​x
 
<!DOCTYPE html>
<html>
<body>
​
<h2>JavaScript String 方法</h2>
​
<p>indexOf() 方法接受第二个参数作为搜索的起始位置：</p>
​
<p id="demo"></p>
​
<script>
let str = "Please locate where 'locate' occurs!";
document.getElementById("demo").innerHTML = str.indexOf("locate",15);
</script>
​
</body>
</html>
​