blocks|key|2919603|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2919604|+更新+Per+Alvaro's+comment，从iOS+11.3开始，此解决方案可能不再有效。|blockquote|offset|length|style|BOLD|2919605|2919606|2919607|您应该能够通过选择是否调用preventDefault来允许滚动。例如，|2919608|document.ontouchmove+=+function(e)+{
++++var+target+=+e.currentTarget;
++++while(target)+{
++++++++if(checkIfElementShouldScroll(target))
++++++++++++return;
++++++++target+=+target.parentNode;
++++}

++++e.preventDefault();
};|code-block|syntax|javascript|2919609|或者，这可以通过阻止事件达到文档级来实现。|2919610|elementYouWantToScroll.ontouchmove+=+function(e)+{
++++e.stopPropagation();
};|2919611|编辑对于以后阅读的任何人来说，备用答案确实有效，而且更容易。|2919612|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/7798201/document-ontouchmove-and-scrolling-on-ios-5/7799560?noredirect=1#comment86868200_7799560^0|0|1|2|8|G|0|0|0|0|0|0|0|0|0|2|0^^$0|@$1|2|3|-4|4|5|6|14|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|15|7|@$D|16|E|17|F|G]]|8|@$D|18|E|19|1|1A]]|9|$]]|$1|H|3|-4|4|5|6|1B|7|@]|8|@]|9|$]]|$1|I|3|-4|4|5|6|1C|7|@]|8|@]|9|$]]|$1|J|3|K|4|5|6|1D|7|@]|8|@]|9|$]]|$1|L|3|M|4|N|6|1E|7|@]|8|@]|9|$O|P]]|$1|Q|3|R|4|5|6|1F|7|@]|8|@]|9|$]]|$1|S|3|T|4|N|6|1G|7|@]|8|@]|9|$O|P]]|$1|U|3|V|4|5|6|1H|7|@$D|1I|E|1J|F|G]]|8|@]|9|$]]|$1|W|3|-4|4|5|6|1K|7|@]|8|@]|9|$]]]|X|$Y|$4|Z|10|11|9|$12|13]]]]

<blockquote>
 Update Per <a href="https://stackoverflow.com/questions/7798201/document-ontouchmove-and-scrolling-on-ios-5/7799560?noredirect=1#comment86868200_7799560">Alvaro's comment</a>, this solution may no longer work as of iOS 11.3.
</blockquote>

You should be able to allow scrolling by selecting whether or not preventDefault is called. E.g.,

<pre><code>document.ontouchmove = function(e) {
 var target = e.currentTarget;
 while(target) {
 if(checkIfElementShouldScroll(target))
 return;
 target = target.parentNode;
 }

 e.preventDefault();
};
</code></pre>

Alternatively, this may work by preventing the event from reaching the document level.

<pre><code>elementYouWantToScroll.ontouchmove = function(e) {
 e.stopPropagation();
};
</code></pre>

Edit For anyone reading later, the alternate answer does work and is way easier.

blocks|key|4535081|text|令人沮丧的是发现了stopPropagation和原生div滚动的一个已知问题。它似乎不能阻止onTouchMove冒泡，因此当滚动超出div的边界(顶部向上或底部向下)时，整个页面都会弹回。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4535082|更多关于here和here的讨论。|offset|length|4535083|entityMap|0|LINK|mutability|MUTABLE|url|http://blog.joelambert.co.uk/2011/10/14/a-fix-for-ios5-overflow-scrolling-scrollfix-js/|1|https://github.com/joelambert/ScrollFix^0|0|4|4|0|9|4|1|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@$D|R|E|S|1|T]|$D|U|E|V|1|W]]|A|$]]|$1|F|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]|N|$5|I|J|K|A|$L|O]]]]

It was frustrating to discover a known problem with stopPropagation and native div scrolling. It does not seem to prevent the onTouchMove from bubbling up, so that when scrolling beyond the bounds of the div (upwards at the top or downwards at the bottom), the entire page will bounce.

More discussion <a href="http://blog.joelambert.co.uk/2011/10/14/a-fix-for-ios5-overflow-scrolling-scrollfix-js/" rel="nofollow">here</a> and <a href="https://github.com/joelambert/ScrollFix" rel="nofollow">here</a>.

blocks|key|4817220|text|ScrollFix似乎是一个完美的解决方案。我测试了它，它的效果就像一个护身符！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4817221|https://github.com/joelambert/ScrollFix|offset|length|4817222|/**
+*+ScrollFix+v0.1
+*+http://www.joelambert.co.uk
+*
+*+Copyright+2011,+Joe+Lambert.
+*+Free+to+use+under+the+MIT+license.
+*+http://www.opensource.org/licenses/mit-license.php
+*/

var+ScrollFix+=+function(elem)+{
++++//+Variables+to+track+inputs
++++var+startY,+startTopScroll;

++++elem+=+elem+%7C%7C+document.querySelector(elem);

++++//+If+there+is+no+element,+then+do+nothing++
++++if(!elem)
++++++++return;

++++//+Handle+the+start+of+interactions
++++elem.addEventListener('touchstart',+function(event){
++++++++startY+=+event.touches[0].pageY;
++++++++startTopScroll+=+elem.scrollTop;

++++++++if(startTopScroll+<=+0)
++++++++++++elem.scrollTop+=+1;

++++++++if(startTopScroll+%2B+elem.offsetHeight+>=+elem.scrollHeight)
++++++++++++elem.scrollTop+=+elem.scrollHeight+-+elem.offsetHeight+-+1;
++++},+false);
};|code-block|syntax|javascript|4817223|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|13|0|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|S|8|@]|9|@$D|T|E|U|1|V]]|A|$]]|$1|F|3|G|5|H|7|W|8|@]|9|@]|A|$I|J]]|$1|K|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|C]]]]

ScrollFix seems to be perfect solution. I tested it and it works like a charm!

