Input.GetKey 获取键

# [Input](Input.html).GetKey 获取键

static function *GetKey* (*name* : string) : bool

*Description* 描述

Returns true while the user holds down the key identified by name. Think auto
fire.

当通过名称指定的按键被用户按住时返回 true。想想自动开火。

For the list of key identifiers see Input Manager. When dealing with input it
is recommended to use [Input.GetAxis](Input.GetAxis.html) and [Input.GetButton](file:///E:/Program%20Files/Unity/Editor/Data/Documentation/Documentation/ScriptReference/Input.GetButton.html)
instead since it allows end-users to configure the keys.

按键的标识符列表可以在输入管理器中找到，当处理输入时推荐使用 Input.GetAxis 和 Input.GetButton，它们允许最终用户自定义按键。

* [C#](#)
* [JavaScript](#)

```
using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
	void Update() {
		if (Input.GetKey("up"))
			print("up arrow key is held down");

if (Input.GetKey("down"))
			print("down arrow key is held down");

}
}
```

```
function Update () {
	if (Input.GetKey ("up"))
		print ("up arrow key is held down");

if (Input.GetKey ("down"))
		print ("down arrow key is held down");
}
```

• static function *GetKey* (*key* : [KeyCode](../Enumerations/KeyCode/KeyCode.html)) : bool

*Description* 描述

Returns true while the user holds down the key identified by the key [KeyCode](../Enumerations/KeyCode/KeyCode.html) enum parameter.

当通过按键枚举参数指定的按键被用户按住时返回 true。

* [C#](#)
* [JavaScript](#)

```
using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
	void Update() {
		if (Input.GetKey(KeyCode.UpArrow))
			print("up arrow key is held down");

if (Input.GetKey(KeyCode.DownArrow))
			print("down arrow key is held down");

}
}
```

```
function Update () {
	if (Input.GetKey (KeyCode.UpArrow))
		print ("up arrow key is held down");

if (Input.GetKey (KeyCode.DownArrow))
		print ("down arrow key is held down");
}
```