diff --git a/README.md b/README.md
index 8e98935..20bc591 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,11 @@
 # Ethername Smart Contract ([ethername.co](https://ethername.co))
 > It is designed for any DAPPs to have username feature without extra implementation.
 
+## Examples
+These sample files are offered for tests only. I am not responsible for misused outcomes.
+* examples/ethername.0.1.1.js (example code)
+* examples/ethername.1.0.1.zip (SPA use case)
+
 ## Running the tests
 
 ### Prerequisites
diff --git a/examples/ethername.0.1.1.js b/examples/ethername.0.1.1.js
new file mode 100644
index 0000000..1650beb
--- /dev/null
+++ b/examples/ethername.0.1.1.js
@@ -0,0 +1,58 @@
+// All you need to know: abi, addr
+let enm = {
+  abi: [{"constant":true,"inputs":[{"name":"_address","type":"address"}],"name":"nameOf","outputs":[{"name":"_name","type":"string"}],"payable":false,"stateMutability":"view","type":"function"}],
+  addr: {
+    1: '0x397c7f9c38e09b7024063e6879d45b58e5effdbf',
+    3: '0x41fd31c43be1373280b9d622efedf2518921deae'
+  }
+}
+
+// set test function
+enm.test = (_name) => {
+  if (_name === '') {
+    if (window.confirm('You have no name. Click "OK" to go Ethername for registration!')) 
+    {
+      window.location.href='https://ethername.co'
+    }
+  } else {
+    alert(`Hello, ${_name}!`)
+  }
+}
+
+// set examples by web3js version
+enm.example = {
+  ver1: async (_enm) => {
+    let _netId = await window.web3.eth.net.getId() // get network id
+    _enm.contract = new web3.eth.Contract(_enm.abi, _enm.addr[_netId]) // set contract
+    let _userAddr = await window.web3.eth.getAccounts() // get current user address
+    let _name = await _enm.contract.methods.nameOf(_userAddr[0]).call() // call nameOf API
+    _enm.test(_name) // test
+  },
+  ver0: (_enm) => {
+    window.web3.version.getNetwork((err, _netId) => { // get network id
+      _enm.contract = web3.eth.contract(_enm.abi).at(_enm.addr[_netId]) // set contract
+      window.web3.eth.getAccounts((err, res) => { // get current user address
+        _enm.contract.nameOf.call(res[0], (err, res) => { // call nameOf API
+          if (err) return error(err)
+          _enm.test(res) // test
+        })
+      })
+
+    })
+  }
+}
+
+// set call function
+enm.call = () => {
+  // check web3js version
+  if (typeof window.web3 !== 'undefined') {
+    let _verWeb3 = web3.version
+    if (typeof _verWeb3 === 'string' && _verWeb3[0] === '1') {
+      enm.example.ver1(enm)
+    } else {
+      enm.example.ver0(enm)
+    }
+  }
+}
+
+enm.call()
diff --git a/examples/ethername.1.0.1.zip b/examples/ethername.1.0.1.zip
new file mode 100644
index 0000000..27f63f0
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