Question d’entretien chez Julfar Consultancy Services

How web work? Describe the concept of hoisting in JavaScript. How do you handle asynchronous operations in JavaScript? Provide examples. Explain the differences between let, const, and var for variable declarations. Explain the differences between HTML5 and previous versions of HTML. How do you center an element horizontally and vertically using CSS? What are media queries in CSS, and how are they used for responsive web design? How can you optimize a website's loading speed and performance? What are some techniques to reduce render-blocking resources in a web page?