What does foo() return? function foo(){ var tmp = 'one_two_three_four_five'; return tmp.replace(/_/g, '+'); }

Which is NOT a valid arithmetic operator?

What is the logical not operator in JavaScript?

What is the value of x? var obj = {}; obj['function'] = 123; x = obj.function;

Is this a valid multidimensional array? var myArray = [[1,2,3], 'Hello', [6,7,8]];

What does the try statement do?

Which will return only the src attribute of an tag while using the post_thumbnail() function in WordPress?

Which deprecated functions are still in use in WordPress?

Which cannot be used to output content from WordPress?

How can the class name of a sub-menu be changed in the wp_nav_menu?

Right order (by priority in use) to display page in Template Hierarchy?