In the last tutorial we continued our discussion on String Objects in JavaScript. Hopefully we will wrap it up in this episode. We left off with the Match() method, which allowed us to search a string and return the same string if it was present in our variable, or return a null value if it was not. We will pick back up with the Replace() method.
JavaScript Objects: Finishing Strings - The Search() Method (Page 3 of 6 )
There are a lot of ways to find out if a string holds a particular value, as you have already seen. Why not add another? The Search() method will find your value and return its position in the string, or -1 if it fails to find it.
<html>
<body>
<script type="text/javascript">
var who="Go Go Gorillas!"
document.write(who.search("go") + "<br />")
document.write(who.search("Go") + "<br />")
document.write(who.search("Gorilla") + "<br />")
</script>
</body>
</html>
This results in:
-1 0 6
Since the Search() method is case-sensitive, it returned a -1 when searching for the word "go." To remedy this situation, we simply add an “i” as in our previous programs and replace the quotation marks with forward slashes(/):
JavaScript 
JavaScript Objects: More on String Methods
