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# URLSearchParams.append()

The **`append()`** method of the `URLSearchParams`
interface appends a specified key/value pair as a new search parameter.

As shown in the example below, if the same key is appended multiple times it will
appear in the parameter string multiple times for each value.

## Syntax

```js
append(name, value)
```

### Parameters

- `name`
  - : The name of the parameter to append.
- `value`
  - : The value of the parameter to append.

### Return value

None `undefined`.
