js如何在表格风显示结果

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参考技术A 在js中,可以使用for循环,通过writey方法将数组元素逐个输出在表格中。
新建一个html文件,命名为test.html,用于讲解如何将js数组在table表格中显示出来。在js标签中,创建一个数组,用于测试。在js标签中,使用write方法输出表格标签和行标签,创建一行表格。在js标签中,在表格标签内,使用for循环遍历数组元素。在for循环内,再通过write方法将单元格标签和数组元素值一起输出。在浏览器打开test.html文件,查看结果。
参考技术B <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "">
<html xmlns="">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
</head>
<body>
<form><input type="text" value="" id="orz" /></form>
<script>
var txt="";
document.getElementById("orz").value=txt;
</script>
</body>
</html>
参考技术C 在js中,可以使用for循环,通过writey方法将数组元素逐个输出在表格中。
新建一个html文件,命名为test.html,用于讲解如何将js数组在table表格中显示出来。在js标签中,创建一个数组,用于测试。在js标签中,使用write方法输出表格标签和行标签,创建一行表格。在js标签中,在表格标签内,使用for循环遍历数组元素。在for循环内,再通过write方法将单元格标签和数组元素值一起输出。在浏览器打开test.html文件,查看结果。

如何在 HTML 表格中显示带有分隔列的 SQL 查询结果

【中文标题】如何在 HTML 表格中显示带有分隔列的 SQL 查询结果【英文标题】:How to display SQL query results with columns seperated in HTML table 【发布时间】:2021-04-23 18:40:31 【问题描述】:

现在我将 SQL 查询作为“结果”并将所有数据输出为一大块。我通过在 line.innerHTML 行中添加 Category、OEM # 和 Price 将其分开,但我无法弄清楚在 HTML 表中设置它需要做什么,每列分开。这是我现在使用的代码:

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <script src="js/jquery-2.2.2.min.js"></script>
<script src="js/bootstrap.min.js"></script>
    <link   href="css/bootstrap.min.css" rel="stylesheet">
    <title>AJAX Search Example</title>
    <script>
    function fetch() 
      // (A) GET SEARCH TERM
 
      var data = new FormData();
      data.append('search', document.getElementById("search").value);
      data.append('ajax', 1);

      // (B) AJAX SEARCH REQUEST
      var xhr = new XMLHttpRequest();
    
      // (CHANGE1) USING ONREADYSTATECHNAGE INSTEAD OF ONLOAD
      
    xhr.onreadystatechange =  function (event) 
        // (CHANGE2) we will check if ajax process has completed or not it goes from 1,2,3,4 means end. 

if(this.readyState == 4)

// (CHANGE2) when ready state comes to 4 we then check what response status was it if it is 200 good else error. 

if(this.status == 200)
    // (CHANGE3) MOVED ALL YOUR CODE HERE 

// (CHANGE4) we need to use responseText instead of response because JSON comes as string that is why we are parsing it to be converted into array

var results = JSON.parse(this.responseText);
    //I have added just a measure to check what the out put is you can remove it latter. open dev console to get the result.
    console.log(results);

wrapper = document.getElementById("results");
    if (results.length > 0) 
          wrapper.innerHTML = "";

// (CHANGE5) UPDATED data ref with results 

for (i = 0; i <  results.length; i++) 
            let line = document.createElement("div");
              //it is just as simple to create id only it must start with alphabet not number 

line.id=`res$[i]`;

//we created span tag to display price and this is what we will change. on that span we will create a data-price attribute which will hold original price and we will run calculations using that number 

//BIG CHANGE
//BIG CHANGE

//since after parsing individual record will be in Js object so we dont need to access them like array  results[i]['item']

//we access them with dot notation results[i].item

line.innerHTML = `Category:$results[i].category - OEM #:$results[i].oemnumber - Price:$<span data-price='$results[i].price'>$results[i].price</span>
            select discount >>   
            <a href="#70">%70</a>
    <a href="#60">%60</a>
    <a href="#50">%50</a> <a href="#50">100%</a>`; 
            wrapper.appendChild(line);
          

 // (CHANGE6) We moved event listeners here so any newly added elements will be updated. 

 //get all the links and apply event listener through loop   
 
    var links = document.querySelectorAll('a');
      

      for ( ii = 0; ii <  links.length; ii++) 
         links[ii].addEventListener("click", function(event) 
         
       //capture link value and get number to be converted to percentage  
       
       var percentage = event.target.innerText.match(/\d+/)[0]/100;
 
 //capture the data-price which is within same div as anchor link
 
 var pricetarget = event.target.parentElement.querySelector('[data-price]');
 
 //get value of data-price
 
 var actualprice=  pricetarget.dataset.price;
 
 //run math and chnage the value on display
 
 pricetarget.innerHTML=(actualprice*percentage).toFixed(2);
      
      
      );
      

         else  wrapper.innerHTML = "No results found"; 

  else 
 
 //if reponse code is other ethan 200 

alert('INTERNET  DEAD OR AJAX FAILED ');

