JavaScript Test 3

Which of the following values converts to false when used in Boolean conversion?

What is the result of 0 || "Hello" in JavaScript?

What is the output?

let i = 5;
do {
  console.log(i);
  i++;
} while (i < 5);

What is the result of:

let arr = [10, 20, 30];
arr.shift();
console.log(arr);

Which of the following is a valid function expression?

What will the following code output?

let car = { brand: "Tesla", model: "X" };
console.log(Object.values(car));

In non-strict mode, what does this refer to inside a standalone function?

How do you add a newly created element p to the body?

Which statement is true about arrow functions?

What does an async function always return?

What is the type of Symbol("id")?

If let a = 5; a += 3; then what is the value of a?

What is the output?

let arr = ["a", "b", "c"];
for (let val of arr) {
  console.log(val);
}

What is the result of:

let arr = [20, 30];
arr.unshift(10);
console.log(arr);

Which variable has function scope in JavaScript?

Which operator checks if an object has a given property?

What does the following print?

function greet() {
  console.log(this.language);
}
greet.call({ language: "JavaScript" });

How can you change the src attribute of an image with ID pic?

What is the value of x after this code?

let [x, y] = [10, 20];

What does the await keyword do?