The HTML DOM Input Search pattern property is used for setting or returning the pattern attribute of an input search field. It checks the search field time against a regular expression that is specified by the pattern property.
Syntax
Following is the syntax for −
Setting the pattern property −
searchObject.pattern = regexp
Here, regexp is a regular expression against which the search field is checked.
Example
Let us look at an example for the Input Search pattern property −
<!DOCTYPE html>
<html>
<body>
<h1>Input Search pattern property</h1>
<p>The time inside search field can either be of three numeric characters or 6 alphabet characters from a to g</p>
<form action="/Sample_page.php">
FRUITS: <input type="search" id="SEARCH1" name="fruits" pattern="[0-9]{3}|[a-g]{6}"
title="Three numeric character or 6 alphabet between a-g">
<input type="submit">
</form>
<br>
<button onclick="passPattern()">GET PATTERN</button>
<p id="Sample"></p>
<script>
function passPattern() {
var P = document.getElementById("SEARCH1").pattern;
document.getElementById("Sample").innerHTML ="The pattern attribute value is"+ P;
}
</script>
</body>
</html>Output
This will produce the following output −
On entering text inside search field that is not matched by regex specified in the pattern property −
On clicking the GET PATTERN button −
