Xiaoqiang's HTML5 mobile development road (29) - JavaScript review 4

1. Scope of variables

The execution process of JavaScript script is divided into two stages:

In the first stage, the js engine () first scans the entire javascript code. When encountering

Latest Articles by Author

• Video material on building your own PHP framework from scratch
  2023-03-15 16:54:01
• Example analysis of how PHPMailer uses QQ mailbox to complete the email sending function
  2023-03-15 12:26:02
• Introduction to how to receive emails in IMAP in php
  2023-03-14 18:58:01
• Example of how to quickly implement array deduplication in PHP
  2023-03-14 11:30:01
• Summary of the use of all attributes of the tag in html
  1970-01-01 08:00:00
• Summary of basic knowledge of PHP (necessary for beginners to get started)
  2023-03-16 15:20:01
• Introduction to the use of typeof in JavaScript
  1970-01-01 08:00:00
• Introduction to the use of confirm() method in JavaScript
  1970-01-01 08:00:00
• A detailed introduction to the HTML5 Placeholder attribute
  1970-01-01 08:00:00
• How to implement single-select, multiple-select and reverse-select in forms in ReactJS
  1970-01-01 08:00:00

Latest Issues

function_exists() cannot determine the custom function Function test () {return true;} if (function_exists ('test')) {echo "test is function...

From 2024-04-29 11:01:01

0

3

2064

How to display the mobile version of Google Chrome Hello teacher, how can I change Google Chrome into a mobile version?

From 2024-04-23 00:22:19

0

11

2226

The child window operates the parent window, but the output does not respond. The first two sentences are executable, but the last sentence cannot be implemented.

From 2024-04-19 15:37:47

0

1

1872

There is no output in the parent window document.onclick = function(){ window.opener.document.write('I am the output of the child ...

From 2024-04-18 23:52:34

0

1

1753

Where is the courseware about CSS mind mapping? Courseware

From 2024-04-16 10:10:18

0

0

1786

Related Topics

More>

• What are the production methods of html5 animation production?
• The difference between HTML and HTML5
• How to register on Binance
• ppt insert page number
• What does legacy startup mean?
• How to open zip file
• How to generate bin file with mdk
• How to run code with vscode