28 29 3d javascript

1❤ We will always love you javascript! ❤

1let str = "12345.00";
2str = str.substring(0, str.length - 1);
3console.log(str);

1// The usual way of writing function
2const magic = function() {
3  return new Date();
4};
5
6// Arrow function syntax is used to rewrite the function
7const magic = () => {
8  return new Date();
9};
10//or
11const magic = () => new Date();
12
13

1const person = {
2    firstName: 'Viggo',
3    lastName: 'Mortensen',
4    fullName: function () {
5        return `${this.firstName} ${this.lastName}`
6    },
7    shoutName: function () {
8        setTimeout(() => {
9            //keyword 'this' in arrow functions refers to the value of 'this' when the function is created
10            console.log(this);
11            console.log(this.fullName())
12        }, 3000)
13    }
14}

1const javascript = 'Hello world';
2
3console.log(javascript);

1//Normal function
2function sum(a, b) {
3  return a + b;
4}
5
6//Arraw function
7let sum = (a, b) => a + b;