数字工具类详解编程语言

* @param thousandsMark 千位符号 * @param roundMode 舍入参数，默认 "ceil" 向上取,"floor"向下取,"round" 四舍五入 * @return {string} numberFormat: function (number, decimals, decPoint, thousandsMark, roundMode) { number = (number + ).replace(/[^0-9+-Ee.]/g, ); roundMode = roundMode || "ceil"; //"ceil","floor","round" var n = !isFinite(+number) ? 0 : +number, prec = !isFinite(+decimals) ? 0 : Math.abs(decimals), sep = (typeof thousandsMark === undefined) ? , : thousandsMark, dec = (typeof decPoint === undefined) ? . : decPoint, s = , toFixedFix = function (n, prec) { var k = Math.pow(10, prec); console.log(); return + parseFloat(Math[roundMode](parseFloat((n * k).toFixed(prec * 2))).toFixed(prec * 2)) / k; s = (prec ? toFixedFix(n, prec) : + Math.round(n)).split(.); var re = /(-?/d+)(/d{3})/; while (re.test(s[0])) { s[0] = s[0].replace(re, "$1" + sep + "$2"); if ((s[1] || ).length prec) { s[1] = s[1] || ; s[1] += new Array(prec - s[1].length + 1).join(0); return s.join(dec); }

原创文章，作者：Maggie-Hunter，如若转载，请注明出处：https://blog.ytso.com/18088.html

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