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# How to check whether a value is numeric or not in jQuery

Topic: JavaScript / jQuery

## Answer: Use the `jQuery.isNumeric()` method

You can use the jQuery `\$.isNumeric()` method to check whether a value is numeric or a number.

The `\$.isNumeric()` returns `true` only if the argument is of type number, or if it's of type string and it can be coerced into finite numbers, otherwise it returns `false`.

Let's take a look at the following example to understand how it basically works:

#### Example

Try this code »
``````<script>
// Return true (numeric)
\$.isNumeric("-10")
\$.isNumeric("0")
\$.isNumeric(0xFF) /* Hexadecimal notation (0xFF represents the number 255) */
\$.isNumeric("0xFF")
\$.isNumeric(+10)
\$.isNumeric(1.25e2) /* Exponential notation (1.25e2 represents the number 125) */
\$.isNumeric("1.25e2")
\$.isNumeric("13.417")
\$.isNumeric(0144)
\$.isNumeric(-0x56)

// Return false (non-numeric)
\$.isNumeric("-0x52")
\$.isNumeric("7.2xyz")
\$.isNumeric("")
\$.isNumeric({})
\$.isNumeric(NaN)
\$.isNumeric(null)
\$.isNumeric(true)
\$.isNumeric(Infinity)
\$.isNumeric(undefined)
</script>``````

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