Extra Param

There are  two additional parameter-passing formatsthe short dash format and the GNU long parameter format,providing us with better options for parameter passing.Lets take a look at the specific usage methods.
• Short Dash FormatAppend the`&extraParam.cmdLineParamStyle=2`parameter to the URL.

```
http://[server_ip]:8181/enterAppli?appliId=[application_id]&extraParam.userName=zhangsan&extraParam.age=12&extraParam.cmdLineParamStyle=2

```
![](https://docs.paraverse.cc/media/202510/372dd818151744078e6de8b6c22aa9139192.png)

• GNU Long Parameter FormatAppend the`&extraParam.cmdLineParamStyle=1`parameter to the URL.

```
http://[server_ip]:8181/enterAppli?appliId=[application_id]&extraParam.userName=zhangsan&extraParam.age=12&extraParam.cmdLineParamStyle=1

```

![](https://docs.paraverse.cc/media/202510/f778aa91fc9a4d7eb0f56ff7a5efadda8185.png)

• Do not append the`&extraParam.cmdLineParamStyle`parameter at all.

```
http://[server_ip]:8181/enterAppli?appliId=[application_id]&extraParam.userName=zhangsan&extraParam.age=12

```

![](https://docs.paraverse.cc/media/202510/f469d9ba51bd4bac8460b8d804581f991300.png)

The effects of the three parameter
- passing formats are demonstrated in the order of short dash,GNU long parameter,and default parameter
.Additionally,we have introduced a feature to handle the encoding of special characters in additional parameters.The usage method is as follows:

```
"https://XXXX?extraParam.encoded.token=" + encodeURIComponent(jsonValue)

```
such as :

```
https://XXXX?appliId=**&extraParam.encoded.X=-ResX%3D2560&extraParam.encoded.Y=-ResY%3D1350
```
The above is the trial method directly concatenated into URL parameters.If you are using WebSDK to pass additional parameters,please refer to the following methodsWebSDK provides multiple demos.For example,take the sample-plain-html and ui-mobile-vue-new demos.

![](https://docs.paraverse.cc/media/202510/b0fad058ddac4c26802d12b02399d0153321.png)
**Sample 1：sample-plain-html**
Open`sample-plain-html/index.html`and modify the code as follows

```
client.connect({
 appliId: "925773094113509376",
 ....
 "extraParam.params": "zhangsan 12"**
})
```

**Sample 2：ui-mobile-vue-new**
Open`ui-mobile-vue-new/src/App.vue`and add the following content to the`start()`method.
```
async start() {
  const { larksr } = this;
  try {
    let params = {};
    params.appliId = '1420437156576362496'
    var extraParams = {};
    extraParams['extraParam.test'] = "zhangsan 12";
    if(Object.keys(extraParams).length>0) {
     params = Object.assign(params, extraParams)
}
....
```

Or,when using the`larksr.connect`method to connect to the cloud rendering,add the following parameters.

```
 client.connect({
 appliId: "925773094113509376",
 ....
 "extraParam.params": "zhangsan 12"
})
```