What are some examples of JavaScript console commands?

What are some examples of JavaScript console commands?

JavaScript console commands are used for debugging and testing code in the browser's console. Here are a few examples:

1. console.log('Hello, World!') - Logs a message to the console.
2. console.error('This is an error!') - Logs an error message.
3. console.warn('This is a warning!') - Logs a warning message.
4. console.table(array) - Displays data in a table format.
5. console.time('label') and console.timeEnd('label') - Measures the time taken for a block of code.

Can you explain how to use console.table?

Sure! The console.table() method takes an array or an object and displays it in a table format in the console. For example:

const fruits = [
  { name: 'Apple', color: 'Red' },
  { name: 'Banana', color: 'Yellow' },
  { name: 'Grapes', color: 'Purple' }
];

console.table(fruits);

This will show a table with the fruit names and their colors.

What about measuring performance with console.time?

You can use console.time() to start a timer and console.timeEnd() to stop it and log the elapsed time. For example:

console.time('myFunction');
myFunction();
console.timeEnd('myFunction');

This will log how long myFunction took to execute.

Are there any other useful console commands?

Yes, there are many! Some other useful commands include:

• console.group() and console.groupEnd() to group related log messages.
• console.assert(condition, message) to log a message if the condition is false.
• console.clear() to clear the console.