Use the following code to create a basic inputEx MultiAutoComplete. (note: this example doesn't work offline)
var field = new Y.inputEx.MultiAutoCompleteCustom( { label: 'Tags', parentEl: 'container1', maxItems:6, uniqueness: true, maxItemsAlert:function(){alert("You're limited to 6 tags")}, // autocompleter options autoComp: { forceSelection: true, minQueryLength: 2, maxResultsDisplayed: 50, source: ["tag1","tag2","tag4","tag25"] } }); var logDiv = inputEx.cn('div', null, null, ""); Y.one('#container1').appendChild(logDiv); field.on("updated",function(v) { var value = Y.JSON.stringify(v); logDiv.appendChild( inputEx.cn('div',null,null,"Updated at "+(new Date())+" "+value) ); });