/**
* 正则表达式静态属性
*/
print("RegExp.input = "+RegExp.input);
var pattern =/google/i;
var str =‘This is a google! That is a GOOGLE!‘;
pattern.test(str);//必须执行一下，静态属性才有效
//需要在浏览器中使用alert运行才能打印出当前的匹配字符串
print("RegExp.input = "+RegExp.input);
print("RegExp.leftContext = "+RegExp.leftContext);
print("RegExp.rightContext = "+RegExp.rightContext);
print("RegExp.lastMatch = "+RegExp.lastMatch);
var pattern2 =/(g)oogle/i;
var str2 =‘This is a gogle! That is a GOOGLE!‘;
pattern2.test(str2);
print("RegExp.lastParen = "+RegExp.lastParen);//会打印匹配的在圆括号里字符串
print("RegExp.multiline = "+RegExp.multiline);
/**
* 所有的属性可以通过短名来操作
*/
var pattern3 =/google/i;
var str3 =‘This is a google! That is a GOOGLE!‘;
pattern3.test(str3);
print("RegExp[‘$&‘] = "+RegExp[‘$&‘]);
print("RegExp.$_ = "+RegExp.$_);

/**
* 正则表达式实例属性
*/
var pattern1 =/google/;
var pattern2 =/google/g;
var pattern3 =/google/ig;
var pattern4 =/google/igm;
print("pattern1.global = "+ pattern1.global);
print("pattern2.global = "+ pattern2.global);
print("pattern2.ignoreCase = "+ pattern2.ignoreCase);
print("pattern3.ignoreCase = "+ pattern3.ignoreCase);
print("pattern3.ignoreCase = "+ pattern3.multiline);
print("pattern4.ignoreCase = "+ pattern4.multiline);
print("pattern4.source = "+ pattern4.source);
/**
* lastIndex动态属性
*/
var str =‘google google google‘;
print("pattern2.lastIndex = "+ pattern2.lastIndex);
for(var i =6;--i !=0;){
pattern2.test(str);
print("pattern2.lastIndex = "+ pattern2.lastIndex);
}
pattern2.lastIndex =100;
print("pattern2.lastIndex = "+ pattern2.lastIndex);

/**
* 点元字符：匹配除换行符外的任意字符
*/
var pattern1 =/g..gle/;
var str1 =‘google‘;
print("pattern1.test(str1) = "+ pattern1.test(str1));
print("pattern1.test(‘g\\ngle‘) = "+ pattern1.test(‘g\ngle‘));
print("pattern1.test(‘g12gle‘) = "+ pattern1.test(‘g12gle‘));
print("pattern1.test(‘g3gle‘) = "+ pattern1.test(‘g3gle‘));

/**
* [a-z]表示26个小写字母的任意一个
*/
var pattern1 =/[a-z]oogle/;
var str1 =‘google‘;
print("pattern1.test(str1) = "+ pattern1.test(str1));
print("pattern1.test(‘boogle‘) = "+ pattern1.test(‘boogle‘));
print("pattern1.test(‘6oogle‘) = "+ pattern1.test(‘6oogle‘));
var pattern2 =/[A-Z]oogle/;
print("pattern2.test(str1) = "+ pattern2.test(str1));
print("/[A-Z]oogle/i.test(str1) = "+/[A-Z]oogle/i.test(str1));
var pattern3 =/[0-9]oogle/;
print("pattern3.test(str1) = "+ pattern3.test(str1));
print("pattern3.test(‘4oogle‘) = "+ pattern3.test(‘4oogle‘));
print("pattern3.test(‘44oogle‘) = "+ pattern3.test(‘44oogle‘));
var pattern4 =/[0-9]*oogle/;//[0-9]*表示0个或多个数字
print("pattern4.test(‘444oogle‘) = "+ pattern4.test(‘444oogle‘));
var pattern5 =/[a-zA-Z0-9]oogle/;
print("pattern5.test(‘boogle‘) = "+ pattern5.test(‘boogle‘));
print("pattern5.test(‘Boogle‘) = "+ pattern5.test(‘Boogle‘));
print("pattern5.test(‘6oogle‘) = "+ pattern5.test(‘6oogle‘));
print("pattern5.test(‘oogle‘) = "+ pattern5.test(‘oogle‘));
var pattern6 =/[^0-9]oogle/;
print("pattern6.test(‘444oogle‘) = "+ pattern6.test(‘444oogle‘));
print("pattern6.test(‘_oogle‘) = "+ pattern6.test(‘_oogle‘));

