<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>009</title>
<style type="text/css">
.found
{
background-color: #ff0;
}
</style>
</head>
<body>
<form id="textserach">
<textarea id="incoming" cols="100" rows="10"></textarea>
<p>
Search pattern: <input type="text" id="pattern">
</p>
</form>
<button id="searchSubmit">Search for pattern</button>
<div id="searchResult"></div>
</body>
<script type="text/javascript">
document.getElementById("searchSubmit").onclick=function(){
var pattern = document.getElementById("pattern").value;
var re = new RegExp(pattern,"g");
var searchString = document.getElementById("incoming").value;
var resultString = searchString.replace(re, "<span class='found'>$&</span>");
document.getElementById("searchResult").innerHTML = resultString;
}
</script>
</html>
