JavaScript non-stop (setInterval)/delay (setTimeout) function usage examples_javascript skills

setTimeout(script,millisecond); is the number of microseconds from now to run the code (only runs once)
setInterval(script,millisecond); is the number of microseconds to run the code
Example:
1. Execute once

<span id="time"></span> seconds
[Ctrl A Select all Note: If you need to introduce external Js, you need to refresh to execute

]

2. Copy and execute

<span id="time"> </span> 3 seconds
[Ctrl A Select all Note:

If you need to introduce external Js, you need to refresh to execute it
]

setTimeout can also be made repeated Execute <span id="time"></span>
seconds

[Ctrl A select all Note: If you need to introduce external Js, you need to refresh to execute ]