js string比较大小

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

if (str1 < str2) {
    console.log("str1 is less than str2");
} else if (str1 > str2) {
    console.log("str1 is greater than str2");
} else {
    console.log("str1 is equal to str2");
}

let strA = "Hello";
let strB = "hello";

if (strA.toLowerCase() === strB.toLowerCase()) {
    console.log("Strings are equal regardless of case");
} else {
    console.log("Strings are not equal");
}

let strC = "  apple ";
let strD = "apple";

if (strC.trim() === strD.trim()) {
    console.log("Strings are equal after trimming spaces");
} else {
    console.log("Strings are not equal");
}

let collator = new Intl.Collator('en', { sensitivity: 'base' });
let strE = "coöperate";
let strF = "co-operate";

if (collator.compare(strE, strF) === 0) {
    console.log("Strings are considered equal in a locale-sensitive way");
} else {
    console.log("Strings are not considered equal");
}