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In order to detect the operating system on the client machine, the navigator.appVersionstring (property) should be used. To detect the operating system on the client machine in web development, you can use JavaScript. Here’s a way to achieve this: javascriptCopy code var operatingSystem = “Unknown OS”; if (navigator.appVersion.indexOf(“Win”) != -1) operatingSystem = “Windows”; if (navigator.appVersion.indexOf(“Mac”) … Read more

I/O operations like reading or writing a file is not possible with client-side javascript. However , this can be done by coding a Java applet that reads files for the script. In JavaScript, you can read and write files using various methods, depending on whether you’re working on the client-side (browser) or the server-side (Node.js). … Read more

JavaScript is a platform-independent,event-driven, interpreted client-side scripting andprogramming language developed by Netscape Communications Corp. and Sun Microsystems. For a web development interview question asking, “What is JavaScript?” the correct answer would be: JavaScript is a high-level, interpreted programming language primarily used to add interactivity and dynamic behavior to web pages. Originally developed by Brendan Eich … Read more

Use DIV tags with CSS for laying out the web pages and use TABLE for representing data.Tabular data represented using html table tag. Div tags are generally used to layout web page elements without using tables, because tables are heavy wighted than div tags. The traditional way of laying out web pages was to place them inside invisible … Read more

It is a bad practice to have a DIV element nested inside a SPAN element. You can have a SPAN inside a DIV. The reason being the DIV is a block element and SPAN is an inline element. So, why would you want to have a block element inside an inline element? SPAN is a like sub tag, which applies styles for the … Read more