# 5. Practice Makes Perfect Keeps Crashing

#1

Browser keeps crashing

``````I don't know what's going on with my code; it keeps crashing my browser.

var count = 0;

var loop = function(){
while(count < 3){
console.log("I'm looping!");
count = count++;
}
};

loop();``````

#2

I'm not sure what this line executes as. There is a way to alter the code on this line that would allow your loop to run in a way that fulfills the exercise requirements.

#3

``count = count++; //  count is 0 = infinityloop``

I try to explain it

``````// Postfix
var x = 0;
var y = x++; // y = 0, x = 1

// PrÃ¤fix
var x = 0;
y = ++x; // x = 1, y = 1``````

That means:

``````count = ++count; // solve the issue
count++; // solve the issue too
++count; //Again is solved``````

#4

This doesn't work. I ran it on replit and jsbin. Infinite loop.

Like you mentioned here.

#5

That must be an error on jsbin

``````var count = 0;

var loop = function(){
while(count < 3){
console.log("I'm looping!");
count = ++count;
console.log(count);
}
};

loop();``````

Try it at jsbin, you will see no infinite Loop.
And than try it without console.log in Firefox or Chrome and here at codeacademy and you will see it worked.

#6

I see it now. When count = ++count, it runs. I don't get how. Count = count++ gives an infinity loop. I don't get why.

#7

How i can explain it better?
Maybe the defintion from MDN helps you

The increment operator increments (adds one to) its operand and returns a value.

If used postfix, with operator after operand (for example, x++), then it returns the value before incrementing.

``count = count++; // count is 0``

If used prefix with operator before operand (for example, ++x), then it returns the value after incrementing.

``count = ++count; // count is 1``

#8

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