About self-executing functions

When we are using a for loop, but do not expect the value of the variable in the for loop to affect the loop value in other functions,

We can put the for loop in the self-executing function, for example

for (Var i=0;i<5;i++) {

Console.log (i);

}

If we do not want to be affected by the use of I after the For loop, you only need to write this

(function () {

for (Var i=0;i<5;i++) {

Console.log (i);

}

｝）（）；

Self-circulation Three kinds of wording:

1. (function () {}) ();

2. (function () {} ());

3. +function () {} ();

About self-executing functions