我使用适用于iOS和Android的jQueryMobile创建了一个网站。
我不希望文档本身滚动。相反，只有一个区域（<div>元素）应该是可滚动的（通过css属性overflow-y:scroll）。
所以我通过以下方式禁用了文档滚动：
$(document).bind("touchstart", function(e){
e.preventDefault();
});
$(document).bind("touchmove", function(e){
e.preventDefault();
});
但是，无论是否设置overflow:scroll，这也将禁用文档中所有其他元素的滚动。
我该如何解决这个问题？
答案 0 :(得分：24)
仅限CSS 解决方案如何：
https://jsfiddle.net/Volker_E/jwGBy/24/
body获取position: fixed;以及您希望的所有其他元素overflow: scroll;。
适用于移动Chrome（WebKit）/ Firefox 19 / Opera 12。
您还将看到我对jQuery解决方案的各种尝试。但是，只要您将touchmove / touchstart绑定到文档，就会阻止子div中的滚动，无论是否未绑定。
免责声明：解决这个问题的方法在很多方面基本上不是很好用！你永远不会知道访问者的视口究竟有多大或者他们使用的是哪种字体大小（客户端用户代理样式），因此可能很容易就是，文档中隐藏了重要内容。
答案 1 :(得分：11)
最后，我得到了它的工作。真的很简单：
var $layer = $("#layer");
$layer.bind('touchstart', function (ev) {
var $this = $(this);
var layer = $layer.get(0);
if ($this.scrollTop() === 0) $this.scrollTop(1);
var scrollTop = layer.scrollTop;
var scrollHeight = layer.scrollHeight;
var offsetHeight = layer.offsetHeight;
var contentHeight = scrollHeight - offsetHeight;
if (contentHeight == scrollTop) $this.scrollTop(scrollTop-1);
});
答案 2 :(得分：10)
也许我误解了这个问题，但如果我纠正了：
您希望不能滚动除某个元素以外的其他元素，以便：
$(document).bind("touchmove", function(e){
e.preventDefault();
});
防止文档中的所有内容。
为什么不直接停止在要滚动的元素上冒泡的事件？ （PS：你不必阻止touchstart - ＆gt;如果你使用触摸开始来选择元素而不是被阻止的点击，只需要触摸移动，因为它实际上是在跟踪移动）
$('#element').on('touchmove', function (e) {
e.stopPropagation();
});
现在关于元素CSS
#element {
overflow-y: scroll; // (vertical)
overflow-x: hidden; // (horizontal)
}
如果您使用的是移动设备，甚至可以更进一步。 您可以强制硬件加速滚动（虽然并非所有移动浏览器都支持此功能）;
Browser Overflow scroll:
Android Browser Yes
Blackberry Browser Yes
Chrome for Mobile Yes
Firefox Mobile Yes
IE Mobile Yes
Opera Mini No
Opera Mobile Kinda
Safari Yes
#element.nativescroll {
-webkit-overflow-scrolling: touch;
}
正常：
<div id="element"></div>
原生感觉：
<div id="element" class="nativescroll"></div>
答案 3 :(得分：3)
我一直在寻找一种不需要调出应该滚动的特定区域的解决方案。拼凑一些资源，这对我有用：
// Detects if element has scroll bar
$.fn.hasScrollBar = function() {
return this.get(0).scrollHeight > this.outerHeight();
}
$(document).on("touchstart", function(e) {
var $scroller;
var $target = $(e.target);
// Get which element could have scroll bars
if($target.hasScrollBar()) {
$scroller = $target;
} else {
$scroller = $target
.parents()
.filter(function() {
return $(this).hasScrollBar();
})
.first()
;
}
// Prevent if nothing is scrollable
if(!$scroller.length) {
e.preventDefault();
} else {
var top = $scroller[0].scrollTop;
var totalScroll = $scroller[0].scrollHeight;
var currentScroll = top + $scroller[0].offsetHeight;
// If at container edge, add a pixel to prevent outer scrolling
if(top === 0) {
$scroller[0].scrollTop = 1;
} else if(currentScroll === totalScroll) {
$scroller[0].scrollTop = top - 1;
}
}
});
此代码需要jQuery。
来源：
<强>更新
我需要一个vanilla JavaScript版本，因此以下是修改后的版本。我实现了一个margin-checker和一些明确允许输入/ textareas可以点击的东西（我在项目中遇到了这个问题，我用它......对你的项目来说可能没有必要）。请记住这是ES6代码。
const preventScrolling = e => {
const shouldAllowEvent = element => {
// Must be an element that is not the document or body
if(!element || element === document || element === document.body) {
return false;
}
// Allow any input or textfield events
if(['INPUT', 'TEXTAREA'].indexOf(element.tagName) !== -1) {
return true;
}
// Get margin and outerHeight for final check
const styles = window.getComputedStyle(element);
const margin = parseFloat(styles['marginTop']) +
