您可以在JavaScript中设置和/或更改用户的文本选择吗? [英] Can you set and/or change the user’s text selection in JavaScript?
问题描述
在JavaScript中,有多种方法可以访问用户的文本选择,以及创建文本选择(或范围) - 请参阅 http://www.quirksmode.org/dom/range_intro.html 。
In JavaScript, there are various methods for accessing the user’s text selection, and creating text selections (or ranges) — see http://www.quirksmode.org/dom/range_intro.html.
根据该页面,您可以通过编程方式创建范围,并访问其中的文本。但这样做并不会改变用户的文本选择,或者如果用户没有选择文本,则会使用户有一些选定的文本。
As per that page, you can programmatically create a range, and access the text within that. But doing this doesn’t change the user’s text selection, or make the user have some selected text if they don’t already.
你可以设置和/或更改用户在JavaScript中的文本选择?
Can you set and/or change the user’s text selection in JavaScript?
推荐答案
是的。在所有浏览器中,您可以从用户的选择中获得一个或多个 Range
s或 TextRange
,以及范围
和 TextRange
有更改范围内容的方法。
Yes. In all browsers you can get one or more Range
s or a TextRange
from the user's selection, and both Range
and TextRange
have methods for changing the contents of the range.
更新
您可以通过创建范围
并添加它来设置用户的选择到大多数浏览器中的选择
对象,并创建 TextRange
并调用其 select() IE中的
方法< = 8。
You can set the user's selection by creating a Range
and adding it to the Selection
object in most browsers and by creating a TextRange
and calling its select()
method in IE <= 8.
例如,要将选择设置为包含元素的内容:
For example, to set the selection to encompass the contents of an element:
function selectElementContents(el) {
if (window.getSelection && document.createRange) {
var sel = window.getSelection();
var range = document.createRange();
range.selectNodeContents(el);
sel.removeAllRanges();
sel.addRange(range);
} else if (document.selection && document.body.createTextRange) {
var textRange = document.body.createTextRange();
textRange.moveToElementText(el);
textRange.select();
}
}
选择
可用于更改用户的对象在非IE浏览器中选择。如果您可以更具体地了解如何更改选择,那么将更容易提供帮助。
There are also several methods of the Selection
object that can be used to change the user's selection in non-IE browsers. If you can be more specific about how you want to change the selection then it will be easier to help.
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