html
<p> Tags:<input name="tags" id="tags" /></p>
jquery
$('#tags').tagit( {tagLimit:3});
I want to control the size of input field,how can i do that ?
If you look at the dynamic HTML that is generated by the tag-it plugin, ul.tagit is the class assigned to the UL that is generated. So to set the width to 200px in your CSS set:
ul.tagit {
width: 200px;
}