正则表达式小练-----筛选图片格式

最新推荐文章于 2023-11-09 16:22:08 发布

原创

最新推荐文章于 2023-11-09 16:22:08 发布 · 2.1k 阅读

0 ·

CC 4.0 BY-SA版权

本文主要介绍了正则表达式的两种核心方法在筛选图片格式中的使用，包括reg.exec()和reg.test()。通过这两个方法，可以有效地从字符串中匹配并验证常见的图片文件格式。

正则只有两个方法，其它都是String的方法。

正则两个方法是：A reg.exec() B reg.test().

JS部分：

			window.onload=function(){
				var json1={
				    "country":"china",
				    "place":[
					    {"name":"beijing","imageSrc":"beijing.jpg"},
					    {"name":"helan","imageSrc":"helan.jpg"},
					    {"name":"sicuan","imageSrc":"sicuan.png"},
					    {"name":"hebei","imageSrc":"hebei.gif"},
					    {"name":"chengdu","imageSrc":"chengdu.jpg"},
					    {"name":"xiamen","imageSrc":"beijing.jpg"},
					    {"name":"jilin","imageSrc":"jilin.png"},
					    {"name":"taiwan","imageSrc":"taiwan.JPEG"},
					    {"name":"qinhai","imageSrc":"qinhai.jpg"},
					    {"name":"gansu","imageSrc":"gansu.png"},
					    {"name":"xian","imageSrc":"xian.jpg"},
					    {"name":"emei","imageSrc":"emei.png"},
					    {"name":"fujian","imageSrc":"fujian.gif"},
					    {"name":"lijiang","imageSrc":"lijiang.jpg"},
					    {"