}elseif(userInput == 3) { monthName= "March"; }else{ monthName= "Unknown month number"} alert(monthName); ternary operator基于多个条件的例子:在以下的例子中,if-else-if语句会被ternary operator所取代 varuserInput = Number(prompt("Please enter a month number - 1, 2 or 3"));varmonthName ...
A ternary operator can be used to replace anif..elsestatement in certain situations. Before you learn about ternary operators, be sure to check theJavaScript if...else tutorial. What is a Ternary operator? A ternary operator evaluates a condition and executes a block of code based on the co...
In JavaScript, the ternary operator also allows conditional chains where the right-side condition chains into another ternary operator. By chaining ternary operators, you effectively write an “if ...else if ... else” conditional chain. But, of course, you have to be careful that chaining the...
Example: JavaScript Ternary Conditional Operator Example: JavaScript Nested Ternary Operators Example: Multiple Operations in the JavaScript Ternary Operator This tutorial will introduce how to use the ?: conditional operator in JavaScript. ADVERTISEMENT The if ... else statement helps us execute a ...
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20-Ternary Operator This is a good code protection program when you only want to write theif..else // Longhand const age = 18; let greetings; if (age < 18) { greetings = 'You are not old enough'; } else { greetings = 'You are young!'; ...
This is the short form of the if else condition. Syntax: <condition> ? <value1> : <value2>; The ternary operator starts with conditional expression followed by the ? operator. The second part (after ? and before :) will be executed if the condition turns out to be true. Suppose, ...
//Same example using the ternary operator[condition] ? [if] : [else]isOnline ?console.log("He is Online.") :console.log("He is Offline.");//He is Online 如你所见,三元运算符可以轻松的仅用一行代码编写条件语句。它在小条件下非常有用...
ConditionalExpr: a ternary conditional expression; member predicates ConditionalExpr.getCondition(), ConditionalExpr.getConsequent() and ConditionalExpr.getAlternate() provide access to the condition expression, the “then” expression and the “else” expression, respectively. InvokeExpr: a function call...
eslint: no-else-return // bad function foo() { if (x) { return x; } else { return y; } } // bad function cats() { if (x) { return x; } else if (y) { return y; } } // bad function dogs() { if (x) { return x; } else { if (y) { return y; } } } //...