All files / num comma.js

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/**
 * 数字的千分位逗号分隔表示法
 * - IE8 的 toLocalString 给出了小数点后2位: N.00
 * @method num/comma
 * @see http://stackoverflow.com/questions/2901102/how-to-print-a-number-with-commas-as-thousands-separators-in-javascript
 * @param {Number} num 数字
 * @returns {String} 千分位表示的数字
 * @example
 * var $comma = require('@spore-ui/kit/packages/num/comma');
 * $comma(1234567); //'1,234,567'
 */
 
function comma(num) {
  var parts = num.toString().split('.');
  parts[0] = parts[0].replace(/\B(?=(\d{3})+(?!\d))/g, ',');
  return parts.join('.');
}
 
module.exports = comma;