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WTFAcademy · Sep 9, 2023 · f29e11e · f29e11e
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diff --git a/01_HelloVitalik/readme.md b/01_HelloVitalik/readme.md
@@ -1,5 +1,12 @@
 ---
 title: 1. HelloVitalik (6行代码)
+tags:
+  - ethers
+  - javascript
+  - ens
+  - vitalik
+  - frontend
+  - web
 ---
 
 # Ethers极简入门: 1. HelloVitalik (6行代码)

diff --git a/02_Provider/readme.md b/02_Provider/readme.md
@@ -1,5 +1,11 @@
 ---
 title: 2. 提供器 Provider
+tags:
+  - ethers
+  - javascript
+  - provider
+  - frontend
+  - web
 ---
 
 # Ethers极简入门: 2. Provider 提供器
@@ -58,9 +64,9 @@ const providerGoerli = new ethers.JsonRpcProvider(`https://goerli.infura.io/v3/$
     const balance = await providerETH.getBalance(`vitalik.eth`);
     const balanceGoerli = await providerGoerli.getBalance(`vitalik.eth`);
     // 将余额输出在console（主网）
-    console.log(`ETH Balance of vitalik: ${ethers.utils.formatEther(balance)} ETH`);
+    console.log(`ETH Balance of vitalik: ${ethers.formatEther(balance)} ETH`);
     // 输出Goerli测试网ETH余额
-    console.log(`Goerli ETH Balance of vitalik: ${ethers.utils.formatEther(balanceGoerli)} ETH`);
+    console.log(`Goerli ETH Balance of vitalik: ${ethers.formatEther(balanceGoerli)} ETH`);
 ```
 
 ![V神余额](img/2-2.png)

diff --git a/03_ReadContract/readme.md b/03_ReadContract/readme.md
@@ -1,5 +1,12 @@
 ---
 title: 3. 读取合约信息
+tags:
+  - ethers
+  - javascript
+  - provider
+  - contract
+  - frontend
+  - web
 ---
 
 # Ethers极简入门: 3. 读取合约信息

diff --git a/04_SendETH/readme.md b/04_SendETH/readme.md
@@ -1,5 +1,13 @@
 ---
 title: 4. 发送ETH
+tags:
+  - ethers
+  - javascript
+  - provider
+  - wallet
+  - contract
+  - frontend
+  - web
 ---
 
 # Ethers极简入门: 4. 发送ETH

diff --git a/05_WriteContract/readme.md b/05_WriteContract/readme.md
@@ -1,5 +1,13 @@
 ---
 title: 5. 合约交互
+tags:
+  - ethers
+  - javascript
+  - provider
+  - wallet
+  - contract
+  - frontend
+  - web
 ---
 
 # Ethers极简入门: 5. 合约交互

diff --git a/06_DeployContract/readme.md b/06_DeployContract/readme.md
@@ -1,5 +1,14 @@
 ---
 title: 6. 部署合约
+tags:
+  - ethers
+  - javascript
+  - provider
+  - wallet
+  - contract
+  - create
+  - frontend
+  - web
 ---
 
 # Ethers极简入门: 6. 部署合约

diff --git a/07_Event/readme.md b/07_Event/readme.md
@@ -1,5 +1,12 @@
 ---
 title: 7. 检索事件
+tags:
+  - ethers
+  - javascript
+  - provider
+  - event
+  - frontend
+  - web
 ---
 
 # Ethers极简入门: 7. 检索事件

diff --git a/08_ContractListener/readme.md b/08_ContractListener/readme.md
@@ -1,5 +1,13 @@
 ---
 title: 8. 监听合约事件
+tags:
+  - ethers
+  - javascript
+  - provider
+  - event
+  - listener
+  - frontend
+  - web
 ---
 
 # Ethers极简入门: 8. 监听合约事件

diff --git a/09_EventFilter/readme.md b/09_EventFilter/readme.md
@@ -1,5 +1,12 @@
 ---
 title: 9. 事件过滤
+tags:
+  - ethers
+  - javascript
+  - event
+  - filter
+  - frontend
+  - web
 ---
 
 # Ethers极简入门: 9. 事件过滤

diff --git a/10_Units/readme.md b/10_Units/readme.md
@@ -1,8 +1,16 @@
 ---
-title: 10. BigNumber和单位转换
+title: 10. BigInt和单位转换
+tags:
+  - ethers
+  - javascript
+  - bigint
+  - parseUnits
+  - formatUnits
+  - frontend
+  - web
 ---
 
-# Ethers极简入门: 10. BigNumber和单位转换
+# Ethers极简入门: 10. BigInt和单位转换
 
 我最近在重新学`ethers.js`，巩固一下细节，也写一个`WTF Ethers极简入门`，供小白们使用。
 
@@ -16,7 +24,7 @@ title: 10. BigNumber和单位转换
 
 提示：本教程基于ethers.js 6.3.0 ，如果你使用的是v5，可以参考[ethers.js v5文档](https://docs.ethers.io/v5/)。
 
-这一讲，我们介绍`BigNumber`类和单位转换。
+这一讲，我们介绍`BigInt`类和单位转换。
 
 ## `BigInt`
 

diff --git a/11_StaticCall/readme.md b/11_StaticCall/readme.md
@@ -1,5 +1,11 @@
 ---
 title: 11. StaticCall
+tags:
+  - ethers
+  - javascript
+  - staticcall
+  - frontend
+  - web
 ---
 
 # Ethers极简入门: 11. StaticCall

diff --git a/12_ERC721Check/readme.md b/12_ERC721Check/readme.md
