Javascript - 模拟空格键按键 [英] Javascript - Emulate a space bar keypress
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问题描述
我到处搜索,阅读MDN上的文档,但我似乎无法解决这个问题。
I've searched everywhere, read the docs on MDN, but I can't seem to solve this problem.
我想模仿客户端按空格使用Javascript吧。
I want to emulate the client pressing the space bar using Javascript.
我试过:
var e = new KeyboardEvent('keydown');
e.which = e.keyCode = 32; // 32 is the keycode for the space bar
document.dispatchEvent(e);
然而,无论出于何种原因,这都无效;如果在上面的代码之前放置了以下事件处理程序:
However this hasn't worked for whatever reason; if the following event handler is put before the above code:
document.addEventListener('keydown', function(ev){
console.log(ev.which);
});
0
被记录到控制台。
由于某种原因,事件被触发但关键始终是 0
For some reason, the event is triggered but the key is always 0
有人可以帮我解决吗?
推荐答案
你可以这样做
var e = new KeyboardEvent('keydown',{'keyCode':32,'which':32});
演示: https://jsfiddle.net/5se13tmg/
参考: https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/KeyboardEvent
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