number to money style

moneyFormat.js

define( function ( require, exports, module ) {
    
    /**
     * 货币数字格式化
     * 将数字整数部分按3位分组加逗号格式化
     * 
     * @example
     * ```javascript
     * var money = 123456789.1234567;
     * var moneyFormated = toMoney( money );
     * console.info( 'format from `%s` to `%s`', money, moneyFormated );
     * // output: format from `123456789.1234567` to `123,456,789.1234567`
     * ```
     * @param {number|string} number 待格式化的数字
     * @return {string} 格式化后的字符串
     */
    function toMoney ( number, group ) {
        return number.toString().replace( /\B(?=(\d{3})+(?:\.\d+$))/g, ',' ); 
    }

    return toMoney;

} );