}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 ...
为了减少if-else语句的使用并提高代码的可读性,我们可以使用三元运算符(ternaryoperator)。三元运算符允许在一行代码中根据条件进行简洁的赋值操作。其基本语法为condition ? expr1 :expr2,其中如果条件为真,则返回expr1,否则返回expr2。通过使用三元运算符,我们可以将繁琐的if-else语句简化为一行代码,提高代码的简洁性...
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...
Learn the basics of the JavaScript Ternary OperatorThe ternary operator is the only operator in JavaScript that works with 3 operands, and it’s a short way to express conditionals.This is how it looks:<condition> ? <expression> : <expression> ...
A ternary operator is a three-operand operator that is supported in most programming languages, including JavaScript, Java, C++, C#, and many others. It is also referred to as a conditional operator because it is considered to be a more concise alternative to the conditional (if-else) stateme...
JavaScript provides a special operator called ternary operator :? that assigns a value to a variable based on some condition. This is the short form of the if else condition. Syntax: <condition> ? <value1> : <value2>; The ternary operator starts with conditional expression followed by the ...
Example: JavaScript Ternary Conditional Operator varage=18;varcanVote;if(age>=18){canVote='yes';}else{canVote='no';} The above example shows a conditional statement executed using the traditionalif ... elsestatement. varage=18;varcanVote=age>=18?'yes':'no'; ...
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!'; ...
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; } } } //...
The void OperatorThe void operator evaluates an expression and returns undefined. This operator is often used to obtain the undefined primitive value, using "void(0)" (useful when evaluating an expression without using the return value).Example Useless link Click me to change the background co...