生成文本框

如何使用select选项在JavaScript中生成n个输入文本框。我如何获取PHP中的变量。下面生成文本框

是我的HTML表单

<HTML> 
    <HEAD> 
     <TITLE>Dynamically add Textbox in html Form using JavaScript</TITLE> 
     <SCRIPT language="javascript"> 
      var numberOfElementsAdded; 
      var arrayOfInputs = new Array(); 
      function addToDatabase(numberOfElementsAdded) { 
       numberOfElementsAdded = numberOfElementsAdded * numberOfElementsAdded; 
       var alltext = ""; 
       for (var j = 1; j <= numberOfElementsAdded; j++) { 
        var tvalue = document.getElementsByName("text" + j)[0].value; 
        arrayOfInputs.push(tvalue); 
        alltext = alltext + tvalue + " "; 
       } 
       alert(alltext); 
      } 

      function add(type, num) { 
       numberOfElementsAdded = num; 
       //Create an input type dynamically. 
       var k = 0; 
       for (var j = 0; j < num; j++) { 
        for (var i = 0; i < 4; i++) { 
         var element = document.createElement("input"); 
         k = k + 1; 
         //Assign different attributes to the element. 
         element.setAttribute("type", type + k); 
         element.setAttribute("id", type + k); 
         element.setAttribute("name", type + k); 
         element.setAttribute('width', '30'); 
         element.setAttribute('border', '3px solid #FF0000'); 

         var foo = document.getElementById("fooBar"); 
         //Append the element in page (in span). 
         foo.appendChild(element); 
        } 
        var breakLoop = document.createElement('br') 
        foo.appendChild(breakLoop) 
       } 
       var element = document.createElement("input"); 
       element.setAttribute("type", "button"); 
       element.setAttribute("id", "Submit"); 
       element.setAttribute("name", "Insert into database"); 
       element.setAttribute("value", "Insert into database"); 
       element.setAttribute("onclick", "addToDatabase(numberOfElementsAdded)"); 
       var breakLoop = document.createElement('br') 
       foo.appendChild(breakLoop) 
       foo.appendChild(element); 
      } 
     </SCRIPT> 
    </HEAD> 
    <BODY> 
     <FORM> 
     <H2>Dynamically add element in form.</H2> 
     <SELECT name="element"> 
      <OPTION value="1">1</OPTION> 
      <OPTION value="2">2</OPTION> 
      <OPTION value="3">3</OPTION> 
      <OPTION value="4">4</OPTION> 
      <OPTION value="5">5</OPTION> 
      <OPTION value="6">6</OPTION> 
      <OPTION value="7">7</OPTION> 
      <OPTION value="8">8</OPTION> 
      <OPTION value="9">9</OPTION> 
      <OPTION value="10">10</OPTION> 
     </SELECT> 
     <INPUT type="button" value="Add" onclick="add('text',document.forms[0].element.value)"/> 
     <BR/> 
     <span id="fooBar">&nbsp;</span> 
     </FORM> 
    </BODY> 
</HTML>

它生成的文本框中。但我想将文本框的值作为PHP变量提取。

来源

2013-02-14 Shweta Chinchanikar

阅读关于AJAX：http://tech.pro/tutorial/791/simple-ajax-php-and-javascript – 2013-02-14 10:23:38

假设代码正确生成的文本框，以获得在PHP中的值，你将不得不修改本：

element.setAttribute("name", "Insert into database");

到

element.setAttribute("name", "myFieldName[]"); // with the [] brackets

然后在PHP中，你会得到它本方式：

$fields = $_POST['myFieldName']; 

// make it into a single delimited field 
$fields = implode('|', $fields);

来源

2013-02-14 10:24:39

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