Input field for Tags separated by comma
Solution 1:
Something similar like Stack Overflow does:
- Allows alphanumeric and
+-.#(and trims whitespaces!) - Convert to lowercase
- Create automatically the Tag Box on focusOut Enter , (add more
|delimited keyCodes) - Delete Tag Box on click (with confirmation)
$(function(){ // DOM ready
// ::: TAGS BOX
$("#tags input").on({
focusout : function() {
var txt = this.value.replace(/[^a-z0-9\+\-\.\#]/ig,''); // allowed characters
if(txt) $("<span/>", {text:txt.toLowerCase(), insertBefore:this});
this.value = "";
},
keyup : function(ev) {
// if: comma|enter (delimit more keyCodes with | pipe)
if(/(188|13)/.test(ev.which)) $(this).focusout();
}
});
$('#tags').on('click', 'span', function() {
if(confirm("Remove "+ $(this).text() +"?")) $(this).remove();
});
});#tags{
float:left;
border:1px solid #ccc;
padding:5px;
font-family:Arial;
}
#tags > span{
cursor:pointer;
display:block;
float:left;
color:#fff;
background:#789;
padding:5px;
padding-right:25px;
margin:4px;
}
#tags > span:hover{
opacity:0.7;
}
#tags > span:after{
position:absolute;
content:"×";
border:1px solid;
padding:2px 5px;
margin-left:3px;
font-size:11px;
}
#tags > input{
background:#eee;
border:0;
margin:4px;
padding:7px;
width:auto;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="tags">
<span>php</span>
<span>c++</span>
<span>jquery</span>
<input type="text" value="" placeholder="Add a tag" />
</div>Solution 2:
You don't necessarily need to reinvent the wheel here. A number of libraries/plugins for this purpose already exist, one of which is Guillermo Rauch's TextboxList. You can find a demonstration here. It already has autocomplete support and a pretty extensive API, which is what the major hurdles in any implementation of this are going to be.
The original implementation used MooTools, but you can find a jQuery version by golive here.