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自动生成表格案例-2018年04月16日00时59分
植树青年小江同志的博客
Original
491 people have browsed it

前端部分代码

实例

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>表格自动生成</title>
  <script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.min.js"></script>
  <link href="https://cdn.bootcss.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet">

</head>
<body>
  <header class="container">
      <div class="row">
        <h1 class="form-head col-md-6" id="form_title">请输入你的标题</h1>
      </div>
      
    </header>
  <div class="container">
    <div class="row">
      <form action="./form_back.php" method="post" class="col-md-6" id="form">
    
        <div class="form-group ">
          <label for="title">表格标题:</label>
          <input type="text" placeholder="请输入标题" class="form-control" name="title" id="title" required>
        </div>

        <div class="form-group">
          <label for="cols">表格行数:</label>
          <input type="text" placeholder="请输入行数" class="form-control" name="cols" id="cols" required>
        </div>

        <div class="form-group">
          <label for="rows">表格列数:</label>
          <input type="text" placeholder="请输入列数" class="form-control" name="rows" id="rows" >
        </div>

        <div class="form-group">
          <div class="row">

              <div class="col-md-4">
                <button class="btn-lg btn-primary" type="submit" id="btn_submit">生成表格</button>
              </div>
 
              <div class="col-md-3">
                <button class="btn-lg btn-warning" type="reset" id="btn_reset">重置</button>
              </div>
              
            
          </div>
        </div>

      </form>
    </div>
    
    <div class="container">
      <div class="row">
        <div class=" col-md-6 main"></div>
      </div>
    </div>
  </div>

  <script>
    $('#form').on('submit', function (e) {
        //阻止默认表单提交
      e.preventDefault();


      
      var formData = {};
      formData['title'] = $('#title').val();
      formData['cols'] = $('#cols').val();
      formData['rows'] = $('#rows').val();
      $.ajax({
        url:'./form_back.php',
        type:'POST',
        async:true,
        data: formData,
        beforeSend:function() {
          $('#form_title').html(formData['title']);
          //防止用户多次点击按钮
          $("#btn_submit").attr({ disabled: "disabled" });
          //提交前再次确认
          $(':input').not('button').each(function (index, obj) {
            return checkVal(obj);
          });
        },
        success:function (data){
        //按钮恢复
          $("#btn_submit").removeAttr("disabled");
          console.log('success');
          $('.main').html(data);
          
        },
        error:function (data) {

        }
      });

      return false;
    })

    $('#btn_reset').on('click', function (e){ 
      $('#form_title').html('请输入你的标题');
      $('.main').html('');
    });

    function checkVal(ele) {
      if ($(ele).val().length == 0) {
        console.log($(ele));
        $(ele).before('<span style="color:red;">不能为空</span>');
        //淡出效果
        $(ele).prev().fadeOut(3000);
        return false;
      } else  {
        return true;
      }
    }
  </script>
</body>
</html>

运行实例 »

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后端PHP代码

实例

<?php

if ($_SERVER['REQUEST_METHOD'] == 'POST') {
  if (!empty($_POST['rows']) && !empty($_POST['cols']) && !empty($_POST['title'])) {
    $rows = $_POST['rows'];
    $cols = $_POST['cols'];
    $title = $_POST['title'];

    $table = '<table border="1" cellspacing="0" cellpadding="3" align="center" width="80%">'; 

   
    $table .= '<caption style="text-align:center;caption-side:top">'. $title . '</caption>';
    //标题
    $table .= '<tr align="center" bgcolor="#3e3e3e;">';
    //  表头
    for ($i = 0; $i< $cols; $i++) {
      $table .='<th> X </th>';
    }
    $table .= '</tr>';


    // 表格
    for ($r = 0; $r<$rows; $r++ ) {
      $table .='<tr>';
      for($c = 0; $c<$cols; $c++) {
        $data = $r*$cols+$c;

        $table .= '<td align="center">'. ++$data. '</td>';
      }
      $table .= '</tr>';
    }

    $table .='</table>';

    echo $table;
    exit();
  } else {
    	exit('<span style="color:red">请求类型错误</span>' . $_POST['cols']);
  }
}

运行实例 »

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实现效果

屏幕快照 2018-04-16 01.02.51.png

实现效果2


屏幕快照 2018-04-16 01.03.08.png


总结:1.习惯了表单提交使用post;

         2.采用了form标签自带的reset重置和form下input标签的required功能

         3.使用ajax带地原生form提交

         4.后端可通过$_SERVER和$_GET和$POST这些超全局变量直接获取http的内容

         

Correction status:Uncorrected

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