超过位数的直接截取,不采用四舍五入
例如
2 → 2.00
2.3 → 2.30
2.321 → 2.32
2.328 → 2.32
代码如下:
function changeTwoDecimal_f(x) { var f_x = parseFloat(x); if (isNaN(f_x)) { return 0; } var f_x = Math.round(x*100)/100; var s_x = f_x.toString(); var pos_decimal = s_x.indexOf(‘.‘); if (pos_decimal < 0) { pos_decimal = s_x.length; s_x += ‘.‘; } while (s_x.length <= pos_decimal + 2) { s_x += ‘0‘; } return s_x; }
时间: 2024-10-11 00:58:09