英文| https://betterprogramming.pub/5-ways-to-refactor-if-else-statements-in-javascript-functions-2865a4bbfe29 翻译| 小爱 在本文中,我将介绍5种通过不必要的if-else语句来整理代码的方法。我将讨论默认参数,或(||)运算符,空位合并,可选链no-e...
英文| https://betterprogramming.pub/5-ways-to-refactor-if-else-statements-in-javascript-functions-2865a4bbfe29 翻译| 小爱 在本文中,我将介绍5种通过不必要的if-else语句来整理代码的方法。我将讨论默认参数,或(||)运算符,空位合并,可选链no-else-returns,和保护子句。 1、默认参数 你知道在使用不一致...
function functionName(arg0, arg1, ... argN) { statements } 1. 2. 3. function sayHi(sName, sMessage) { alert("Hello " + sName + sMessage); } 1. 2. 3. 如何调用函数? 函数可以通过其名字加上括号中的参数进行调用,如果有多个参数。 如果您想调用上例中的那个函数,可以使用如下的代码: sayHi...
The if/else statement is a part of JavaScript's "Conditional" Statements, which are used to perform different actions based on different conditions. In JavaScript we have the following conditional statements: Useifto specify a block of code to be executed, if a specified condition is true ...
The syntax for the else if statement in JavaScript is: if (condition1) { // statements to execute when condition1 is TRUE } else if (condition2) { // statements to execute when condition1 is FALSE and condition2 is TRUE } else { // statements to execute when both condition1 and cond...
Over the next few sections, we will touch on the the following conditional statements in JavaScript: “if“, “if...else“, “if...else if“, “if...else if...else“. You Might Also Like JavaScript JavaScript Logical Operators 7 min readRead More → JavaScript Using a for Loop in...
As your JavaScript programs get more sophisticated, you will need to make use of conditional statements that allow your program to make decisions. Nearly all other programming languages use conditionals, and JavaScript is no exception. Advertise on Tizag.com ...
The Else If statement is an extension to the If Statement that allows you to create as many checks (conditional statements) as you want in one big block of If Statement code.JavaScript Else If ExampleImagine that you want to have a small "student" script that will print out a customized ...
In this tutorial you will learn how to write the decision-making code using if...else...else if conditional statements in JavaScript.JavaScript Conditional StatementsLike many other programming languages, JavaScript also allows you to write code that perform different actions based on the results of...
In JavaScript we have the following conditional statements:Use if to specify a block of code to be executed, if a specified condition is true Use else to specify a block of code to be executed, if the same condition is false Use else if to specify a new condition to test, if the ...