在HTML中，使用Javascript，创建新的单选按钮及其文本？ [英] In HTML, with Javascript, create new radio button and its text?

问题描述

我希望在选中表单（表单1）的是单选按钮时，会出现一个新表单（表单2），其中包含两个单选按钮及其文本是和否。在form1的Yes按钮中有一个onclick事件，我设法使这个新表单出现，并带有两个单选按钮，但我不能让他们的文本出现。由于单选按钮没有innerHTML，我尝试将文本以纯文本的形式添加为标签，但它不起作用。
这是语法还是逻辑问题（不可能与按钮同时创建文本）？感谢您的帮助。

I want that when the "Yes" radio button of a form (form1) is checked, a new form (form2) appears, with two radio buttons and their text "Yes" and "No". With an event "onclick" in the "Yes" button of the form1, I manage to make the new form appear, with the two radio buttons, but I cannot make their text appear. Since radio buttons do not have "innerHTML", I try to add the text either as plain text, either as "label", but it is not working. Is it a problem in the syntax or in the logic (not possible to create text at the same time as the button)? Thank you for your help.

在我的HTML主体中，我有这个：

In my HTML body I have this:

<form id="form1">
<input type="radio" id= "form1_no" value="no" checked>
   <label for = "form1_no" >No</label>
<input type="radio" id= "form1_yes" value="yes" onClick= exam()>
   <label for = "form2_yes" >Yes</label>
</form> 

函数exam（）是：

The function exam() is:

<script type='application/javascript'>

function exam() {                  

    var inputno = document.createElement("input");
    inputno.type = "radio";
    inputno.id = "form2_no";
    inputno.value = "no";
    inputno.onclick = function () {alert("I select No in Form 2")}; 
    document.getElementById("form2").appendChild(inputno); // this is working

    var inputyes = document.createElement("input");
    inputyes.type = "radio";
    inputyes.id = "form2_yes";
    inputyes.value  ="yes";
    inputyes.onclick = function () {alert("I select Yes in Form 2")};
    document.getElementById("form2").appendChild(inputyes); // this is working

    // now, the code that is not working:

    // 1st tentative (adding "Yes" and "No" as plain text after their radio button):
    var textno = "No";
       document.getElementById("form2_no").appendChild(textno);
    var textyes = "Yes";
       document.getElementById("form2_yes").appendChild(textyes);

    // 2nd tentative (adding "Yes" and "No" as labels to their radio button):
    var labelno = document.createElement("label"); 
    labelno.for="form2_no"; 
    labelno.innerHTML = "No"; 
    document.getElementById("form2_no").appendChild(labelno);
    var labelyes = document.createElement("label"); 
    labelyes.for="form2_yes"; 
    labelyes.innerHTML = "Yes"; 
    document.getElementById("form2_yes").appendChild(labelyes);

}      
</script>

推荐答案

类似这样的工作可以创建按钮和标签。

Something like this works to create a button and label.

<div id="radio_home"></div>

<script>

  var radio_home = document.getElementById("radio_home");

  function makeRadioButton(name, value, text) {

    var label = document.createElement("label");
    var radio = document.createElement("input");
    radio.type = "radio";
    radio.name = name;
    radio.value = value;

    label.appendChild(radio);

    label.appendChild(document.createTextNode(text));
    return label;
  }

  var yes_button = makeRadioButton("yesbutton", "yes", "Oh yea! do it!");
  radio_home.appendChild(yes_button);
</script>

这篇关于在HTML中，使用Javascript，创建新的单选按钮及其文本？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！