String search() Method - Javascript String

Javascript examples for String:search

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Description

The search() method searches a string for a specified value or a regular expression, and returns the position of the match.

This method returns -1 if no match is found.

Parameter Values

Parameter Description
searchvalue Required. A regular expression. A string will automatically be converted to a regular expression.

Return Value:

A Number, representing the position of the first occurrence of the specified searchvalue, or -1 if no match is found

The following code shows how to search a string for "blue", and display the position of the match.

Demo Code

ResultView the demo in separate window 

<!DOCTYPE html>
<html>
<body>

<button onclick="myFunction()">Test</button>

<p id="demo"></p>

<script>
function myFunction() {/*from w w w. j  a v  a 2 s  .c o  m*/
    var str = "Blue red blue "
    var n = str.search(/blue/i);
    document.getElementById("demo").innerHTML = n;
}
</script>

</body>
</html>

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