IF声明弄错了？[重复]

Question

嘿，我是javascript的初学者，我遇到了这个问题。IF语句似乎将变量识别为它不是的东西。我想这和OR操作员有关？

let variabel = `a variable with random value`;

if (variabel === `a` || `b`){
    console.log(`the variable is the same as a or b`)
} else {
    console.log(`not the same`)
}

因此它确实表示变量与控制台中的a或b相同。那么if语句是真的吗？但事实并非如此？




Answer 1

正确使用或就是这样

let variabel = `a variable with random value`;

if (variabel === `a` || variabel === `b`){
    console.log(`the variable is the same as a or b`)
} else {
    console.log(`not the same`)
}

Answer 2

正确的语法是：

js prettyprint-override">let variabel = `a variable with random value`;

if (variabel === `a` || variabel === `b`){
    console.log(`the variable is the same as a or b`)
} else {
    console.log(`not the same`)
}