Question

js 获取div值并输出

<div class="UserEvaluation" title="评价分数">
<div class="bg"><div class="qg" id="qg"></div></div>
<code id="ppjf">8.8</code></div>

我要用JS获取ID=ppjf的值:8.8 并8.8*10结果输出到id=qg的div中
8.8*10结果不是输出到id=qg的div中。是id=qg的div的宽度
应该怎么写

Answer 1

<div class="UserEvaluation" title="评价分数">
<div class="bg"><div class="qg" id="qg"></div></div>
<code id="ppjf">8.8</code></div>
<script>
var n=document.getElementById("ppjf").innerText;
document.getElementById("qg").style.width=(n*10)+"px";
</script>

Answer 2

<div class="UserEvaluation" title="评价分数">
<div class="bg"><div class="qg" id="qg"></div></div>
<code id="ppjf">8.8</code></div>

<script type="text/javascript">
var a;
a=document.getElementById('ppjf').innerHTML;
document.getElementById('qg').style.height=a*10;
</script>

Answer 3

var ppjf = Number(document.getElementById('ppjf').innerHTML);
if(!isNaN(ppjf)) {
document.getElementById('qg').style.width = ppjf * 10 + 'px';
}