<a href="https://github.com/joelambert/ScrollFix">https://github.com/joelambert/ScrollFix</a>

<pre><code>/**
 * ScrollFix v0.1
 * http://www.joelambert.co.uk
 *
 * Copyright 2011, Joe Lambert.
 * Free to use under the MIT license.
 * http://www.opensource.org/licenses/mit-license.php
 */

var ScrollFix = function(elem) {
 // Variables to track inputs
 var startY, startTopScroll;

 elem = elem || document.querySelector(elem);

 // If there is no element, then do nothing 
 if(!elem)
 return;

 // Handle the start of interactions
 elem.addEventListener('touchstart', function(event){
 startY = event.touches[0].pageY;
 startTopScroll = elem.scrollTop;

 if(startTopScroll &lt;= 0)
 elem.scrollTop = 1;

 if(startTopScroll + elem.offsetHeight &gt;= elem.scrollHeight)
 elem.scrollTop = elem.scrollHeight - elem.offsetHeight - 1;
 }, false);
};
</code></pre>

blocks|key|2919689|text|对于任何试图使用PhoneGap实现此功能的用户，您可以禁用cordova.plist中的弹性滚动，将UIWebViewBounce的值设置为NO。我希望这对那些像我一样花了很长时间在这上面的人有所帮助。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2919690|entityMap^0|U|D|1F|F|1Z|2|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]|$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|O|8|@]|D|@]|E|$]]]|G|$]]

For anyone trying to acheive this with PhoneGap, you can disable the elastic scrolling in the <code>cordova.plist</code>, set the value for <code>UIWebViewBounce</code> to <code>NO</code>. I hope that helps anyone spending ages on this (like i was).

blocks|key|692120|text|Brian+Nickel的答案中唯一的问题是(正如user1012566提到的)，stopPropagation不能防止当你碰到可滚动的边界时产生气泡。您可以使用以下方法来防止出现这种情况：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|692121|elem.addEventListener('touchstart',+function(event){
++++this.allowUp+=+(this.scrollTop+>+0);
++++this.allowDown+=+(this.scrollTop+<+this.scrollHeight+-+this.clientHeight);
++++this.prevTop+=+null;+
++++this.prevBot+=+null;
++++this.lastY+=+event.pageY;
});

elem.addEventListener('touchmove',+function(event){
++++var+up+=+(event.pageY+>+this.lastY),+
++++++++down+=+!up;

++++this.lastY+=+event.pageY;

++++if+((up+&&+this.allowUp)+%7C%7C+(down+&&+this.allowDown))+
++++++++event.stopPropagation();
++++else+
++++++++event.preventDefault();
});|code-block|syntax|javascript|692122|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

The only issue with Brian Nickel's answer is that (as user1012566 mentioned) stopPropagation doesn't prevent bubbling when you hit your scrollable's boundaries. You can prevent this with the following:

<pre><code>elem.addEventListener('touchstart', function(event){
 this.allowUp = (this.scrollTop &gt; 0);
 this.allowDown = (this.scrollTop &lt; this.scrollHeight - this.clientHeight);
 this.prevTop = null; 
 this.prevBot = null;
 this.lastY = event.pageY;
});

elem.addEventListener('touchmove', function(event){
 var up = (event.pageY &gt; this.lastY), 
 down = !up;

 this.lastY = event.pageY;

 if ((up &amp;&amp; this.allowUp) || (down &amp;&amp; this.allowDown)) 
 event.stopPropagation();
 else 
 event.preventDefault();
});
</code></pre>

iOS 5 has brought a number of nice things to JavaScript/Web Apps. One of them is improved scrolling. If you add 

<pre><code>-webkit-overflow-scroll:touch;
</code></pre>

to the style of a textarea element, scrolling will work nicely with one finger.

But there's a problem. To prevent the entire screen from scrolling, it is recommended that web apps add this line of code:

<pre><code>document.ontouchmove = function(e) {e.preventDefault()};
</code></pre>

This, however, disables the new scrolling.

Does anyone have a nice way to allow the new scrolling within a textarea, but not allow the whole form to scroll?

document.ontouchmove and scrolling on iOS 5

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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JavaScript5为iOS /Web带来了许多好东西。其中之一是改进的滚动。如果您添加了-webkit-overflow-scroll:touch;对于文本区域元素的样式，滚动只需一根手指就可以很好地工作。但是有一个问题。为了防止整个屏幕滚动，建议web应用程序添加以下代码行：document.ontouchmov...

问iOS 5上的document.ontouchmove和滚动
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