parseFloat(styles['marginBottom']);
const outerHeight = Math.ceil(element.offsetHeight + margin);
return (element.scrollHeight > outerHeight) && (margin >= 0);
};
let target = e.target;
// Get first element to allow event or stop
while(target !== null) {
if(shouldAllowEvent(target)) {
break;
}
target = target.parentNode;
}
// Prevent if no elements
if(!target) {
e.preventDefault();
} else {
const top = target.scrollTop;
const totalScroll = target.scrollHeight;
const currentScroll = top + target.offsetHeight;
// If at container edge, add a pixel to prevent outer scrolling
if(top === 0) {
target.scrollTop = 1;
} else if(currentScroll === totalScroll) {
target.scrollTop = top - 1;
}
}
};
document.addEventListener('touchstart', preventScrolling);
document.addEventListener('mousedown', preventScrolling);
答案 4 :(得分：2)
这是我正在使用的解决方案：
$ scrollElement是scroll元素，$ scrollMask是一个样式为position: fixed; top: 0; bottom: 0;的div。
$ scrollMask的z-index小于$ scrollElement。
$scrollElement.on('touchmove touchstart', function (e) {
e.stopPropagation();
});
$scrollMask.on('touchmove', function(e) {
e.stopPropagation();
e.preventDefault();
});
答案 5 :(得分：2)
就我而言，我有一个可滚动的主体和一个可滚动的浮动菜单。两者都必须是可滚动的，但是当“浮动菜单”（位置：固定）接收到触摸事件并且滚动并且它到达顶部或底部时，我不得不阻止身体滚动。默认情况下，浏览器会开始滚动正文。
我真的很喜欢jimmont's answer，但不幸的是它在所有设备和浏览器上都无法正常工作，尤其是快速和长时间的滑动。
我最终在浮动菜单上使用了MOMENTUM SCROLLING USING JQUERY (hnldesign.nl)，这可以防止默认的浏览器滚动，然后动画滚动自己。为了完整起见，我在此处加that code：
/**
* jQuery inertial Scroller v1.5
* (c)2013 hnldesign.nl
* This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/4.0/.
**/
/*jslint browser: true*/
/*global $, jQuery*/
/* SETTINGS */
var i_v = {
i_touchlistener : '.inertialScroll', // element to monitor for touches, set to null to use document. Otherwise use quotes. Eg. '.myElement'. Note: if the finger leaves this listener while still touching, movement is stopped.
i_scrollElement : '.inertialScroll', // element (class) to be scrolled on touch movement
i_duration : window.innerHeight * 1.5, // (ms) duration of the inertial scrolling simulation. Devices with larger screens take longer durations (phone vs tablet is around 500ms vs 1500ms). This is a fixed value and does not influence speed and amount of momentum.
i_speedLimit : 1.2, // set maximum speed. Higher values will allow faster scroll (which comes down to a bigger offset for the duration of the momentum scroll) note: touch motion determines actual speed, this is just a limit.
i_handleY : true, // should scroller handle vertical movement on element?
i_handleX : true, // should scroller handle horizontal movement on element?
i_moveThreshold : 100, // (ms) determines if a swipe occurred: time between last updated movement @ touchmove and time @ touchend, if smaller than this value, trigger inertial scrolling
i_offsetThreshold : 30, // (px) determines, together with i_offsetThreshold if a swipe occurred: if calculated offset is above this threshold
i_startThreshold : 5, // (px) how many pixels finger needs to move before a direction (horizontal or vertical) is chosen. This will make the direction detection more accurate, but can introduce a delay when starting the swipe if set too high
i_acceleration : 0.5, // increase the multiplier by this value, each time the user swipes again when still scrolling. The multiplier is used to multiply the offset. Set to 0 to disable.
