How to add style in dynamically created span

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I want to add style to

my code is

HTML

<pre lang="HTML">
<!DOCTYPE html>
<html>
<head>
<script type=text/javascript>
function aa()
{
var ff="#00FF00"
 
var innerhtml="<table><tr><td><span id='spn'></span></td></tr><table>"
document.getElementById('demo').innerHTML=innerhtml;
}
</script>
</head>
<body>


<button type="button"
onclick="aa()"></button>

<p id="demo"></p>

</body>
</html>

What I have tried:

JavaScript

var ff="#00FF00"
 
var innerhtml="<table><tr><td><span  style='background-color:'+"+ff+"></span></td></tr></table>";

Posted 22-Mar-16 23:15pm

Member 7909353

Updated 22-Mar-16 23:24pm

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Member 7909353 · Accepted Answer · 2016-03-22T23:24:00

Solution 1

JavaScript

var ff="#00FF00"

var innerhtml="<table><tr><td><span style='background-color:"+ff+"'></span></td></tr></table>";

Posted 22-Mar-16 23:24pm

Member 7909353

Updated 22-Mar-16 23:25pm

v3