string.gsub 函数有三个参数:目标串,模式串,替换串.基本作用是用来查找匹配模式的串,并将使用替换串其替换掉: s = string.gsub("Lua is good", "good", "bad?") print(s) --> Lua is bad string.gsub 的第二个返回值表示进行替换操作的次数.例如,下面代码计字符串中空格出现的次数: _, count = string.gsub("test te
匹配下列格式的数据中的 source和MAC地址: Chain WiFiDog_br-lan_Outgoing (1 references) pkts bytes target prot opt in out source destination 705 109595 MARK all -- * * 10.1.1.191 0.0.0.0/0 MAC C4:6A:B7:6F:7A:AB MARK or 0x200 705 109595 MARK all -- * * 10.1.1.192 0.0.
使用str.split("[",15)时,出现Exception in thread "main" java.util.regex.PatternSyntaxException: Unclosed character class near index 0 [ ^的问题 解决办法为在[加上\\转义 str.split("\\[",15)
function htmlEscape(str){ var s = ""; if(str.length == 0) return ""; s = str.replace(/&/g,"&"); s = s.replace(/</g,"<"); s = s.replace(/>/g,">"); s = s.replace(/ /g," "); s =