Most Useful Javascript Console Methods Every Web Developer Should Know

As a web developer, it's important to be familiar with JavaScript console methods as they can greatly aid in debugging and testing your code. Here are some of the most useful JavaScript console methods every web developer should know:

Here are examples of each of the mentioned console methods:

1. console.log()

const name = "John";
const age = 25;
console.log("Name:", name, "Age:", age);

Output:

Name: John Age: 25

2. console.error()

console.error("An error occurred!");

Output:

An error occurred!

3. console.warn()

console.warn("This is a warning message!");

Output:

This is a warning message!

4. console.info()

console.info("This is an informational message.");

Output:

This is an informational message.

5. console.clear()

console.clear();

Output: (The console will be cleared)

6. console.table()

const fruits = ["apple", "banana", "orange"];
console.table(fruits);

Output:

(index)  Value
0        "apple"
1        "banana"
2        "orange"

7. console.assert()

const num = 10;
console.assert(num > 20, "Number should be greater than 20");

Output:

Assertion failed: Number should be greater than 20

8. console.time() and console.timeEnd()

console.time("myTimer");
for (let i = 0; i < 1000000; i++) {
  // Some time-consuming operation
}
console.timeEnd("myTimer");

Output:

myTimer: 1234.567ms

9. console.group() and console.groupEnd()

console.group("Group 1");
console.log("Message 1");
console.log("Message 2");
console.groupEnd();

console.group("Group 2");
console.log("Message 3");
console.log("Message 4");
console.groupEnd();

Output:

Group 1
  Message 1
  Message 2
Group 2
  Message 3
  Message 4

10. console.count()

function processItem(item) {
  console.count("Processed items");
  // Process the item
}

processItem("A");
processItem("B");
processItem("C");

Output:

Processed items: 1
Processed items: 2
Processed items: 3

Happy Coding! ❤️