if/else
# Node.js
const array = [1, 2];
if (array) {
console.log("array exists");
}
if (array.length === 2) {
console.log("length is 2");
} else if (array.length === 1) {
console.log("length is 1");
} else {
console.log("length is other");
}
const isOddLength = array.length % 2 == 1 ? "yes" : "no";
console.log(isOddLength);
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Output
array exists
length is 2
no
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3
# Go
package main
import "fmt"
func main() {
array := []byte{1, 2}
if array != nil {
fmt.Println("array exists")
}
if len(array) == 2 {
fmt.Println("length is 2")
} else if len(array) == 1 {
fmt.Println("length is 1")
} else {
fmt.Println("length is other")
}
// closest thing to ternary operator
isOddLength := "no"
if len(array)%2 == 1 {
isOddLength = "yes"
}
fmt.Println(isOddLength)
}
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Output
array exists
length is 2
no
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3
编辑 (opens new window)
上次更新: 2022/09/30, 11:34:22