methods in js code example
Example 1: java classes and methods
import java.lang.Math;
import java.util.Scanner;
public class HelloWorld {
public static void main(String[] args) {
class ResultNumberShape {
double number;
public boolean isSquare(double number) {
double result = Math.sqrt(number);
return ((result - Math.floor(result)) == 0);
}
}
ResultNumberShape checkNumber = new ResultNumberShape();
System.out.println("Enter any number:");
Scanner scanner = new Scanner(System.in);
double num = scanner.nextDouble();
scanner.close();
if (checkNumber.isSquare(num)) {
System.out.println(num + " is a sqaure number!");
} else {
System.out.println(num + " is not a square!");
}
}
}
Example 2: object methods in javascript
/// OBJECTS IN JAVASCRIPT
const testScore = {
damon: 89,
shawn: 91,
keenan: 80,
kim: 89,
};
Object.keys(testScore); // gives all keys
Object.values(testScore); // gives all values
Object.entries(testScore); // gives nested arrays of key-value pairs
// YOU CAN USE ( FOR-IN ) LOOP FOR ITERATION OVER OBJECTS
for (let person in testScore) {...}
// WE CAN'T DIRECTLY USE ( FOR-OF ) LOOP IN OBJECTS BUT WE CAN DO Like THIS:
for(let score of Object.values(testScore)){
console.log(score) // 89 91 80 89
}
Example 3: array methods in javascript
<script>
// Defining function to get unique values from an array
function getUnique(array){
var uniqueArray = [];
// Loop through array values
for(var value of array){
if(uniqueArray.indexOf(value) === -1){
uniqueArray.push(value);
}
}
return uniqueArray;
}
var names = ["John", "Peter", "Clark", "Harry", "John", "Alice"];
var uniqueNames = getUnique(names);
console.log(uniqueNames); // Prints: ["John", "Peter", "Clark", "Harry", "Alice"]
</script>
Example 4: variables in js class
constructor(){
this.foo = bar
}
Example 5: what is a javascript method
JavaScript methods are actions that can be performed on syntax.
Examples of methods include syntax ending with ();
Examples:
console.log();
toUpperCase();
Math.floor();
They help change original syntax in various ways.