微信小程序--数据缓存API整理

1、wx.getStorage(OBJECT)

 

从本地缓存中异步获取指定 key 对应的内容

1. [javascript] view plain copy
2. wx.getStorage({
3. key: 'key',
4. success: function(res) {
5. console.log(res.data)
6. } ,
7. fail: function(){},
8. complete: function(){}
9. })

2、wx.setStorageSync(KEY,DATA)

 

将 data 存储在本地缓存中指定的 key 中，会覆盖掉原来该 key 对应的内容，这是一个同步接口

1. [javascript] view plain copy
2. try {
3. wx.setStorageSync('key', 'value')
4. } catch (e) {
5. }

3、wx.getStorage(OBJECT)

 

从本地缓存中异步获取指定 key 对应的内容

1. [javascript] view plain copy
2. wx.getStorage({
3. key: 'key',
4. success: function(res) {
5. console.log(res.data)
6. },
7. fail: function(){},
8. complete: function(){}
9. })

4、wx.getStorageSync(KEY)

 

从本地缓存中同步获取指定 key 对应的内容

1. [javascript] view plain copy
2. try {
3. var value = wx.getStorageSync('key')
4. if (value) {
5. // Do something with return value
6. }
7. } catch (e) {
8. // Do something when catch error
9. }

5、wx.getStorageInfo(OBJECT)

 

异步获取当前storage的相关信息

1. [javascript] view plain copy
2. wx.getStorageInfo({
3. success: function(res) {
4. console.log(res.keys)
5. console.log(res.currentSize)
6. console.log(res.limitSize)
7. },
8. fail: function(){},
9. complete: function(){}
10. })

6、wx.getStorageInfoSync

 

同步获取当前storage的相关信息

1. [javascript] view plain copy
2. try {
3. var res = wx.getStorageInfoSync()
4. console.log(res.keys)
5. console.log(res.currentSize)
6. console.log(res.limitSize)
7. } catch (e) {
8. // Do something when catch error
9. }

7、wx.removeStorage(OBJECT)

 

从本地缓存中异步移除指定 key

1. [javascript] view plain copy
2. wx.removeStorage({
3. key: 'key',
4. success: function(res) {
5. console.log(res.data)
6. },
7. fail: function(){},
8. complete: function(){}
9. })

8、wx.removeStorageSync(KEY)

 

从本地缓存中同步移除指定 key

1. [javascript] view plain copy
2. try {
3. wx.removeStorageSync('key')
4. } catch (e) {
5. // Do something when catch error
6. }

9、wx.clearStorage()

 

清理本地数据缓存

1. [javascript] view plain copy
2. wx.clearStorage()
3. 10、wx.clearStorageSync()
4. 同步清理本地数据缓存
5. [javascript] view plain copy
6. try {
7. wx.clearStorageSync()
8. } catch(e) {
9. // Do something when catch error
10. }

本地数据缓存大小限制为10MB。