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...
Learn the basics of the JavaScript `if` conditionalAn if statement is used to make the program take a route, or another, depending on the result of an expression evaluation.This is the simplest example, which always executes:if (true) { //do something }...
Using not (!) inside "if" statement in JS [SOLVED] IntroductionThere are different ways to phrase conditional logic. If we have a certain condition, let’s do this, else, let’s do that. This is the typical logic that guides conditional logic, and basically the if/else statement. ...
This simple example createdmyNumand set it to 7. We then checked to see ifmyNumwas equal to 7 ("myNum == 7") in theIf Statement'sconditional statement, evaluated toTrue. Because the conditional statement wasTruethe block of code associated with our If Statement ("document.write...") ...
当编写程序时,需要对上一步执行代码是否执行成功进行判断,可以用if语句进行判断。通过查看if语句执行的判断结果查看代码是否执行成功 当满足条件的代码块中有exit ,表示退出脚本执行 注意: 注意if和[]有空格,[]和condition也有空格隔开,运算符也有空格。缩进可以任意缩进 ...
[i] > 0: plt.plot(x[i], y[i], 'go') # 如果y[i]大于0,则绘制绿色圆点 else: plt.plot(x[i], y[i], 'ro') # 如果y[i]小于或等于0,则绘制红色圆点 # 添加标题和坐标轴标签 plt.title('Sine Wave with Conditional Coloring') plt.xlabel('X-axis') plt.ylabel('Y-axis') # 显示...
JS Math Functions JS Array Methods This JavaScript tutorial explains how to use the if-else statement with syntax and examples. Description 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. ...
There are several conditional statements in JavaScript that you can use to make decisions:The if statement The if...else statement The if...else if...else statement The switch...case statementWe will discuss each of these statements in detail in the coming sections.The...
In JavaScript we have the following conditional statements: Useifto specify a block of code to be executed, if a specified condition is true Useelseto specify a block of code to be executed, if the same condition is false Useelse ifto specify a new condition to test, if the first condit...
The switch conditional The for loop The while loop Introduction Perhaps, one of the most paramount aspects of modern-day programming is that of control flow. This chapter is devoted briefly exploring the different kinds of control flow constructs in JavaScript. But before that, let's quickly unde...