i_accelerationT : 250 // (ms) time between successive swipes that determines if the multiplier is increased (if lower than this value)
};
/* stop editing here */
//set some required vars
i_v.i_time = {};
i_v.i_elem = null;
i_v.i_elemH = null;
i_v.i_elemW = null;
i_v.multiplier = 1;
// Define easing function. This is based on a quartic 'out' curve. You can generate your own at http://www.timotheegroleau.com/Flash/experiments/easing_function_generator.htm
if ($.easing.hnlinertial === undefined) {
$.easing.hnlinertial = function (x, t, b, c, d) {
"use strict";
var ts = (t /= d) * t, tc = ts * t;
return b + c * (-1 * ts * ts + 4 * tc + -6 * ts + 4 * t);
};
}
$(i_v.i_touchlistener || document)
.on('touchstart touchmove touchend', function (e) {
"use strict";
//prevent default scrolling
e.preventDefault();
//store timeStamp for this event
i_v.i_time[e.type] = e.timeStamp;
})
.on('touchstart', function (e) {
"use strict";
this.tarElem = $(e.target);
this.elemNew = this.tarElem.closest(i_v.i_scrollElement).length > 0 ? this.tarElem.closest(i_v.i_scrollElement) : $(i_v.i_scrollElement).eq(0);
//dupecheck, optimizes code a bit for when the element selected is still the same as last time
this.sameElement = i_v.i_elem ? i_v.i_elem[0] == this.elemNew[0] : false;
//no need to redo these if element is unchanged
if (!this.sameElement) {
//set the element to scroll
i_v.i_elem = this.elemNew;
//get dimensions
i_v.i_elemH = i_v.i_elem.innerHeight();
i_v.i_elemW = i_v.i_elem.innerWidth();
//check element for applicable overflows and reevaluate settings
this.i_scrollableY = !!((i_v.i_elemH < i_v.i_elem.prop('scrollHeight') && i_v.i_handleY));
this.i_scrollableX = !!((i_v.i_elemW < i_v.i_elem.prop('scrollWidth') && i_v.i_handleX));
}
//get coordinates of touch event
this.pageY = e.originalEvent.touches[0].pageY;
this.pageX = e.originalEvent.touches[0].pageX;
if (i_v.i_elem.is(':animated') && (i_v.i_time.touchstart - i_v.i_time.touchend) < i_v.i_accelerationT) {
//user swiped while still animating, increase the multiplier for the offset
i_v.multiplier += i_v.i_acceleration;
} else {
//else reset multiplier
i_v.multiplier = 1;
}
i_v.i_elem
//stop any animations still running on element (this enables 'tap to stop')
.stop(true, false)
//store current scroll positions of element
.data('scrollTop', i_v.i_elem.scrollTop())
.data('scrollLeft', i_v.i_elem.scrollLeft());
})
.on('touchmove', function (e) {
"use strict";
//check if startThreshold is met
this.go = (Math.abs(this.pageX - e.originalEvent.touches[0].pageX) > i_v.i_startThreshold || Math.abs(this.pageY - e.originalEvent.touches[0].pageY) > i_v.i_startThreshold);
})
.on('touchmove touchend', function (e) {
"use strict";
//check if startThreshold is met
if (this.go) {
//set animpar1 to be array
this.animPar1 = {};
//handle events
switch (e.type) {
case 'touchmove':
this.vertical = Math.abs(this.pageX - e.originalEvent.touches[0].pageX) < Math.abs(this.pageY - e.originalEvent.touches[0].pageY); //find out in which direction we are scrolling
this.distance = this.vertical ? this.pageY - e.originalEvent.touches[0].pageY : this.pageX - e.originalEvent.touches[0].pageX; //determine distance between touches
this.acc = Math.abs(this.distance / (i_v.i_time.touchmove - i_v.i_time.touchstart)); //calculate acceleration during movement (crucial)
//determine which property to animate, reset animProp first for when no criteria is matched
