这是使用javascript设置选择/选项框的最有效方法吗? [英] Is this most efficient way of setting a select/option box with javascript?

问题描述

这是使用javascript设置选择/选项框的最有效方法吗?

Is this most efficient way of setting a select/option box with javascript?

<select id='sel_activity'>
<option value='CYC'>Cycle Count</option>
<option value='INV'>Inventory Count</option>
<option value='INVDROP'>Inventory Drop off</option>
<option value='INVPICK'>Inventory Pick up</option>
<option value='TRAIN'>Training</option>
</select>

<script type="text/javascript">

var select = 'CYC';
var myselect=document.getElementById("sel_activity")
for (var i=0; i<myselect.options.length; i++){
 if (myselect.options[i].value == select)
 {
 myselect.options[i].selected = true;
 }
 else
 {
 myselect.options[i].selected = false;
 } 
} 
</script>

推荐答案

只要您的值是唯一的，就可以使用document.getElementById("sel_activity").value='CYC'代替

as long as your values are unique, you can use document.getElementById("sel_activity").value='CYC' instead

这篇关于这是使用javascript设置选择/选项框的最有效方法吗?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！