JavaScriptWhat is doctype in HTML in start of HTML file?HTML DOCTYPE HTMLRelated JavaScript interview topicsContinue with nearby questions from the same topic cluster.What is the difference between == and === in JavaScript?How does error propagation work in JavaScript?What is the event loop in JavaScript?What is currying in JavaScript?How do you get query string values in JavaScript?What are the pros and cons of compiling to JavaScript? Previous TopicWhat are default parameters?Next Topic Why is document.write() considered bad practice?