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

<h1>JavaScript 字符串方法</h1>

<p>slice() 提取字符串的某个部分,并在新字符串中返回被提取的部分。</p>

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

<script>
var str = "Apple, Banana, Mango";
var res = str.slice(-13,-7);
document.getElementById("demo").innerHTML = res;
</script>

</body>
</html>
运行结果: