How can the style/class of an element be changed?

1000

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Explain the difference between “==” and “===”?

1091

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Which symbol is used for comments in Javascript?

1793

---

What is callback?

1210

---

Enumerate the differences between Java and JavaScript?

1234

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How to create an object in javascript?

1238

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What are global variables? How are these variable declared and what are the problems associated with using them?

981

---

What would be the result of 3+2+”7″?

1485

---

What are undeclared and undefined variables?

1020

---

Which company developed JavaScript?

1049

---

What is the use of isNaN function?

971

---

Explain the working of timers in JavaScript? Also elucidate the drawbacks of using the timer, if any?

1012

---

Explain how can you submit a form using JavaScript?

936

---

Between JavaScript and an ASP script, which is faster?

1188

---

What is Node.js? What is it used for?

530

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