Video mute/unmute button javaScript

问题

JavaScript beginner here!

I am trying to make a video player in javaScript for a school project but I am having trouble with my mute button.

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.

Here is my current mute button.

var button = document.getElementById('mute');
    button.onclick = function (){
        video.muted = true;
    };

I tried an if else statement but it was unsuccessful

var button = document.getElementById('mute');
    button.onclick = function (){

    if (video.muted = false) {    
           video.muted = true;
    }

    else {
        video.muted = false;
    }

    };

Thanks for your help.

回答1:

if (video.muted = false) {    
       video.muted = true;
}

This should be

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.

来源：https://stackoverflow.com/questions/33060291/video-mute-unmute-button-javascript