该方法返回一个String对象的一个子集。
语法
string.substring(indexA, [indexB])
下面是参数的详细信息:
返回值:
例子:
<html><head><title>JavaScript String substring() Method</title></head><body><script type="text/javascript">var str = "Apples are round, and apples are juicy.";document.write("(1,2): " + str.substring(1,2));document.write("<br />(0,10): " + str.substring(0, 10));document.write("<br />(5): " + str.substring(5));</script></body></html>
这将产生以下结果:
(1,2): p(0,10): Apples are(5): s are round, and apples are juicy.
新闻热点
疑难解答