how to implement a function that returns 0 or 1
each time it is executedbeginner js, wants to implement a toggel function similar to jQuery
related codes
// :
fn(){}
fn() //0 1
//fn()
// :
fn(){}
fn() //0 1
//fn()var fn = (function(){
var bool = true;
return function(){
bool = !bool;
console.log(bool ? 1 : 0);
}
})()
fn()
fn()// flag=truefalse
function toggle(flag){
return !flag
}the first reaction is also closure
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