JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js"></script>
<link rel="stylesheet" href="//cdn.bootcss.com/bootstrap/4.0.0-alpha.5/css/bootstrap-flex.css">
<div class="container">
  <h3>input change事件演示</h3>
  <table id="table" class="table table-bordered">
  <thead>
    <tr>
      <th>指标</th>
      <th>杨树</th>
      <th>柳树</th>
      <th>橡树</th>
      <th>桃树</th>
      <th>松树</th>
    </tr>
  </thead>
  <tbody>
    <tr>
    <td>年初存量</td>
      <td>
        <input type="text">
      </td>
      <td>
        <input type="text">
      </td>
      <td>
        <input type="text">
      </td>
      <td>
        <input type="text">
      </td>
      <td>
        <input type="text">
      </td>
    </tr>
    <tr>
      <td>存量增加</td>
      <td>
        <input type="text">
      </td>
      <td>
        <input type="text">
      </td>
      <td>
        <input type="text">
      </td>
      <td>
        <input type="text">
      </td>
      <td>
        <input type="text">
      </td>
    </tr>
    <tr>
    <td>存量减少</td>
      <td>
        <input type="text">
      </td>
      <td>
        <input type="text">
      </td>
      <td>
        <input type="text">
      </td>
      <td>
        <input type="text">
      </td>
      <td>
        <input type="text">
      </td>
    </tr><tr>
    <td>年末存量</td>
      <td>
        <input type="text">
      </td>
      <td>
        <input type="text">
      </td>
      <td>
        <input type="text">
      </td>
      <td>
        <input type="text">
      </td>
      <td>
        <input type="text">
      </td>
    </tr>
  </tbody>
</table>

</div>

CSS

.table thead{
  background: #123;
  color:#fff;
}
.table thead th{
  text-align:center;
}
.table input{
  width:80px;
}

JavaScript

$(function(){
	$('#table input').map(function(){
  	$(this).change(function(){
     	var pattern = /^-?\d+\.?\d*$/;// 验证实数
      if(!pattern.test(this.value)){
      	this.style.color = '#f00';
      }else{
      	this.style.color = '#000';
      }
    });
  })
});