JS questions

lexical-scoping-txt

function foo() {
    console.log(abc)
}
function goo() {
    var abc = 1;  
    foo();
}
goo();

// ReferenceError: abc is not defined

*Note- foo method can't use abc variable as abc is not present in lexical scope chain.

For foo function lexical scope chain is like - foo scope -> global scope

----------------------------------------------------

function goo() {
    var abc = 1;  
    function foo() {
        console.log(abc)
    }
    foo();
}

goo();

// 1

*Note- For foo function lexical scope chain is like here - foo scope -> goo scope -> global scope