ut2/lib/randomInt.js

一个现代 JavaScript 实用工具库。[点击查看在线文档]。

'use strict';

var native = require('./internals/native.js');
var toFinite = require('./toFinite.js');

function randomInt(lower, upper) {
    if (lower === void 0) { lower = 0; }
    if (upper === void 0) { upper = 1; }
    lower = toFinite(lower);
    upper = toFinite(upper);
    var min = native.mathCeil(native.mathMin(lower, upper) || 0);
    var max = native.mathFloor(native.mathMax(lower, upper) || 0);
    if (min > max) {
        var temp = min;
        min = max;
        max = temp;
    }
    return native.mathFloor(min + native.mathRandom() * (max - min + 1));
}

module.exports = randomInt;