js判断字符串大小

let str1 = "apple";
let str2 = "banana";

if (str1 < str2) {
    console.log(str1 + " comes before " + str2);
} else if (str1 > str2) {
    console.log(str1 + " comes after " + str2);
} else {
    console.log(str1 + " is equal to " + str2);
}

let str1 = "äpfel"; // 德语中的"苹果"
let str2 = "apfel";

let comparisonResult = str1.localeCompare(str2);

if (comparisonResult < 0) {
    console.log(str1 + " comes before " + str2);
} else if (comparisonResult > 0) {
    console.log(str1 + " comes after " + str2);
} else {
    console.log(str1 + " is equal to " + str2);
}

let str1 = "Apple";
let str2 = "apple";

if (str1.toLowerCase() === str2.toLowerCase()) {
    console.log("Strings are equal, ignoring case");
} else {
    console.log("Strings are not equal");
}