/**
* 锚元字符
*/
var pattern1 =/^[0-9]oogle/;
var pattern2 =/^[0-9]+oogle/;
var str1 =‘4oogle‘;
var str2 =‘4444oogle‘;
print("pattern1.test(str1) = "+ pattern1.test(str1));
print("pattern1.test(str2) = "+ pattern1.test(str2));
print("pattern2.test(str1) = "+ pattern2.test(str1));
print("pattern2.test(str2) = "+ pattern2.test(str2));
var pattern3 =/\woogle/;
var pattern4 =/\Woogle/;
print("pattern3.test(‘aoogle‘) = "+ pattern3.test(‘aoogle‘));
print("pattern3.test(‘_oogle‘) = "+ pattern3.test(‘_oogle‘));
print("pattern3.test(‘-oogle‘) = "+ pattern3.test(‘-oogle‘));
print("pattern4.test(‘aoogle‘) = "+ pattern4.test(‘aoogle‘));
print("pattern4.test(‘_oogle‘) = "+ pattern4.test(‘_oogle‘));
print("pattern4.test(‘-oogle‘) = "+ pattern4.test(‘-oogle‘));
var pattern5 =/\doogle/;
var pattern6 =/\Doogle/;
print("pattern5.test(‘aoogle‘) = "+ pattern5.test(‘aoogle‘));
print("pattern5.test(‘9oogle‘) = "+ pattern5.test(‘9oogle‘));
print("pattern6.test(‘aoogle‘) = "+ pattern6.test(‘aoogle‘));
print("pattern6.test(‘9oogle‘) = "+ pattern6.test(‘9oogle‘));
var pattern7 =/^google/;
var pattern8 =/^[a-z]oog[0-9]$/;
var str3 =‘This is google search engine‘;
print("pattern7.test(str3) = "+ pattern7.test(str3));
print("pattern8.test(str3) = "+ pattern8.test(str3));
print("pattern8.test(‘google‘) = "+ pattern8.test(‘google‘));
print("pattern8.test(‘goog5‘) = "+ pattern8.test(‘goog5‘));

/**
* 空白字符
*/
var pattern1 =/goo gle/;
var str1 =‘goo gle‘;
print("pattern1.test(str1) = "+ pattern1.test(str1));
var pattern2 =/goo\sgle/;
var str2 =‘goo gle‘;
print("pattern2.test(str2) = "+ pattern2.test(str2));
print("/goo\\bgle/.test(str2) = "+/goo\bgle/.test(str2));
var pattern3 =/google\b/;
print("pattern3.test(‘google‘) = "+ pattern3.test(‘google‘));
print("pattern3.test(‘googleee‘) = "+ pattern3.test(‘googleee‘));

var pattern1 =/google|baidu|bing/;
var str1 =‘bing‘;
var str2 =‘soso‘;
var str3 =‘this is google‘;
print("pattern1.test(str1) = "+ pattern1.test(str1));
print("pattern1.test(str2) = "+ pattern1.test(str2));
print("pattern1.test(str3) = "+ pattern1.test(str3));

/**
* 贪婪与惰性
*/
var pattern1 =/[a-z]/;
var pattern2 =/[a-z]+/;
var pattern3 =/[a-z]+?/;
var pattern4 =/[a-z]+?/g;
var str1 =‘abcdef‘;
var ret1 = str1.replace(pattern1,‘1‘);
var ret2 = str1.replace(pattern2,‘1‘);
var ret3 = str1.replace(pattern3,‘1‘);
var ret4 = str1.replace(pattern4,‘1‘);
print("ret1 = "+ ret1);
print("ret2 = "+ ret2);
print("ret3 = "+ ret3);
print("ret4 = "+ ret4);
/**
* 禁止了贪婪，开启了全局
*/
var pattern5 =/8(.*)8/;
var pattern6 =/8(.*?)8/;
var pattern7 =/8(.*?)8/g;
var str2 =‘8google8 8google8 8google8 8google8‘;
var ret5 = str2.replace(pattern5,‘<strong>$1</strong>‘);
var ret6 = str2.replace(pattern6,‘<strong>$1</strong>‘);
var ret7 = str2.replace(pattern7,‘<strong>$1</strong>‘);
print("ret5 = "+ ret5);
print("ret6 = "+ ret6);
print("ret7 = "+ ret7);
/**
* 除了正则表达式里两边的8不要匹配
*/
var pattern8 =/8([^8]*)8/g;
var pattern9 =/8(.*)8/g;
var str3 =‘8google8 8google8 8google8‘;
var ret8 = str3.replace(pattern8,‘<strong>$1</strong>‘);
var ret9 = str3.replace(pattern9,‘<strong>$1</strong>‘);
print("ret8 = "+ ret8);
print("ret9 = "+ ret9);

/**
* 返回数组
*/
var pattern1 =/^[a-z]+\s[0-9]{4}$/;
var str1 =‘google 2015‘;
print("pattern1.test(str1) = "+ pattern1.test(str1));
var ret1 = pattern1.exec(str1);
print("ret1 = "+ ret1);
print("typeof ret1 = "+typeof ret1);
var pattern2 =/^[a-z]+/;
var ret2 = pattern2.exec(str1);
print("ret2 = "+ ret2);
print("typeof ret2 = "+typeof ret2);
/**
* 分组返回
*/
var pattern3 =/^([a-z]+)\s([0-9]{4})$/;
var ret3 = pattern3.exec(str1);
print("ret3 = "+ ret3);
print("typeof ret3 = "+typeof ret3);
print("ret3[0] = "+ ret3[0]);//匹配到的整个字符串
print("ret3[1] = "+ ret3[1]);//匹配到的第1个字符串
print("ret3[2] = "+ ret3[2]);//匹配到的第2个字符串
/**
* 捕获性分组，所有的分组都捕获返回
* 非捕获性分组只需要在不需要捕获的分组前加上?:
*/
var pattern4 =/(\d+)([a-z]+)/;
var pattern5 =/(\d+)(?:[a-z]+)/;
var str2 =‘123abc‘;
print("pattern4.exec(str2) = "+ pattern4.exec(str2));
print("pattern5.exec(str2) = "+ pattern5.exec(str2));
/**
* 分组嵌套
*/
var pattern6 =/(a?(b?(c?)))/;
var str3 =‘abc‘;
var ret4 = pattern6.exec(str3);
print("ret4 = "+ ret4);
print("ret4[1] = "+ ret4[1]);//匹配到第1个分组(a?(b?(c?)))
print("ret4[2] = "+ ret4[2]);//匹配到第2个分组(b?(c?))
print("ret4[3] = "+ ret4[3]);//匹配到第3个分组(c?)

/**
* 前瞻捕获
*/
var pattern1 =/goo(?=gle)/;
var str1 =‘goobbb‘;
var str2 =‘google‘;
var ret1 = pattern1.exec(str1);
var ret2 = pattern1.exec(str2);
print("ret1 = "+ ret1);
print("ret2 = "+ ret2);

/**
* 特殊字符匹配
* 用反斜杠转义正则里的特殊字符才能匹配
*/
var pattern2 =/\[/;
var str3 =‘[‘;
var ret3 = pattern2.exec(str3);
print("ret3 = "+ ret3);

/**
* 换行模式
*/
var pattern3 =/^\d+/;
var pattern4 =/^\d+/g;
var pattern5 =/^\d+/gm;
var str3 =‘1.baidu\n2.google\n3.bing‘;
var ret3 = str3.replace(pattern3,‘#‘);
var ret4 = str3.replace(pattern4,‘#‘);
var ret5 = str3.replace(pattern5,‘#‘);
print("ret3 = \n"+ ret3);
print("ret4 = \n"+ ret4);
print("ret5 = \n"+ ret5);

/**
* 邮政编码
* 必须是六位，必须是数字，首位不为零
*/
var pattern1 =/[1-9][0-9]{5}/;
var str1 =‘This is 224000!‘;
var ret1 = pattern1.test(str1);
print("ret1 = "+ ret1);
/**
* 压缩文件
* (文件名).(扩展名)
*/
var pattern2 =/^\w+\.zip|gz|rar$/;
var str2 =‘213.zip‘;
var ret2 = pattern2.test(str2);
print("ret2 = "+ ret2);
var str3 =‘21-3.zip‘;
var ret3 = pattern2.test(str3);
print("ret3 = "+ ret3);
/**
* 删除空格
*/
var pattern3 =/\s/g;
var str4 =‘111 222 33 44 555‘;
var ret4 = str4.replace(pattern3,‘‘);
print("ret4 = "+ ret4);
/**
* 删除首尾空格
*/
var pattern4 =/^\s+/;
var str5 =‘ goo gle ‘;
var ret5 = str5.replace(pattern4,‘‘);
print("ret5 = |"+ ret5 +"|");
var pattern5 =/\s+$/;
var ret6 = ret5.replace(pattern5,‘‘);
print("ret6 = |"+ ret6 +"|");
/**
* 删除首尾空格
* 使用惰性模式的分组匹配
*/
var pattern6 =/^\s+(.+)\s+$/;
var str6 =‘ goo gle ‘;
var ret7 = pattern6.exec(str6);
var str7 = ret7[1];
print("str7 = |"+ str7 +"|");
var pattern7 =/^\s+(.+?)\s+$/;
var str7 =‘ goo gle ‘;
var ret8 = pattern7.exec(str7);
var str8 = ret8[1];
print("str8 = |"+ str8 +"|");
var ret9 = str7.replace(pattern7,‘$1‘);
print("ret9 = |"+ ret9 +"|");
/**
* 简单电子邮件匹配
*/
var pattern8 =/^([\w\.\-]+)@([\w\-]+)\.([a-zA-Z]{2,4})$/;
var str8 =‘yuki@163.com‘;
var ret10 = pattern8.test(str8);
print("ret10 = "+ ret10);