In relation to object oriented JavaScript, which of the following options are the correct attributes of the object properties?

What's the output? var str1 = 'Hi world'; var str = 'Apples are round, and apples are juicy'; var sliced = str.slice(5, -2); var text =`Apple \nJuice` var raw_text = String.raw`Apple \nJuice` console.log(str1.valueOf()); console.log(raw_text) console.log(sliced); console.log(text)

What's the output? s2 = new String('2 + 2') document.write(eval(s2));

What's the output? var main = function() { var i=2,j=0,k=0,m=1.5,s=0; while(i<=3) { j=1; while(j<=4) { k=1; while(k<=4) { if(k%2!==0) { s=s+i+j+m; k++; } else { k++; m++; } } j=j+2; m++; } i++; m++; } console.log(s); } main();

function test(){ return { test:1 }; } alert(typeof test()); What will be the above alert ?

Which result is returned by the JavaScript operator 'typeof' for the keyword 'null'?

Which 'if' statement is correctly used to get the size of both 'variable1' and 'variable2' objects? var variable1 = {'name':'theName', 'address':'theAddress','age': '18'} var variable2 = ['theName','theAddress','18']; variable1["name"] = "theName2"; variable1["name"] = "theName3"; variable1["name2"] = "theName4"; variable1["name2"] = "theName5"; Object.size = function(importer) { var exporter = 0, key; for (key in importer) { if (importer.hasOwnProperty(key)) exporter++; } return exporter; };

Which will correctly check if a variable is undefined in JavaScript?

Final value of the variable bar in the following code? var foo = 9; bar = 5; (function() { var foo = 2; bar= 1; }()) bar = bar + foo;

Which is a good reason why JavaScript variables would start with a dollar sign ($)?

Difference between call() and apply()?