lovecoding
/
W250511


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        // \b 单词边界
        const reg1 = /\ban\b/ig;
        const str1 = 'an Apple,an Ant';
        console.log(str1.match(reg1));
        // ^ 匹配字母首行
        const reg2 = /^ab/;
        console.log(reg2.test("aabab"));
        // $ 匹配字母尾行
        const reg3 = /ab$/;
        console.log(reg3.test("aababb"));
        
        const reg4 = /^a$/;
        console.log(reg4.test('aaa'));
        console.log(reg4.test('a'));
        console.log(reg4.test(' '));
    </script>
</body>
</html>