想把内容不等于12的a标签都删了,需要怎么修改啊