* 扩展对象 * @return {Object}
()
| 350 | * @return {Object} |
| 351 | */ |
| 352 | extend() { |
| 353 | let src, copyIsArray, copy, name, options, clone, |
| 354 | target = arguments[0] || {}, |
| 355 | i = 1, |
| 356 | length = arguments.length, |
| 357 | deep = !1; |
| 358 | |
| 359 | if (typeof target === 'boolean') { |
| 360 | deep = target |
| 361 | target = arguments[i] || {} |
| 362 | i++ |
| 363 | } |
| 364 | |
| 365 | if (typeof target !== 'object' && !this.isFunction(target)) { |
| 366 | target = {} |
| 367 | } |
| 368 | |
| 369 | if (i === length) { |
| 370 | target = this |
| 371 | i-- |
| 372 | } |
| 373 | |
| 374 | for (; i < length; i++) { |
| 375 | if ((options = arguments[i]) != null) { |
| 376 | for (name in options) { |
| 377 | src = target[name] |
| 378 | copy = options[name] |
| 379 | |
| 380 | if (target === copy) { |
| 381 | continue |
| 382 | } |
| 383 | |
| 384 | if (deep && copy && (this.isPlainObject(copy) || (copyIsArray = this.isArray(copy)))) { |
| 385 | if (copyIsArray) { |
| 386 | copyIsArray = !1 |
| 387 | clone = src && this.isArray(src) ? src : [] |
| 388 | } else { |
| 389 | clone = src && this.isPlainObject(src) ? src : {} |
| 390 | } |
| 391 | target[name] = this.extend(deep, clone, copy) |
| 392 | } else if (copy !== undefined) { |
| 393 | target[name] = copy |
| 394 | } |
| 395 | } |
| 396 | } |
| 397 | } |
| 398 | return target |
| 399 | } |
| 400 | |
| 401 | /** |
| 402 | * 判断传入的参数是否为纯粹的对象，即直接量{}或new Object()创建的对象 |
no test coverage detected