var vs let

Open the developer console to see the result

var o=0;console.log("👍🏻 i before loop",o);for(o=0;o<=3;o++)console.log("       i inside loop:",o);console.log("😈 i after loop:",o);console.log("👍🏻 j before loop",0);for(let o=0;o<=3;o++)console.log("       j inside loop:",o);console.log("😀 j after loop:",0);
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