@@ -1,5 +1,13 @@
 ---
 title: 12. 识别ERC721合约
+tags:
+  - ethers
+  - javascript
+  - erc165
+  - erc721
+  - selector
+  - frontend
+  - web
 ---
 
 # Ethers极简入门: 12. 识别ERC721合约

diff --git a/13_EncodeCalldata/readme.md b/13_EncodeCalldata/readme.md
@@ -1,5 +1,12 @@
 ---
 title: 13. 编码calldata
+tags:
+  - ethers
+  - javascript
+  - encode
+  - calldata
+  - frontend
+  - web
 ---
 
 # Ethers极简入门: 13. 编码calldata

diff --git a/14_HDwallet/readme.md b/14_HDwallet/readme.md
@@ -1,5 +1,15 @@
 ---
 title: 14. 批量生成钱包
+tags:
+  - ethers
+  - javascript
+  - wallet
+  - hdwallet
+  - bip32
+  - bip44
+  - bip39
+  - frontend
+  - web
 ---
 
 # Ethers极简入门: 14. 批量生成钱包

diff --git a/15_MultiTransfer/readme.md b/15_MultiTransfer/readme.md
@@ -1,5 +1,11 @@
 ---
 title: 15. 批量转账
+tags:
+  - ethers
+  - javascript
+  - multitransfer
+  - frontend
+  - web
 ---
 
 # Ethers极简入门: 15. 批量转账

diff --git a/16_MultiCollect/readme.md b/16_MultiCollect/readme.md
@@ -1,5 +1,11 @@
 ---
 title: 16. 批量归集
+tags:
+  - ethers
+  - javascript
+  - collect
+  - frontend
+  - web
 ---
 
 # Ethers极简入门: 16. 批量归集

diff --git a/17_MerkleTree/readme.md b/17_MerkleTree/readme.md
@@ -1,5 +1,12 @@
 ---
 title: 17. MerkleTree脚本
+tags:
+  - ethers
+  - javascript
+  - airdrop
+  - merkletree
+  - frontend
+  - web
 ---
 
 # Ethers极简入门: 17. MerkleTree脚本

diff --git a/18_Signature/readme.md b/18_Signature/readme.md
@@ -1,5 +1,13 @@
 ---
 title: 18. 数字签名脚本
+tags:
+  - ethers
+  - javascript
+  - airdrop
+  - signature
+  - ecdsa
+  - frontend
+  - web
 ---
 
 # Ethers极简入门: 18. 数字签名脚本

diff --git a/19_Mempool/readme.md b/19_Mempool/readme.md
@@ -1,5 +1,13 @@
 ---
 title: 19. 监听Mempool
+tags:
+  - ethers
+  - javascript
+  - mempool
+  - mev
+  - pending
+  - frontend
+  - web
 ---
 
 # Ethers极简入门: 19. 监听Mempool

diff --git a/20_DecodeTx/readme.md b/20_DecodeTx/readme.md
@@ -1,5 +1,12 @@
 ---
 title: 20. 解码交易详情
+tags:
+  - ethers
+  - javascript
+  - decode
+  - interface
+  - frontend
+  - web
 ---
 
 # Ethers极简入门: 20. 解码交易详情

diff --git a/21_VanityAddress/readme.md b/21_VanityAddress/readme.md
@@ -1,5 +1,12 @@
 ---
 title: 21. 靓号生成器
+tags:
+  - ethers
+  - javascript
+  - vanity
+  - address
+  - frontend
+  - web
 ---
 
 # Ethers极简入门: 21. 靓号生成器

diff --git a/22_ReadAnyData/readme.md b/22_ReadAnyData/readme.md
@@ -1,5 +1,12 @@
 ---
 title: 22. 读取任意数据
+tags:
+  - ethers
+  - javascript
+  - read
+  - slot
+  - frontend
+  - web
 ---
 
 # Ethers极简入门: 22. 读取任意数据

diff --git a/23_Frontrun/readme.md b/23_Frontrun/readme.md
@@ -1,5 +1,14 @@
 ---
 title: 23. 抢先交易脚本
+tags:
+  - ethers
+  - javascript
+  - mev
+  - mempool
+  - frontrun
+  - nft
+  - frontend
+  - web
 ---
 
 # Ethers极简入门: 23. 抢先交易脚本

diff --git a/24_ERC20Check/readme.md b/24_ERC20Check/readme.md
@@ -1,5 +1,13 @@
 ---
 title: 24. 识别ERC20合约
+tags:
+  - ethers
+  - javascript
+  - erc20
+  - token
+  - selector
+  - frontend
+  - web
 ---
 
 # Ethers极简入门: 24. 识别ERC20合约

diff --git a/25_Flashbots/readme.md b/25_Flashbots/readme.md
@@ -1,5 +1,13 @@
 ---
 title: 25. Flashbots
+tags:
+  - ethers
+  - javascript
+  - mev
+  - flashbots
+  - bundle
+  - frontend
+  - web
 ---
 
 # Ethers极简入门: 25. Flashbots
@@ -106,7 +114,7 @@ npm install --save @flashbots/ethers-provider-bundle
     chainId: CHAIN_ID,
     type: 2,
     to: "0x25df6DA2f4e5C178DdFF45038378C0b08E0Bce54",
-    value: ethers.utils.parseEther("0.001"),
+    value: ethers.parseEther("0.001"),
     maxFeePerGas: GWEI * 100n
     }
     ```

diff --git a/26_EIP712/readme.md b/26_EIP712/readme.md
@@ -1,5 +1,13 @@
 ---
 title: 26. EIP712 签名脚本
+tags:
+  - ethers
+  - javascript
+  - eip712
+  - signature
+  - airdrop
+  - frontend
+  - web
 ---
 
 # Ethers极简入门: 26. EIP712 签名脚本