<style scoped>

/* custom styles for this example */

#demo label {display:block;}

#demo fieldset {margin:1em;}

</style>

<div class="intro">

<p>The Number module of the DataType Utility allows you to take a data value and convert it to a number.</p>

</div>

<div class="example yui3-skin-sam">

{{>datatype-numberparse-source}}

</div>

<p>To convert a data value to a number, simply call the `parse()` function of the DataType.Number class:</p>

```

YUI().use("datatype-number", function(Y) {

var output = Y.DataType.Number.parse("123123.123");

// output is the number 123123.123

});

```

<p>Under the hood, the data value is converted to a number via `+data`, not `parseInt()`. When the resulting value is `NaN`, then null is returned:</p>

```

YUI().use("datatype-number", function(Y) {

var output = Y.DataType.Number.parse("$100");

// output is null

output = Y.DataType.Number.parse("20 dollars");

// output is null

output = Y.DataType.Number.parse("3,000,000.12");

// output is null (it's the commas)

output = Y.DataType.Number.parse(new Date("Jan 1, 2000"));

// output is 946713600000

});

```