admin管理员组

文章数量:1386700

When focus is on a button in a JQuery dialog, the space bar does two things: it selects the button and it scrolls the window. People who are familiar with space bar as a tool for selecting buttons will expect the first but find the second jarring and inappropriate.

So the question: how do I prevent the page from scrolling? I had thought that it was just a matter of returning false from the button handler but that does not appear to be true.

When focus is on a button in a JQuery dialog, the space bar does two things: it selects the button and it scrolls the window. People who are familiar with space bar as a tool for selecting buttons will expect the first but find the second jarring and inappropriate.

So the question: how do I prevent the page from scrolling? I had thought that it was just a matter of returning false from the button handler but that does not appear to be true.

  • javascript
  • jquery
Share Improve this question asked Apr 14, 2012 at 20:36 Mark BrittinghamMark Brittingham 28.9k13 gold badges82 silver badges111 bronze badges
Add a ment  | 

1 Answer 1

Reset to default 8

I've tried the solution suggested here and elsewhere and none of them worked for me. What finally worked was a document-wide keydown handler like this:

$(document).keydown(function (e) {
    var key = e.charCode ? e.charCode : e.keyCode ? e.keyCode : 0;
    if ((key == 32) && (e.target.className != null) && (e.target.className.indexOf("ui-button") != -1))
       e.preventDefault();
 });

The key == 32 is obviously a check for the space bar. The className is a check for whether the UI (User Interface) element in question is a JQuery button. Without the button check, the space bar is disabled everywhere.

本文标签：

版权声明：本文标题：javascript - How to prevent page from scrolling when a JQuery button is focused and space-bar is pressed - Stack Overflow 内容由网友自发贡献，该文观点仅代表作者本人， 转载请联系作者并注明出处：http://www.betaflare.com/web/1744554735a2612403.html， 本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌抄袭侵权/违法违规的内容，一经查实，本站将立刻删除。