Interesting and Most Useful JavaScript Console Functions
In this article, I will discuss interesting & most useful JavaScript console methods.
The console helps to write or print a message from JavaScript.
- console.group(message) ,
- console.groupEnd(message)
- console.groupCollapsed(message)
- console.count() ,
- console.countReset()
Above Methods explained in Advance Console API
Read This also — Console Tricks to Become Master In Debugging using DevTool
Let’s see the most useful console API :
1 ) console.trace()
console.trace() function helps to trace your function and print console in the stack.
Example :
const fnOne = () => { fnTwo(); };
const fnTwo = () => { fnThree(); };
const fnThree = () => { fnFour(); };
const fnFour = () => { console.trace(); };
fnOne();
Above example, fnOne() call the function fnTwo, and fnTwo call fnThree like it will trace and print the console of execution order.
Output :
2 ) console.assert()
console.assert() function helps to check assertion test using console , it will throw error when test fail.
Example :
const a = 8;
const b = 4;
const mes = ‘a is expected to be less than b’;
console.assert(a < b, {a, b, mes});
Output :
3 ) console.time()
console.time() function start a new timer in the stack and it runs continuously. to stop the timer call console.timeEnd().
This console.time() and console.timeEnd() helps to find how much time takes to run function.
Example :
console.time();
for (var i = 0; i < 20000; i++) {
let cube = i ** 3;
}
console.timeEnd();
Output :
4 ) console.dir()
console.dir() function helps to print the given object in JSON representation.
console.dir() function accpects HTML DOM object as well as.
Example :
console.dir(document.head);
const superWebsite = {
name:’attractiveaurora’,
url:’www.attractiveaurora.com'
}
console.dir(superWebsite);
Output :
5 ) console.dirxml()
console.dirxml() function helps to print descendants of the given HTML node in XML representation.
Example :
console.dirxml(document.head);
Output :
6 ) console.table()
This console.table() function helps to view your object and array in table format.
console.table() function accepts object and index arrays and array of objects.
Example :
console.log(‘Array of object’)
console.table([
{
follows: ‘Attractive Aurora’,
link: ‘https://www.attractiveaurora.com/',
},
{
follows: ‘Medium’,
link: ‘https://medium.com/@attractiveaurora',
},
{
follows: ‘Facebook’,
link: ‘https://www.facebook.com/attractiveaurora',
},
]);
console.log(‘Object’)
console.table({
name: ‘Attractive Aurora’,
site: ‘https://www.attractiveaurora.com/',
},)
console.log(‘Indexed Array’)
console.table([‘Welcome’,’To’,’Attractive Aurora’])
Output :
I will share the remaining API functions in the next article
I think this information is helpful to you.
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Originally published at https://www.attractiveaurora.com on October 4, 2021.
