[H5] range object of API, h5apirange object

[H5] range object of API, h5apirange object

Range object:
Is a fragment (HTML segment) that contains a part of a node or a text node. In general, the page is only possible at the same time
There is a range, or it may be multiple ranges (use Ctrl Jian for multiple selections, but some Browsers Do not allow this, such as Chrome ).
You can obtain the range object from selection, or use the document. createRange () method to obtain
1. getSelection (): Get the information selected on the page;
2. rangeCount: Number of intervals. select several items;
3. selection. rangeCount;
4. selection. getRangeAt (I );

5. the createRange () method creates a range object;