if (condition) { //Code be run when the condition is truthy } Example of Writing an if Statement in JavaScript Let us write a short script to show you how the if statement works within JavaScript. In this script, we will get the current day of the week and use a conditional statement...
When you write code, you will often need to use conditional statements, such as "if" statements. Here's an explanation of the JavaScript If statement.A conditional statement refers to a piece of code that does one thing based on one condition, and another based on another condition. In ...
Use theelse ifstatement to specify a new condition if the first condition is false. Syntax if(condition1) { //block of code to be executed if condition1 is true }elseif(condition2) { //block of code to be executed if the condition1 is false and condition2 is true ...
In all the programming languages I’ve come across, the If statement is extensively used for this purpose.It’s actually quite simple to use the if statement and here is the format of an if statement. if (condition) { statements to execute } When JavaScript encounters an if statement, ...
The statement is used to create a conditional branch that runs only when the condition for the statement is fulfilled. To use theifstatement, you need to specify the condition in parentheses: if(10>5){console.log("Ten is bigger than five");} ...
This JavaScript tutorial explains how to use the if-else statement with syntax and examples. In JavaScript, the if-else statement is used to execute code when a condition is TRUE, or execute different code if the condition evaluates to FALSE.
JavaScript includes three forms of if condition: if condition, if else condition and else if condition. The if condition must have conditional expression in brackets () followed by single statement or code block wrapped with. 'else if' statement must be placed after if condition. It can be us...
if...else if...else 语句- 使用该语句来选择多个代码块之一来执行 switch 语句- 使用该语句来选择多个代码块之一来执行 (1)if 语句 只有当指定条件为 true 时,该语句才会执行代码。 语法: if (condition) { 当条件为 true 时执行的代码 } 请
[else if (condition_n_1) { statement_n_1; }] [else { statement_n; }] 要执行多个语句,可以使用语句块({ ... }) 来分组这些语句。一般情况下,总是使用语句块是一个好的习惯,特别是在代码涉及比较多的 if 语句时: if (条件) { 当条件为真的时候,执行语句1; ...
if (condition) { // block of code // execute this if condition is true } else { // block of code // execute this if condition is false }The if...else statement checks the condition and executes code in two ways:If condition is true, the code inside if is executed. And, the ...