JavaScript eval() Function
 JavaScript Functions
Definition and Usage
The eval() function evaluates a string and executes it as if it was script code.
Syntax
| Parameter |
Description |
| string |
Required. The string to be evaluated |
Example
Example
In this example we use eval() on some strings and see what it returns:
<script type="text/javascript">
eval("x=10;y=20;document.write(x*y)");
document.write("<br />" + eval("2+2"));
document.write("<br />" + eval(x+17));
eval("alert('Hello world')");
</script>
|
The output of the code above will be:
Try it yourself »
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JavaScript Functions
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