<style>
 .block {
 display:flex;
 flex-direction:row;
 align-items:center;
 width:500px;
 height:30px;
 border:1px solid #ddd;
 padding:10px;
 margin:100px auto 0;
 }
 #wordTags {
 display:flex;
 flex-wrap:nowrap;
 }
 input{
 width:100%;
 height:20px;
 border:none;
 }
</style>

<div class="block">
 <div id="wordTags"></div>
 <input id="wordInput" type="text" name="" placeholder="请输入关键词以空格结尾">
 <input id="wordHiddenInput" type="hidden" name="">
</div>

<script src="https://cdn.bootcss.com/jquery/1.12.4/jquery.js"></script>
<script type="text/javascript" src="aspect.js"></script>
<script type="text/javascript" src="keyWord.js"></script>

$(function () {
 var keyWord = $("#wordInput").keyWord({
 panel: '#wordTags',
 value: '#wordHiddenInput',
 max: 3,
 tips: '最多只能输入3项'
 });

 keyWord.init('php,java,前端开发')
});