To use JavaScript RegExp to match any string containing zero or more p's, use the p* quantifier.
You can try running the following code to match any string containing zero or more p's. Here, p is considered to be the number of occurrences -
<html>
<head>
<title>JavaScript Regular Expression</title>
</head>
<body>
<script>
var myStr = "Welcome! Wweeeelcome to our website!";
var reg = /el*/g;
var match = myStr.match(reg);
document.write(match);
</script>
</body>
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