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This article mainly explains "JavaScript how to achieve callback as a parameter transfer", the content of the article is simple and clear, easy to learn and understand, now please follow the editor's train of thought slowly in depth, together to study and learn "JavaScript how to achieve callback as parameter transfer" bar!

A callback is a function that is passed as an argument to another function

This technique allows a function to call another function

The callback function can be run after another function completes.

Function sequence

The JavaScript functions are executed in the order in which they are called. Not in the order in which they are defined.

This example will eventually display "Goodbye":

Example

Function myFirst () {

MyDisplayer ("Hello")

}

Function mySecond () {

MyDisplayer ("Goodbye")

}

MyFirst ()

MySecond ()

This example will eventually show "Hello":

Example

Function myFirst () {

MyDisplayer ("Hello")

}

Function mySecond () {

MyDisplayer ("Goodbye")

}

MySecond ()

MyFirst ()

Thank you for your reading. the above is the content of "how to achieve callback as parameter transfer in JavaScript". After the study of this article, I believe you have a deeper understanding of how to achieve callback as parameter transfer in JavaScript, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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