What would be the output of setImmediate and setTimeout in the following code:
console.log("11111");
setImmediate(function A(){
console.log("2222");
});
console.log("3333");
setTimeout(function B(){
console.log("4444");
},0);
console.log("5555");
Output:
11111
3333
5555
4444
2222
when i change time in setTimeout time to 10, output :
11111
3333
5555
2222
4444
Can anybody explain me this behaviour?
The setImmediate() is used to break up long running operations and run a callback function immediately after the browser has completed other operations such as events and display updates.
The setTimeout() calls a function or evaluates an expression after a specified number of milliseconds. Which mean even if the browser has not completed yet, it is already working a function inside.
When you put 10 means, it will works only after 10 milliseconds which is most likely your browser has completed already.