javascript 按钮事件

keyevent

<script type="text/javascript">
$(document).ready(function(){  
  $("input").keypress(function (e) {
     var keyCode = e.keyCode ? e.keyCode : e.which ? e.which : e.charCode;
     if (keyCode == 13){    
      var i;
      for (i = 0; i < this.form.elements.length; i++)
        if (this == this.form.elements[i])
          break;
      i = (i + 1) % this.form.elements.length;
      this.form.elements[i].focus();
      return false;
     } 
     else
     return true;
   });  
});
</script>

JavaScript表单enter控制