js eventlister 控制 - V2EX

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if (window.DeviceOrientationEvent) { window.addEventListener('deviceorientation', function(eventData) { d =eventData.gamma; //执行打码 },false); } js 事件监听会一直不断的重复执行代码。怎么让代码只执行一次。或者让 eventData.gama 赋值给一个变量，让全局使用？

7 条回复 2017-03-28 16:49:02 +08:00

1

seki

2017-03-27 23:22:42 +08:00

removeEventListener

2

Merlini

2017-03-27 23:36:24 +08:00 via Android

once

3

wico97

OP

2017-03-27 23:36:45 +08:00

@Merlini 什么 once

4

FrankFang128

2017-03-28 00:56:19 +08:00

在监听里面取消监听啊……

5

malcolmyu

2017-03-28 08:04:03 +08:00

@wico97 #3 监听之后就 remove 掉呗

6

Merlini

2017-03-28 08:11:36 +08:00 via Android

@wico97 JQuery 有个方法 once ，就是只绑定一次，不过你用原生写的就 remove 好了

7

wico97

OP

2017-03-28 16:49:02 +08:00

@malcolmyu
@Merlini 好的。我已经用 remove 解决了

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