Why is it usually better to work with Objects instead of Arrays to store a collection of records?

Which statement is true about the "async" attribute for the HTML script tag?

How do you import the lodash library making it top-level Api available as the "_" variable?

What does the following expression evaluate to? [] == [];

What type of function can have its execution suspended and then resumed at a later point?

Which statement is true about Functional Programming?

What is the value of x? var x = '1'+2+3;

var a = {1: 'one',2:'two',3:'three'}; var b = Object.keys(a); What's the value of b?

(function( ) { var x = foo( ); function foo( ){ return 'foobar' }; return x; })( ); What does this function return?

Which event fires whenever a control loses focus?

In JavaScript, to call a function directly, you use: