展开其元素连接到结果中: varalpha=['a','b','c'],numeric=[1,2,3];varalphaNumeric=alpha.concat(numeric);console.log(alphaNumeric
Delimiters WhenusingthePCREfunctions,itisrequiredthatthepatternisenclosedbydelimiters.Adelimitercanbeanynon-alphanumeric
1,2,3,4,5,6,7,8,9] 将值连接到数组 以下代码将三个值连接到数组: varalpha=['a','b','c'];varalphaNumeric=alpha.concat(1,[2,3]);console.log(alphaNumeric
\t\n\f\r])\wwordcharacters(==[0-9A-Za-z_])\Wnotwordcharacters(==[^0-9A-Za-z_]) ASCII字符类: [[:alnum:]]alphanumeric
alphaNumeric 值只能是[a-zA-Z0-9]组成,alphaNumeric:true。