JavaScript DHTML/Document/Eval
"eval()" Example
<html>
<body>
<script language="javascript">
function function1(){
var fullName = "Joe";
var mySentence = eval(""My name is " + fullName;");
alert(mySentence);
}
</script>
<button onclick="function1();">Eval function</button>
</body>
</html>
Use eval function to run statement dynamically
<html>
<head>
<title>A Simple Page</title>
<script language="JavaScript">
var num1, op, num2, ans;
num1 = 2;
op = "+";
num2 = 3;
ans = eval(Number(num1)+ op + Number(num2));
alert(num1 + " " + op + " " + num2 + " = " + ans);
</script>
</head>
<body>
</body>
</html>