js判断非负数字

function isNonNegativeNumber(value) {
    return typeof value === 'number' && value >= 0;
}

// 示例
console.log(isNonNegativeNumber(10)); // true
console.log(isNonNegativeNumber(-5)); // false
console.log(isNonNegativeNumber(0));  // true
console.log(isNonNegativeNumber('10')); // false

function isNonNegativeNumber(value) {
    return /^-?\d+(\.\d+)?$/.test(value) && parseFloat(value) >= 0;
}

// 示例
console.log(isNonNegativeNumber('10')); // true
console.log(isNonNegativeNumber('-5')); // false
console.log(isNonNegativeNumber('0'));  // true
console.log(isNonNegativeNumber('abc')); // false

function isNonNegativeNumber(value) {
    return Number.isFinite(value) && value >= 0;
}

// 示例
console.log(isNonNegativeNumber(10)); // true
console.log(isNonNegativeNumber(-5)); // false
console.log(isNonNegativeNumber(0));  // true
console.log(isNonNegativeNumber(NaN)); // false
console.log(isNonNegativeNumber(Infinity)); // false