用於動態顯示選中個數的div
<div id="number" style="padding:10px">已選0道多選題</div>
複選框代碼:
<input type="checkbox" name="qId" value="1" onclick="doit();"/>
<input type="checkbox" name="qId" value="2" onclick="doit();"/>
<input type="checkbox" name="qId" value="3" onclick="doit();"/>
<input type="checkbox" name="qId" value="4" onclick="doit();"/>
js代碼:
<script type="text/javascript">
function doit()
{
var n=0;
var objs = document.getElementsByName("qId");
for(var i=0; i<objs.length; i++)
{
if(objs[i].checked)
{
n++;
}
}
document.getElementById("number").innerText="已選"+n+"道多選題";
}
</script>