Which of the following is the most efficient way to clone a JavaScript object?

Which code sample will correctly search for the word 'for' in a string?

Which is a valid syntax to create a function?

What's the output? var x = 1; { var x = 2; } alert(x);

Method to call a function or evaluate an expression at specified intervals?

Which code snippet deletes cookie correctly?

Output of the code: var a = 90100; function someFunc(){ if(false){ var a = 1; } else { var b = 2; } console.log(b); console.log(a); //(1) } someFunc();

What are the primitive data types in Javascript?

How can you add a property to an Object that is not enumerable in a for...in loop?

What is the original or first name of javascript?

var self=this; self.color='red'; self.getColor=function(){ return this.color; } self.getColor.call({color:'white'})); What is the return value?