JavaScript Advanced Programming-(1) using JavaScript in HTML

Using JavaScript in HTML

1. Delaying the script

The script tag defines the defer attribute, which is deferred until the entire page has been parsed and then run

The detailed contents are as follows:

2. Asynchronous scripting

The script tag defines the async attribute, which async applies to external script files, tells the browser to download the file immediately, and marks the async script as not saved in the order specified

The detailed contents are as follows:

JavaScript Advanced Programming-(1) using JavaScript in HTML