 

 
       

            

      ;

// (CHANGE7) We moved open event to end so everything is ready before it fires.

xhr.open('POST', "2-search.php");
      xhr.send(data);
      return false;

 
    ;
    </script>
  </head>
  <body>
    <!-- (A) SEARCH FORM -->
    <form ID='myForm' onsubmit="return fetch();">
      <h1>SEARCH FOR CATALYTIC CONVERTER</h1>
      <input type="text" id="search" required/>
      <input type="submit" value="Search"/>
    </form>

    <!-- (B) SEARCH RESULTS -->
    <div id="results"></div>


  </body>
  </html>

如您所见,我将所有数据都放入结果中,然后显示在 div id="results" 中。我想要一张桌子,在一个位置有类别,在另一个位置有 oemnumber,在另一个位置有价格。任何关于我将如何去做的建议将不胜感激。谢谢。

编辑:对不起,我忘了添加搜索脚本:

<?php
// (A) DATABASE CONFIG - CHANGE TO YOUR OWN!
define('DB_HOST', '');
define('DB_NAME', '');
define('DB_CHARSET', '');
define('DB_USER', '');
define('DB_PASSWORD', '');

// (B) CONNECT TO DATABASE
try 
  $pdo = new PDO(
    "mysql:host=".DB_HOST.";charset=".DB_CHARSET.";dbname=".DB_NAME,
    DB_USER, DB_PASSWORD, [
      PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
      PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC
    ]
  );
 catch (Exception $ex)  exit($ex->getMessage()); 

// (C) SEARCH
$stmt = $pdo->prepare("SELECT * FROM `converter_prices` WHERE `category` LIKE ? OR `oemnumber` LIKE ? OR `price`  LIKE ?");
$stmt->execute(["%".$_POST['search']."%", "%".$_POST['search']."%", "%".$_POST['search']."%"]);
$results = $stmt->fetchAll();
if (isset($_POST['ajax']))  echo json_encode($results); 

【问题讨论】:

【参考方案1】:

您可以将您的查询泵入此过程,它会分块出一个呈现的 HTML 表。

CREATE PROC dbo.[usp_QueryToHtmlTable]
(
    @Query    NVARCHAR(MAX)                 --A query to turn into HTML format. It should not include an ORDER BY clause.
    ,@OrderBy NVARCHAR(MAX) = NULL          --An optional ORDER BY clause. It should contain the words 'ORDER BY'.
    ,@HTML    NVARCHAR(MAX) = NULL OUTPUT   --The HTML output of the procedure.
)
AS
BEGIN
    SET NOCOUNT ON;

    IF @OrderBy IS NULL BEGIN
SET @OrderBy = '';
    END;

    SET @OrderBy = REPLACE(@OrderBy, '''', '''''');

    DECLARE @realQuery NVARCHAR(MAX) = N'
    DECLARE @headerRow nvarchar(MAX);
    DECLARE @cols nvarchar(MAX);    

    SELECT * INTO #dynSql FROM (' + @Query
                                       + N') sub;

    SELECT @cols = COALESCE(@cols + '', '''''''', '', '''') + ''['' + name + ''] AS ''''td''''''
    FROM tempdb.sys.columns 
    WHERE object_id = object_id(''tempdb..#dynSql'')
    ORDER BY column_id;

    SET @cols = ''SET @HTML = CAST(( SELECT '' + @cols + '' FROM #dynSql ' + @OrderBy
                                       + N' FOR XML PATH(''''tr''''), ELEMENTS XSINIL) AS nvarchar(max))''    

    EXEC sys.sp_executesql @cols, N''@HTML nvarchar(MAX) OUTPUT'', @HTML=@HTML OUTPUT

    SELECT @headerRow = COALESCE(@headerRow + '''', '''') + ''<th>'' + name + ''</th>'' 
    FROM tempdb.sys.columns 
    WHERE object_id = object_id(''tempdb..#dynSql'')
    ORDER BY column_id;

    SET @headerRow = ''<tr>'' + @headerRow + ''</tr>'';

    SET @HTML = ''<table border="1">'' + @headerRow + @HTML + ''</table>'';    
    ';

    EXEC sys.sp_executesql @realQuery
                           ,N'@HTML nvarchar(MAX) OUTPUT'
                           ,@HTML = @HTML OUTPUT;
END;

【讨论】:

【参考方案2】:

我正在尝试做一些我认为会是这样的事情,但我猜我只是没有正确编码:

line.innerHTML+= '<tr><td>' + `Category:$results[i].category + '</td><td>' + OEM #:$results[i].oemnumber + '</td><td>' + Price:$<span data-price='$results[i].price'>$results[i].price</span> + + '</td></tr>'
            select discount >>   
            <a href="#70">%70</a>
    <a href="#60">%60</a>
    <a href="#50">%50</a> <a href="#50">100%</a>`; 
            wrapper.appendChild(line);

只是添加表格标签似乎不是正确的方法lol

【讨论】:

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