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stepanmas/Собеседование: use strict

Last active December 26, 2018 08:44
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Собеседование: use strict
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Собеседование: use strict
'use strict'
x = 5; // error! next examples with let x
console.log(++x); // 6
console.log(x++); // 6
function foo() {
console.log(x); // undefined, because there is x below
x += 5;
console.log(x); // NaN
var x = 2;
console.log(x); // 2
}
foo();
console.log(x); // 7
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