Compare Setimmediate (func), SetTimeout (func), Process.nexttick (func)

The event priority mechanism in node:

Console.log (' The first pen! ‘);

Process.nexttick (function () {

Console.log (' Have a meal! ‘);

　　

Setimmediata (function () {

Console.log (' Wash hair 1! ‘);

});

});

Setimmediata (function () {

Console.log (' Wash hair 2! ‘);

});

Console.log (' Second pen! ‘);

Console.log (' The third pen! ‘);

Then the steps to be taken are

First Pen!

Second pen!

Third Pen!

Let's have a meal!

Wash Hair 2!

Wash Hair 1!

Setimmediata (func) has the lowest priority regardless of where it appears in the code.

Process.nexttick (func) has a lower priority regardless of where it appears in the code.

Compare Setimmediate (func), SetTimeout (func), Process.nexttick (func)