# Near DApps Integration

## To detect MapNode Extension with Near

To detect whether your browser is running MapNode Extension, please use:

```javascript
if(window.mapnode || window.mapnode.near || window.near?.isMapNode){
    console.log('MapNode Extension is installed!');›
}
```

Notice: MapNode Extension Testnet is under development and not available now.

Support `window.near only` and removal `window.web3`

***

## To connect MapNode Extension Wallet

To connect MapNode Extension means to access the user's \[blockchain - like Near] account(s).

```javascript
// Connect DApps
window.MapNode.near.connect(<Prefix: optional>,<Contract ID: optional>);
// Get Account
window.MapNode.near.selectedAddress;
// Get Full Accounts State
window.MapNode.near.request({ method: 'near_accountState' });
// Check if DApps connected
window.MapNode.near.isConnected();
```

***

## To disconnect MapNode Extension Wallet

To disconnect MapNode Extension, please use:

```
window.MapNode.near.disconnect()
```

## To experience functions

Once your account is connected, let's start experiencing more functions.‌

### Call View Method

```javascript
const params = {
    contractId: 'token.v2.ref-finance.near',
    method: 'ft_balance_of',
    args: {
        account_id: account
    }
}
const balance = await window.MapNode?.near.request({method: 'near_view', params})
console.log("Your near wallet balance ", balance)
```

### SignAndSend Transaction

```javascript
const params = {
    transactions,
    receiver: account
}

const result = await window.MapNode?.near.request({method: 'near_signAndSendTransaction', params})
const balance = await window.MapNode?.near.request({method: 'near_view', params})
console.log("Your near wallet balance ", balance)
```

## To handle events

### List of events

Currently we only support some action event from wallet extension

```javascript
window.mapnode.sol.on('event_name', callback);
​//Example
window.mapnode.sol.on('close', () => window.location.reload());
window.mapnode.sol.on('accountsChanged', () => window.location.reload());
```

<table><thead><tr><th width="184.0317835309541">Events</th><th>Trigger</th></tr></thead><tbody><tr><td>accountsChanged</td><td>Receive when active account changed in Extension</td></tr><tr><td>networkChanged</td><td>Receive when active network changed in Extension</td></tr><tr><td>chainChanged</td><td>Receive when active chain changed in Extension</td></tr><tr><td>disconnect</td><td>Receive when disconnect from Extension</td></tr><tr><td>close</td><td>Alias for disconnect event</td></tr></tbody></table>

<table><thead><tr><th width="359.9860751564186">Method</th><th>Description</th></tr></thead><tbody><tr><td>on(event, callback)</td><td>Add event listener</td></tr><tr><td>off(event, callback)</td><td>Remove event listener</td></tr></tbody></table>


---

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