How to set delay for a few seconds by javascript
This article mainly introduces the relevant knowledge of javascript how to set delay for a few seconds, the content is detailed and easy to understand, the operation is simple and fast, and has a certain reference value. I believe you will gain something after reading this javascript article on how to set delay for a few seconds. Let's take a look at it.
In JavaScript, you can use the setTimeout () method to set a delay of several seconds, which is used to call a function or evaluate an expression after a specified number of milliseconds, with the syntax "setTimeout (code to be executed, number of milliseconds to wait)".
The operating environment of this tutorial: windows10 system, javascript1.8.5 version, Dell G3 computer.
How does javascript set delay for a few seconds?
SetTimeout () is a method belonging to window that is used to call a function or evaluate an expression after a specified number of milliseconds.
Syntax formats can be in the following two ways:
SetTimeout (code to be executed, milliseconds to wait) setTimeout (JavaScript function, milliseconds to wait)
Examples are as follows:
SetTimeout ("alert ('this appears in 3 seconds')", 3000)
Output result after 3 seconds:
Examples are as follows:
Function timedMsg () {var t=setTimeout ("alert ('5 secondsgiving')", 5000)}
Click the button above. A message box is displayed after 5 seconds.
Output result:
Click the button for 5 seconds to output the result:
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