| 1343 | * 实例化 dep对象,获取dep对象 为 value添加__ob__ 属性 |
| 1344 | */ |
| 1345 | var Observer = function Observer(value) { |
| 1346 | |
| 1347 | |
| 1348 | this.value = value; |
| 1349 | this.dep = new Dep(); |
| 1350 | this.vmCount = 0; |
| 1351 | //设置监听 value 必须是对象 |
| 1352 | def(value, '__ob__', this); |
| 1353 | if (Array.isArray(value)) { //判断是不是数组 |
| 1354 | var augment = hasProto //__proto__ 存在么 高级浏览器都会有这个 |
| 1355 | ? protoAugment |
| 1356 | : copyAugment; |
| 1357 | augment(value, arrayMethods, arrayKeys); |
| 1358 | this.observeArray(value); |
| 1359 | } else { |
| 1360 | this.walk(value); |
| 1361 | } |
| 1362 | }; |
| 1363 | |
| 1364 | /** |
| 1365 | * Walk through each property and convert them into |