Range()

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这是一个实验中的功能
此功能某些浏览器尚在开发中,请参考浏览器兼容性表格以得到在不同浏览器中适合使用的前缀。由于该功能对应的标准文档可能被重新修订,所以在未来版本的浏览器中该功能的语法和行为可能随之改变。

构造函数 Range() 返回一个新创建的 Range 对象,新创建的对象属于全局 Document 对象。

语法

range = new Range()

示例

In this example we create a new range with the Range() constructor, and set its beginning and end positions using the Range.setStartBefore() and Range.setEndAfter() methods. We then select the range using window.getSelection() and Selection.addRange().

HTML

<p>First paragraph.</p>
<p>Second paragraph.</p>
<p>Third paragraph.</p>
<p>Fourth paragraph.</p>

JavaScript

const paragraphs = document.querySelectorAll('p');

// 创建 Range 对象
const range = new Range();

// Range 起始位置在段落2
range.setStartBefore(paragraphs[1]);

// Range 结束位置在段落3
range.setEndAfter(paragraphs[2]);

// 获取 selection 对象
const selection = window.getSelection();

// 添加光标选择的范围
selection.addRange(range);

Result

规范

Specification Status Comment
DOM
Range.Range()
Living Standard Initial definition.

浏览器兼容性

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!
Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support (Yes) 24.0 (24.0) 未实现 15.0 (Yes)
Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support (Yes) 24.0 (24.0) 未实现 15.0 (Yes)

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