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# YUI Library Examples: DataType Utility: DataType.Number.parse()

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## DataType Utility: DataType.Number.parse()

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

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Value to parse:

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

YUI().use("datatype-number", function(Y) { var output = Y.DataType.Number.parse("123123.123"); // output is the number 123123.123 }); 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: 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(new Date("Jan 1, 2000")); // output is 946713600000 });

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