Tag Archives: JavaScript

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Javascript Step by Step

Javascript Step by Step JavaScript is the most popular scripting language on the internet, and works in all major browsers, such as Internet Explorer, Firefox, Chrome, Opera, and Safari. Before you continue you should have a basic understanding of the following: HTML / XHTML. What Is JavaScript? JavaScript was designed to add interactivity to HTML pages JavaScript is […]

Javascript time clock

Javascript Time Clock Display a clock on your web page. <html> <head> <script type=”text/javascript”> function startTime() { var today=new Date(); var h=today.getHours(); var m=today.getMinutes(); var s=today.getSeconds(); // add a zero in front of numbers<10 m=checkTime(m); s=checkTime(s); document.getElementById(‘txt’).innerHTML=h+”:”+m+”:”+s; t=setTimeout(‘startTime()’,500); } function checkTime(i) { if (i<10) { i=”0″ + i; } return i; } </script> </head> <body […]

JavaScript Browser Detection

JavaScript Browser Detection Java Script browser detection is based on the “navigator” object, which could just be thought of as the browser. Browser Properties Java Script defines eight properties browsers can report: Browser Properties Description appCodeName Specifies the code name of the browser. appName Specifies the name of the browser. appVersion Specifies version information for […]

JavaScript Throw Statement

JavaScript Throw Statement The throw statement generates an error condition that can be handled by a try…catch statement. The throw statement allows you to create an exception. The throw statement allows you to create an exception. If you use this statement together with the try…catch statement, you can control program flow and generate accurate error […]

JavaScript For…In Statement

JavaScript For…In Statement The for…in statement is used to loop (iterate) through the elements of an array or through the properties of an object. The for…in statement iterates a specified variable over all the properties of an object. For each distinct property, JavaScript executes the specified statements. A for…in statement looks as follows: Syntax for (variable in […]

JavaScript Break and Continue Statements

There are two special statements in JavaScript that can be used inside loops: break and continue. Break Statement We Use the break statement to terminate a loop, switch, or label statement. When we use break without a label, it terminates the innermost enclosing while, do-while, for, or switch immediately and transfers control to the following […]