JavaScript console.log() method is “used to write (log) a message to the console”. The console.log() method is helpful in testing.
To enable more advanced formatting, it can also accept format specifiers, such as %s for strings, %d or %i for integers, and %f for floating-point numbers.
Syntax
console.log(message)Parameters
“message”: The parameter is required, which is the message to write to the console.
Return value
None.
Example 1: How to Use console.log() Method
console.log("Homer, Simpson!");
const fname = "Bart Simpson";
const age = 9;
console.log('My name is', fname, 'and I am', age, 'years old.');
console.log('My name is %s and I am %d years old.', fname, age);
Output
Homer, Simpson!
My name is Bart Simpson and I am 9 years old.
My name is Bart Simpson and I am 9 years old.Example 2: Passing a character to the console.log() method
If you pass a char to the function console.log(), the function will display it.
let char = "21";
console.log(char);Output
21
Example 3: Passing a function to the console.log() method
If you pass a function as an argument, the console.log() method will display the value of the passed function.
function meth() {
return (21 * 19);
}
console.log(meth());
Output
399Example 4: Passing a number to the console.log() method
If you pass the number to the console.log() method, it will display it with a provided message.
let num = 21;
console.log("The value of num is: ", num);
Output
The value of num is: 21Browser compatibility
All the browsers support it.
That’s it.
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