ut2/es/clamp.js

一个现代 JavaScript 实用工具库。[点击查看在线文档]。

import defaultTo from './defaultTo.js';
import { nativeUndefined } from './internals/native.js';
import toNumber from './toNumber.js';

var clamp = function (number, lower, upper) {
    if (upper === nativeUndefined) {
        upper = lower;
        lower = nativeUndefined;
    }
    if (upper !== nativeUndefined) {
        upper = defaultTo(toNumber(upper), 0);
    }
    if (lower !== nativeUndefined) {
        lower = defaultTo(toNumber(lower), 0);
    }
    number = toNumber(number);
    if (number === number) {
        if (upper !== nativeUndefined) {
            number = number <= upper ? number : upper;
        }
        if (lower !== nativeUndefined) {
            number = number >= lower ? number : lower;
        }
    }
    return number;
};

export { clamp as default };