this.animProp = null;
if (this.vertical && this.i_scrollableY) { this.animProp = 'scrollTop'; } else if (!this.vertical && this.i_scrollableX) { this.animProp = 'scrollLeft'; }
//set animation parameters
if (this.animProp) { this.animPar1[this.animProp] = i_v.i_elem.data(this.animProp) + this.distance; }
this.animPar2 = { duration: 0 };
break;
case 'touchend':
this.touchTime = i_v.i_time.touchend - i_v.i_time.touchmove; //calculate touchtime: the time between release and last movement
this.i_maxOffset = (this.vertical ? i_v.i_elemH : i_v.i_elemW) * i_v.i_speedLimit; //(re)calculate max offset
//calculate the offset (the extra pixels for the momentum effect
this.offset = Math.pow(this.acc, 2) * (this.vertical ? i_v.i_elemH : i_v.i_elemW);
this.offset = (this.offset > this.i_maxOffset) ? this.i_maxOffset : this.offset;
this.offset = (this.distance < 0) ? -i_v.multiplier * this.offset : i_v.multiplier * this.offset;
//if the touchtime is low enough, the offset is not null and the offset is above the offsetThreshold, (re)set the animation parameters to include momentum
if ((this.touchTime < i_v.i_moveThreshold) && this.offset !== 0 && Math.abs(this.offset) > (i_v.i_offsetThreshold)) {
if (this.animProp) { this.animPar1[this.animProp] = i_v.i_elem.data(this.animProp) + this.distance + this.offset; }
this.animPar2 = { duration: i_v.i_duration, easing : 'hnlinertial', complete: function () {
//reset multiplier
i_v.multiplier = 1;
}};
}
break;
}
// run the animation on the element
if ((this.i_scrollableY || this.i_scrollableX) && this.animProp) {
i_v.i_elem.stop(true, false).animate(this.animPar1, this.animPar2);
}
}
});
另一个观察：我还尝试了在菜单div上的e.stopPropagation（）和触摸移动事件的窗口/主体上的e.preventDefault（）的各种组合，但没有成功，我只是设法阻止滚动我想要而不滚动我不想要。我还尝试在整个文档上使用div，在文档和菜单之间使用z-index，仅在touchstart和touchend之间可见，但它没有收到touchmove事件（因为它位于菜单div下）。
答案 6 :(得分：0)
这是一个使用jQuery进行事件的解决方案。
var stuff = {};
$('#scroller').on('touchstart',stuff,function(e){
e.data.max = this.scrollHeight - this.offsetHeight;
e.data.y = e.originalEvent.pageY;
}).on('touchmove',stuff,function(e){
var dy = e.data.y - e.originalEvent.pageY;
// if scrolling up and at the top, or down and at the bottom
if((dy < 0 && this.scrollTop < 1)||(dy > 0 && this.scrollTop >= e.data.max)){
e.preventDefault();
};
});
答案 7 :(得分：0)
首先将innerScroller放在屏幕上的任意位置，然后通过将其设置为“隐藏”来修复outerScroller。当您想要恢复它时，您可以将其重新设置为＆＃39; auto＆＃39;或者＆＃39;滚动＆＃39;，无论您以前使用过哪个。
答案 8 :(得分：0)
这是我的实现，适用于触摸设备和笔记本电脑。
.main {
border: 1px solid red;
height: 200vh;
}
.test {
border: 1px solid green;
height: 300px;
width: 300px;
overflow-y: auto;
position: absolute;
top: 100px;
left: 50%;
}
.content {
height: 100vh;
}<div class="main">
<div class="test">
<div class="content"></div>
</div>
</div>If(HasBeenPressed, "Hello", "GoodBye")
答案 9 :(得分：0)
这对我来说适用于Android和IOS设备。
想象一下，我们有一个div class="backdrop">元素，我们永远都不想滚动。但是我们希望能够滚动到此backdrop顶部的元素。
function handleTouchMove(event) {
const [backdrop] = document.getElementsByClassName('backdrop');
const isScrollingBackdrop = backdrop === event.target;
isScrollingBackdrop ? event.preventDefault() : event.stopPropagation();
}
window.addEventListener('touchmove', handleTouchMove, { passive: false });
因此，我们收听touchmove事件，如果我们在背景上滚动，则会阻止它。如果我们要滚动其他内容，则可以允许它，但是停止其传播，这样它也不会滚动backdrop。
当然，这是非常基本的，可以重做和扩展很多，但这是解决我在VueJs2项目中出现的问题的原因。
希望有帮助！ ;）
答案 10 :(得分：0)
通过在HTML上添加css“ overflow-y：hidden”，我能够禁用主文档的滚动。
它根本不会干扰定位。