Web front-end data verification component

The interaction between the client and the server in a web project is inseparable from the Form form. The most commonly used element in the Form form is the input tag. The first thing to use for the input tag must be the text text box!

The input text box allows users to input arbitrarily. It is inevitable that users will input some data that does not meet the regulations. At this time, it is necessary to verify the data before submitting it. If you wait until it is submitted to the server and then verify it, It will greatly reduce the user experience.

There are many ready-made components for front-end verification. One of the more useful ones is EasyUI's validatebox plug-in. The prompt interface is quite friendly, but the validation rules provided by validatebox by default are relatively limited. Sometimes we need to add our own validation rules.

rules: {
  email:{
  validator: function(value){
   return ...?$/i.test(value);
  },
  message: 'Please enter a valid email address.'
  },
  url: {
  validator: function(value){
   return ...?$/i.test(value);
  },
  message: 'Please enter a valid URL.'
  },
  length: {
  validator: function(value, param){
   var len = $.trim(value).length;
   return len >= param[0] && len <= param[1]
  },
  message: 'Please enter a value between {0} and {1}.'
  },
  remote: {
  validator: function(value, param){
   var data = {};
   data[param[1]] = value;
   var response = $.ajax({
   url:param[0],
   dataType:'json',
   data:data,
   async:false,
   cache:false,
   type:'post'
   }).responseText;
   return response == 'true';
  },
  message: 'Please fix this field.'
  }
 },

Customized verification rules

When adding new verification rules, it is best not to do it in the source files of EasyUI. The first is to avoid contaminating the EasyUi source code due to misoperation, and more importantly, it is easy to upgrade components in the future. So the most reasonable way is to write your own expansion file separately.

For example: I added the following three checks based on the original rules, in a separate file easyui-extend-rcm.js:

(function($) {
 /**
 * jQuery EasyUI 1.4 --- 功能扩展
 * 
 * Copyright (c) 2009-2015 RCM
 *
 * 新增 validatebox 校验规则
 *
 */
 $.extend($.fn.validatebox.defaults.rules, {
 idcard: {
  validator: function(value, param) {
  return idCardNoUtil.checkIdCardNo(value);
  },
  message: '请输入正确的身份证号码'
 },
 checkNum: {
  validator: function(value, param) {
  return /^([0-9]+)$/.test(value);
  },
  message: '请输入整数'
 },
 checkFloat: {
  validator: function(value, param) {
  return /^[+|-]?([0-9]+\.[0-9]+)|[0-9]+$/.test(value);
  },
  message: '请输入合法数字'
 }
 });
})(jQuery);

How to use custom rules
In addition to introducing EasyUI files, you must also introduce your own extension files, in order after the EasyUI files:

<span style="font-size:18px;"><script src="#WEBROOT</p>
<div class="jb51code">
<div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false">
()/static/jseasyui/jquery.easyui.min.js" type="text/javascript" ></script>
<script src="#WEBROOT()/static/js/comm/easyui-extend-rcm.js" type="text/javascript"></script></span>

<pre name="code" class="<a href=" http:="" www.jb51.net="" kf="" qianduan="" css="" "="" target="_blank">html"><span style="font-size:18px;"><div id="dlg" class="easyui-dialog" style="width:300px; height:300px; vertical-align: middle;" closed="true" title="'添加中药'" buttons="#dlg-buttons">
 <div id="editForm" style="background:'';padding:20px;width:200px;height:200px; display:none;">
 <form id="form" method="post">
  <div style="padding-left:16px;padding-top:20px;" hidden="true">
  <input type="text" name="dlg_drugId" id="dlg_drugId" hidden="true">
  </div>
  <div style="padding-top:10px;padding-left:40px;">
  <label for="dlg_name">药物:</label>
  <input type="text" name="dlg_name" id="dlg_name" class="easyui-validatebox" readonly="readonly">
  </div>
  <div style="padding-top:10px;padding-left:40px;">
  <label for="dlg_price">单价:</label>
  <input type="text" name="dlg_price" id="dlg_price" <span="" style="color:#ff0000;">class="easyui-validatebox" data-options="required:true,validType:'checkFloat'" />
  </div>
  <div style="padding-top:10px;padding-left:40px;">
  <label for="dlg_purchase_price">进价:</label>
  <input type="text" name="dlg_purchase_price" id="dlg_purchase_price" <span="" style="color:#ff0000;">class="easyui-validatebox" data-options="validType:'checkFloat'" />
  </div>
  <div style="padding-top:10px;padding-left:40px;">
  <label for="dlg_stock">库存:</label>
  <input type="text" name="dlg_stock" id="dlg_stock" <span="" style="color:#ff0000;">class="easyui-validatebox" data-options="validType:'checkNum'" />
  </div>
  <div style="padding-top:10px;padding-left:40px;" align="center">
  <input type="button" value="保存" onclick="saveTCMDrugPublicMapped()" class="bt_style">
  </div>
 </form>
 </div>
</div></span>

数据校验显示效果

效果如下图所以：