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JavaScript RegExp Character 正则表达式字符类
tryjs_regexp_0-9_2
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<!DOCTYPE html> <html> <body> <h1>Regular Expressions</h1> <h2>Using [] to find a range of characters</h2> <p>A global search for the numbers 1, 2, 3, and 4 in a string:</p> <p id="demo"></p> <script> let text = "123456789"; const pattern = /[1234]/g; let result = text.match(pattern); document.getElementById("demo").innerHTML = result; </script> </body> </html>