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VisualizaçõesPrevent drag scrolling in Safari on Mac
Take a look at this codepen
There's red square in the corner.
If you click (using mouse or touchpad) this square and drag it down - in Safari on Mac .parent element will scroll down.
Even though .parent has overflow-y: hidden;
No scrolling occurs in all other browsers.
How can I prevent this scrolling on safari?
As a rough solution, I can listen to the scroll and override the scrollTop if it's not zero, but perhaps there is a more elegant solution?
3 Respostas
Responde à pergunta0
You can add an intermediary div. then, set width, height, overflow properties to it.
.parent {
width: 200px;
height: 200px;
border: 1px dashed black;
overflow-x: auto;
overflow-y: hidden;
}
/** intermediary div */
.parent > div {
width: 200%;
height: 100%;
overflow: hidden;
}
.child {
width: 100%; /** this should be 100% **/
height: 200%;
background: linear-gradient(to right bottom, red, tomato), linear-gradient(to bottom, white, black);
background-size: 50px 50px, 100% 100%;
background-repeat: no-repeat;
background-position: center;
}<div class="parent">
<div>
<div class="child"></div>
</div>
</div>Or add pointer-events:none to parent.
.parent {
/* This prevents dragging */
pointer-events: none;
width: 200px;
height: 200px;
border: 1px dashed black;
overflow-x: auto;
overflow-y: hidden;
}
.child {
width: 200%;
height: 200%;
background: linear-gradient(to right bottom, red, tomato), linear-gradient(to bottom, white, black);
background-size: 50px 50px, 100% 100%;
background-repeat: no-repeat;
background-position: center;
}<div class="parent">
<div class="child"></div>
</div>0
Using css you can give pointer-events:none; to avoid any events occurring while clicking it.
0
This is definitely an interesting find! You'd think this would be impossible since you set overflow-y to none. Nonetheless you can prevent this behavior and disallow clicks inside the parent using this JavScript:
const parent = document.querySelector('.parent');
parent.addEventListener('mousedown', e => e.preventDefault());
By adding preventDefault() to the event triggered on mousedown, you prevent the browser from evaluating any further events related to that click, including dragging. Here it is in action:
const parent = document.querySelector('.parent');
parent.addEventListener('mousedown', e => e.preventDefault());.parent {
width: 200px;
height: 200px;
border: 1px dashed black;
overflow-x: auto;
overflow-y: hidden;
}
.child {
width: 200%;
height: 200%;
background: linear-gradient(to right bottom, red, tomato), linear-gradient(to bottom, white, black);
background-size: 50px 50px, 100% 100%;
background-repeat: no-repeat;
background-position: center;
}<div class="parent">
<div class="child"></div>
</div>