For-loop that is skipping even count-CodePudding

i have a small for loop, but it is skipping even count , what am I missing ?

var i = 0;
function myLoop() {
    setTimeout(function() {
        //code below
        console.log(Date()   ' and count is '   i  );
        //code above
        if (i < 20) {
            myLoop();
        }
    }, i  )
}
myLoop()

CodePudding user response：

Your i in the console.log statement is modifying your i variable.

i is equal to i = i 1.

Replace i with (i 1), which will evaluate correctly without modifying i in the process.

This works:

var i = 0;

function myLoop() {
  setTimeout(function() {
    //code below
    console.log(Date()   ' and count is '   (i   1));
    //code above
    if (i < 20) {
      myLoop();
    }
  }, i  )
}
myLoop()

CodePudding user response：

i is equal i = i 1; But when you call console.log(i ), first thing wil be console.log with Old value, and after increment your value.