Function isNumber

front/wxcomponents/vant/common/utils.js:8–10

(value)

    return x !== null && (type === 'object' || type === 'function');
}
export function isNumber(value) {
    return /^\d+(\.\d+)?$/.test(value);
}
export function range(num, min, max) {
    return Math.min(Math.max(num, min), max);
}