样式：
<style type="text/css">a{background: transparent;text-decoration: none;}.form-wrap{position: relative;box-shadow: inset 0 0 10px rgba(0,0,0,0.2);border: 1px solid #e1e1e0;}.tokenfield{transition: min-height 120ms;height: auto;min-height: 87px;max-height: 200px;overflow-x: hidden;overflow-y: auto;box-shadow: none;border: none;background: none;}.tokenfield.form-control{padding: 7px;}.form-control{display: block;width: 100%;font-size: 13px;line-height: 1.42857;color: #333;vertical-align: middle;border-radius: 0;}.tokenfield .token.invalid{background: none;border: 1px solid transparent;border-radius: 0;border-bottom: 1px dotted #b94a48;}.tokenfield .token{box-sizing: border-box;display: inline-block;margin: -1px 5px 5px 0;vertical-align: top;cursor: default;padding: 0 7px;height: 24px;line-height: 24px;font-size: 13px;}.tokenfield .token .token-label{display: inline-block;overflow: hidden;text-overflow: ellipsis;font-size: 13px;color: gray;white-space: nowrap;}.tokenfield .token .close{margin-left: 0;font-size: 15px;}.close{font-family: "Hiragino Sans GB" ,simsun, "Microsoft YaHei" ,sans-serif;display: inline-block;line-height: 24px;}.close{float: right;font-weight: bold;color: #000;text-shadow: 0 1px 0 #fff;opacity: 0.2;filter: alpha(opacity=20);}.tokenfield .token-input{background: none; /*min-width: 60px;
width: 100%;
*/border: 1px solid transparent;line-height: 24px;font-size: 13px;box-shadow: none;height: 24px;padding: 0;}.tokenfield .token-input:focus{border-color: transparent;outline: 0;box-shadow: none;}.form-wrap .notice{color: #ccc;font-size: 12px;padding: 0 10px 5px;}</style>

<script language="javascript">$(function () { $("a.close").live("click", function () {$(this).parent().remove();return false;});$("input.token-input").keyup(function (event) {var event = window.event || event;if (event.keyCode == 13) {if ($(this).val() != "") {var strHTML = "<div class=\"token invalid\" data-value=\"" + $(this).val() + "\"><span class=\"token-label\" style=\"max-width: 251px;\">" + $(this).val() + "</span><a href=\"#\"  class=\"close\" tabindex=\"-1\">×</a></div>";$(this).val("");$(this).before(strHTML);$(this).focus();}}});});</script>

<div style="width: 500px"><div class="form-wrap"><div class="tokenfield form-control"><div class="token invalid" data-value="发送到发送到"><span class="token-label" style="max-width: 251px;">发送到发送到</span><a href="#" class="close"tabindex="-1">×</a></div><div class="token invalid" data-value="吃的发送到发送到发送到发送到"><span class="token-label" style="max-width: 251px;">吃的发送到发送到发送到发送到</span><a href="#"  class="close" tabindex="-1">×</a></div><input type="text" class="token-input" autocomplete="off" placeholder="" id="1410764747876174-tokenfield"  tabindex="0" style="min-width: 90px; width: 124px;"><div class="notice">最多可同时查询20条运单号，请以逗号、空格或回车键隔开。</div></div></div></div>