| 提交 | 用户 | age | ||
| 53cc6f | 1 | export function isFunction(val) { |
| S | 2 | return typeof val === 'function'; |
| 3 | } | |
| 4 | export function isPlainObject(val) { | |
| 5 | return val !== null && typeof val === 'object' && !Array.isArray(val); | |
| 6 | } | |
| 7 | export function isPromise(val) { | |
| 8 | return isPlainObject(val) && isFunction(val.then) && isFunction(val.catch); | |
| 9 | } | |
| 10 | export function isDef(value) { | |
| 11 | return value !== undefined && value !== null; | |
| 12 | } | |
| 13 | export function isObj(x) { | |
| 14 | const type = typeof x; | |
| 15 | return x !== null && (type === 'object' || type === 'function'); | |
| 16 | } | |
| 17 | export function isNumber(value) { | |
| 18 | return /^\d+(\.\d+)?$/.test(value); | |
| 19 | } | |
| 20 | export function isBoolean(value) { | |
| 21 | return typeof value === 'boolean'; | |
| 22 | } | |
| 23 | const IMAGE_REGEXP = /\.(jpeg|jpg|gif|png|svg|webp|jfif|bmp|dpg)/i; | |
| 24 | const VIDEO_REGEXP = /\.(mp4|mpg|mpeg|dat|asf|avi|rm|rmvb|mov|wmv|flv|mkv)/i; | |
| 25 | export function isImageUrl(url) { | |
| 26 | return IMAGE_REGEXP.test(url); | |
| 27 | } | |
| 28 | export function isVideoUrl(url) { | |
| 29 | return VIDEO_REGEXP.test(url); | |
| 30 | } | |
