代码示例:(标识:jsck_localecompare_2)
<!DOCTYPE html>
<html>
<body>

<h1>JavaScript 字符串</h1>

<h2>localeCompare() 方法</h2>

<p>localeCompare() 返回指示排序顺序的三个数之一。</p> 

<ul>
  <li>-1,如果在之前排序</li>
  <li>1,如果在之后排序</li>
  <li>0,如果相等</li> 
</ul>

<p>比较 "cd" 和 "ab":</p>

<p id="demo"></p>

<script>
let text1 = "cd";
let text2 = "ab";
let result = text1.localeCompare(text2);

document.getElementById("demo").innerHTML = result;
</script>

</body>
</html>
运行结果: