JavaScript eval() Function
JavaScript Functions
Definition and Usage
The eval() function evaluates and/or executes a string of JavaScript code.
First, eval() determines if the argument is a valid string, then eval()
parses the string looking for JavaScript code. If it finds any JavaScript code,
it will be executed.
Syntax
| Parameter |
Description |
| string |
Optional. The string to be evaluated/executed |
Example
Example
Evaluate/Execute JavaScript code/expressions:
<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));
</script>
|
The output of the code above will be:
Try it yourself »
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JavaScript Functions

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