CODEWITHSUNDEEP
javascript
Leon
Leon

Reputation: 1508

Mobile menu disappears on scroll (pure javascript)

I'm using the following code if for a responsive mobile menu. The problem is with the resize event. On scrolling the menu on a mobile touch screen the menu disappears.

if (document.getElementById("burger-check")) {

var viewportWidth = window.innerWidth || document.documentElement.clientWidth;
if (viewportWidth > 768) {
    document.getElementById("burger-check").checked = true;
} else {
    document.getElementById("burger-check").checked = false;
}

window.addEventListener('resize', function () {
    viewportWidth = window.innerWidth || document.documentElement.clientWidth;
    if (viewportWidth > 768) {
        document.getElementById("burger-check").checked = true;
    } else {
        document.getElementById("burger-check").checked = false;
    }
}, {
    passive: false
});

}

Upvotes: 0

Views: 57

Answers (1)

Bryan Nivarez
Bryan Nivarez

Reputation: 34

function myFunction(x) {
  if (x.matches) { // If media query matches
    document.body.style.backgroundColor = "yellow";
  } else {
    document.body.style.backgroundColor = "pink";
  }
}

var x = window.matchMedia("(max-width: 700px)")
myFunction(x) // Call listener function at run time
x.addEventListener("change", myFunction) // Attach listener function on state changes

you can also use matchMedia then get the max-width https://www.w3schools.com/howto/tryit.asp?filename=tryhow_js_matchmedia

Upvotes: 1

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