Console in javaScript

console in JavaScript
A Web console is a tool which is mainly used to log information associated with a web page
like: network requests, javascript, security errors, warnings, CSS etc. It enables us to interact
with a web page by executing javascript expression in the contents of the page.

console in
JavaScript
• log()
• error()
• warn()
• clear()
• time() and timeEnd()
• table()
• count()
• group() and groupEnd()
• custom console logs

console.log() method
console.log('abc');
console.log(1);
console.log(true);
console.log(null);
console.log(undefined);

JavaScript in string/
Magic of backtick ``
Add any JavaScript inside
backtick using ${}

Custom Console Logs
const spacing = '10px';
const styles =
`padding: ${spacing}; background-color: white; color: red;
font-style:
italic; border: 1px solid black; font-size: 2em;`;
console.log(‘%Learn With Vivek', styles);

console.error()
Used to log error message to the console. Useful in testing of code.
By default the error message will be highlighted with red color.
console.error('This is a simple error');

console.warn()
Used to log warning message to the console. By default the
warning message will be highlighted with yellow color.
console.warn('This is a warning.');

Assignment
• clear()
• time() and timeEnd()
• table()
• count()
• group() and groupEnd()
• custom console logs

Console in javaScript

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