The core methods of selecting all operations in different scenarios include: 1. Use the shortcut keys Ctrl A (Windows) or Cmd A (Mac) to be suitable for most software such as Word, Excel and browsers, but you need to pay attention to the need to click once and then select all when the page has multiple optional areas; 2. Use the mouse to quickly select the entire text, which is suitable for text editors and web browsers, and double-click to select words; 3. Click the upper left triangle button in table software such as Excel or use the shortcut key to select all tables. The column or row number can be selected separately. If there are blank lines, Ctrl A must be selected twice; 4. Use Ctrl D or Cmd D to select the same keyword one by one, or use Ctrl Shift L or Cmd Shift L to select all matches at once to improve batch modification efficiency.
You may need to "select all" content in different scenarios, such as documents, tables, web elements and even code blocks. The operation methods are slightly different in different environments, but the core ideas are basically the same.

Commonly used shortcut keys: Ctrl A (Windows) or Cmd A (Mac)
This is the most direct and common way of "select all". This shortcut key works almost everything in Word, Excel, browser, or most software.
- Note : Sometimes there may be multiple optional areas on the page, such as a web page with both text and pictures. Click once and then press Ctrl A to truly select all of them.
- Tips : If you only want to select a part of the content, such as a few sentences in a paragraph of text, you can drag the selection with the mouse, or hold down the Shift key and cooperate with the arrow key to accurately locate it.
Mouse operation: three-click fast all selection paragraphs
In most text editors or processing software, clicking the left mouse button three times in a row can quickly select the entire paragraph of text. This method is faster than dragging the mouse, especially in long paragraphs.

- Suitable for Word, Notepad, Web browser, etc.
- If you just double-click, you will usually select a word instead of the whole paragraph
Select all in Excel or table software
If you use Excel or Google Sheets and want to select the entire table data area, you can directly click the "Select All" button (gray triangle) in the upper left corner, or use the shortcut key Ctrl A.
- Want to select only one column? Just nod the letters in the column
- Only select a certain line? Just click the line number
- If there are empty rows or blank cells in the middle of the table, the first time Ctrl A may only select the current area, and press it again to select the entire table
Selection techniques for "multi-cursor" in programming or code editor
Sometimes you want to modify multiple identical keywords at the same time, you can use the following methods in a code editor (such as VS Code, Sublime):

- First select a keyword, then press
Ctrl D
(Windows) orCmd D
(Mac) to select the next same word one by one. - If you want to select all at once, you can press
Ctrl Shift L
(Windows) orCmd Shift L
(Mac)
Although this method is not a "select all" in the traditional sense, it is very efficient when batch modifications are made.
Basically these commonly used methods. Selecting the appropriate operation according to different scenarios will improve efficiency a lot. Some seem simple, but if you don’t pay attention to details, you will easily get stuck.
The above is the detailed content of How to select all. For more information, please follow other related articles on the PHP Chinese website!

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