视频静音/取消静音按钮 javaScript
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Video mute/unmute button javaScript
提问by NAFarr
JavaScript beginner here!
JavaScript初学者在这里！
I am trying to make a video player in javaScript for a school project but I am having trouble with my mute button.
我正在尝试用 javaScript 为学校项目制作视频播放器，但我的静音按钮有问题。
I want the button to mute the video when clicked and unmute if the button is pressed again. So far I have only been able to mute the video and keep it muted.
我希望该按钮在单击时使视频静音，如果再次按下该按钮则取消静音。到目前为止，我只能将视频静音并保持静音。
Here is my current mute button.
这是我当前的静音按钮。
var button = document.getElementById('mute');
button.onclick = function (){
video.muted = true;
};
I tried an if else statement but it was unsuccessful
我尝试了 if else 语句，但没有成功
var button = document.getElementById('mute');
button.onclick = function (){
if (video.muted = false) {
video.muted = true;
}
else {
video.muted = false;
}
};
Thanks for your help.
谢谢你的帮助。
回答by David Li
if (video.muted = false) {
video.muted = true;
}
This should be
这应该是
if (video.muted === false) {
video.muted = true;
}
Or else the else statement will never run, since you are setting video.muted to false every time in the if statement itself.
否则 else 语句将永远不会运行，因为您每次在 if 语句本身中都将 video.muted 设置为 false。
