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What is the purpose of special characters in JavaScript regular expressions?
- WBOYforward
- 2023-08-20 14:57:23953browse
Character sequences and individual characters whose frequency or position are enclosed in parentheses can be represented by special characters. Each special character has a specific meaning. The , *, ? and $ signs all follow a sequence of characters.
| Serial number | Expression and description |
|---|---|
| 1 |
p It matches any string containing one or more p. |
| 2 |
p* It matches anything containing zero A string of one or more p's. |
| 3 |
p? It matches anything containing up to A string of p. |
| 4 | ##p{N}It matches any A string containing N p |
| p{2 ,3}It matches any string containing two or three p's. | |
| ##p{2, } | It matches Any string containing at least two p's. |
| p$ | It matches ending with p any string. |
| ^p | It matches starting with p any string. |
You can try running the following code to understand how to use special characters in JavaScript regular expressions-
<html>
<head>
<title>JavaScript Regular Expressions</title>
</head>
<body>
<script>
var myStr = "Welcome to our website! Welcome to Tutorialspoint!";
var reg = /Wel*/g;
var match = myStr.match(reg);
document.write(match);
</script>
</body>
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