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1 546
What is the output of the following code:
var x = [1, 2, 3];
x.push(4); console.log(x);
1 546
What is the output of the following code:
var x = 5;
var y = “10”; console.log(x + y);
1 546
What is the output of the following code:
var x = [1, 2, 3];
console.log(x[0]);
1 546
What is the output of the following code:
var x = true;
var y = false; console.log(x || y);
1 546
What is the output of the following code:
var x = “hello”;
console.log(x.toUpperCase());
1 546
What is the output of the following code:
var x = 10;
var y = “5”; console.log(x – y);
1 546
What is the output of the following code:
var x = [1, 2, 3];
x.push(4); console.log(x);
1 546
What is the output of the following code:
var x = “5”;
var y = 2; console.log(x + y);
1 546
What is the output of the following code:
var x = 5;
console.log(typeof x);
1 546
What is the output of the following code:
var x = “hello”;
console.log(x.charAt(0));
1 546
What is the output of the following code:
var x = [1, 2, 3];
console.log(x.length);
1 546
What is the output of the following code:
var x = [1, 2, 3];
var y = x.slice(1); console.log(y);
1 546
What is the output of the following code:
var x = 5;
var y = x++; console.log(y);
1 546
What is the output of the following code:
console.log(NaN == NaN);
1 546
Which of the following is not a valid way to create a JavaScript array?
1 546
What is the output of the following code:
console.log(2 + 3 + “4”);
1 546
What is the output of the following code:
var x = 5;
function foo() { console.log(x); } function bar() { var x = 10; foo(); } bar();
1 546
What is the output of the following code:
console.log(“Hello”.charAt(1));
1 546
What is the output of the following code:
console.log(typeof null);
1 546
Which of the following is not a valid way to declare a variable in JavaScript?
