You don't know the JavaScript rolled up reading notes

<! DOCTYPE html>{let J;  for(j=0;j<10;j++) {Let I=J;        Console.log (i); }    }    //An investigation of a simple packet closure scope    functionfoo () {varB=a*2; functionBar (c) {console.log (a,b,c); } bar (b*); } foo (2);//2 4   //Sequencing is not necessarily a reliablea=2; varA;    Console.log (a); //demo of closures    functionfoo () {vara=2; functionBar () {Console.log (a); }        returnBar (); }    varbaz=foo (); //Loops and closures     for(vari=1;i<=5;i++){        (function() {setTimeout (functiontimer () {console.log (i); },i*1000)        })(); }    //adjustment allows the above loops and closures to work properly     for(vari=1;i<=5;i++){        (function(j) {SetTimeout (functiontimer () {console.log (j); },j*1000)}) (i); }    //let's do it for once.     for(Let i=1;i<=5;i++) {setTimeout (functiontimer () {console.log (i); },i*1000)    }</script>

You don't know the JavaScript rolled up reading notes