Version 3.5.1

Example: DataType.Number.format()

The Number module of the DataType Utility allows you to take a number and format it into a string with the following configuration parameters: decimalPlaces, decimalSeparator, thousandsSeparator, prefix, and suffix. Although this method allows you to specify HTML values, in this example the formatted output will be escaped for security.

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To output a number as a string, simply call the format() function of the DataType.Number class:

YUI().use("datatype-number", function(Y) {
    alert(Y.DataType.Number.format(123123123));

    // This alerts the string "123123123"
});
The format() function also takes a variety of configuration parameters that manipulate the value of the string. This is helpful, for instance, when displaying numbers as currency: 
YUI().use("datatype-number", function(Y) {
    alert(Y.DataType.Number.format(123123123.176,{
        prefix: "¥",
        thousandsSeparator: ".",
        decimalSeparator: ",",
        decimalPlaces: 2,
        suffix: " (YEN)"
    }));

    // This alerts the string "¥123.123.123,18 (YEN)"
});

Note: Although this method allows you to specify HTML values, in this example the formatted output will be escaped for security.