Mastering the JavaScript Console: Tips and Tricks for Debugging and Development


In javascript, the console is an object which provides access to the browser debugging console. We can open a console in web browser. The console object provides us with several different methods :

  • log()
  • error()
  • warn()
  • clear()
  • time() and timeEnd()
  • table()
  • count()
  • custom console logs

The JavaScript console is a built-in object in the browser that provides access to the browser's developer console. The developer console is a tool that allows developers to view and debug their code, as well as run JavaScript commands directly in the browser. The console object provides a number of methods for logging information to the console, such as console.log(), console.info(), console.warn(), and console.error(). These methods can be used to output data to the console, which can be useful for debugging and understanding the behavior of a JavaScript application. Additionally, the console object also provides methods for measuring performance, such as console.time() and console.timeEnd(), and for grouping and collapsing output in the console using console.group() and console.groupEnd().

Source Code

HTML Code
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Tutor Joes</title>
</head>
<body>
 
	<script src="js/script.js"></script>
</body>
</html>
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script.js
//alert("Welcome to Js for External File");
 
console.log("Welcome To Tutor Joes");
console.log(123456);
console.log(18.25);
console.log(true);
console.log([58,78,96,35]);
console.log({fname:'Joes',age:25});
console.table({fname:'Joes',age:25});
console.error("Custom Sample Error");
console.warn("Custom Sample Error");
console.clear();
console.time("Timer");
for(i=0;i<10;i++)
{
  console.log(i);
}
console.timeEnd("Timer");
 
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