JavaScript

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Food Emulsifier

Ved Nurul Aqila

ANTIBODY AND ANTIGEN

Ved Yolanda Soto

WordPress

Ved Ragnar Lodbrock

3314 Bassett

Ved David Bassett

Validación de datos

del cliente

del servidor

puede validar la entrada numérica

The else if Statement

if (condition1) { // block of code to be executed if condition1 is true } else if (condition2) { // block of code to be executed if the condition1 is false and condition2 is true } else { // block of code to be executed if the condition1 is false and condition2 is false }

The else Statement

if (condition) { // block of code to be executed if the condition is true } else { // block of code to be executed if the condition is false }

The if Statement

if (condition) { // block of code to be executed if the condition is true }

Comparing Different Types

age = Number(age); if (isNaN(age)) { voteable = "Input is not a number"; } else { voteable = (age < 18) ? "Too young" : "Old enough"; }

Conditional (Ternary) Operator

variablename = (condition) ? value1:value2

How Can it be Used

if (age < 18) text = "Too young";

Comparison Operators

true

Subtema

.abs()

Math.abs(-4.7); // returns 4.7

.sqrt ()

Math.sqrt(64); // returns 8

.pow()

Math.pow(8, 2); // returns 64

.round(x)

Math.round(4.7); // returns 5

JavaScript

Validation

if else and else if

Comparison and Logical Operators

Math Object