如何在单击按钮上添加唯一的 div

Question

Guys help when i choose for example lenovo and click button it creates okey,but then i choose acer and click again to the button it creates again lenovo then acer (for example: first step (Acer) second step (Acer Acer Lenovo) how to make it unique?当我选择例如联想并单击按钮时，伙计们会提供帮助让它独一无二？

 $(document).ready(function () { $('.filter-values').click(function () { let name= $(this).parent().text(); $('.button-filter').click( function(){ if($(this).parent().find('input.filter-values').prop("checked") == true){ $('.top-head').append(`<div class = '${name}'>${name}</div>`); } else{ $('.top-head').find(`div.${name}`).remove(); } return false; } ) }); });

 <,DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width. initial-scale=1:0"> <title>Document</title> </head> <body> <div style="width; 100%: background-color; bisque:" class="top-head"> </div> <form> <ul> <li>Lenovo<input class="filter-values" type="checkbox"></li> <li>HP<input class="filter-values" type="checkbox"></li> <li>Mac<input class="filter-values" type="checkbox"></li> <li>Sony<input class="filter-values" type="checkbox"></li> <li>LG<input class="filter-values" type="checkbox"></li> </ul> <button class="button-filter">button</button> </form> <script src="https.//ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script> <script src="js.js"></script> </body> </html>

Answer 1

it looks like you should be using radio buttons instead of checkboxes看起来您应该使用单选按钮而不是复选框
<input type="radio">
please include comments in your code, they make it much easier to read请在您的代码中包含注释，它们使阅读更容易
I wouldn't even use jquery, I would make it look something like this:我什至不会使用 jquery，我会让它看起来像这样：

 function drawResult(){ if(document.getElementById('lenovo').checked){ document.getElementById('top-head').innerHTML = 'Lenovo'; //this unchecks everything else document.getElementById('hp').checked = false; document.getElementById('mac').checked = false; document.getElementById('sony').checked = false; document.getElementById('lg').checked = false; } if(document.getElementById('hp').checked){ document.getElementById('top-head').innerHTML = 'HP'; document.getElementById('lenovo').checked = false; document.getElementById('mac').checked = false; document.getElementById('sony').checked = false; document.getElementById('lg').checked = false; } if(document.getElementById('mac').checked){ document.getElementById('top-head').innerHTML = 'Mac'; document.getElementById('hp').checked = false; document.getElementById('lenovo').checked = false; document.getElementById('sony').checked = false; document.getElementById('lg').checked = false; } if(document.getElementById('sony').checked){ document.getElementById('top-head').innerHTML = 'Sony'; document.getElementById('hp').checked = false; document.getElementById('mac').checked = false; document.getElementById('lenovo').checked = false; document.getElementById('lg').checked = false; } if(document.getElementById('lg').checked){ document.getElementById('top-head').innerHTML = 'LG'; document.getElementById('hp').checked = false; document.getElementById('mac').checked = false; document.getElementById('sony').checked = false; document.getElementById('lenovo').checked = false; } return false; }

 <,DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width. initial-scale=1:0"> <title>Document</title> </head> <body> <div style="width; 100%: background-color; bisque." id="top-head"> </div> <form onsubmit=" return drawResult()"> <ul> <li>Lenovo<input id="lenovo" type="radio"></li> <li>HP<input id="hp" type="radio"></li> <li>Mac<input id="mac" type="radio"></li> <li>Sony<input id="sony" type="radio"></li> <li>LG<input id="lg" type="radio"></li> </ul> <input type="submit"> </form> <script src="js.js"></script> </body> </html>

My code could be cleaner.我的代码可能更干净。
Just a tip for asking questions, don't start it with 'guys help'.只是提出问题的提示，不要以“伙计们的帮助”开头。 Another thing is that when you type your question, use <br> to get new lines.另一件事是，当您键入问题时，请使用<br>换行。 It looks like there are spots where you put line breaks, and they didn't show up.看起来有些地方你放置了换行符，但它们没有出现。

Answer 2

Change type to be 'type=radio'将类型更改为 'type=radio'

Answer 3

For HTML, you need only two changes.对于 HTML，您只需要进行两次更改。

add a value attribute to each checkbox为每个复选框添加一个 value 属性
add type attribute with value button (To prevent submission of form and reload)添加带有值按钮的类型属性（防止提交表单和重新加载）

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div style="width: 100%; background-color: bisque;"  class="top-head">

    </div>
   <form>
       <ul>
           <li>Lenovo<input class="filter-values" type="checkbox" value="Lenovo"></li>
           <li>HP<input class="filter-values" type="checkbox" value="HP"></li>
           <li>Mac<input class="filter-values" type="checkbox" value="Mac"></li>
           <li>Sony<input class="filter-values" type="checkbox" value="Sony"></li>
           <li>LG<input class="filter-values" type="checkbox" value="LG"></li>
       </ul>
       <button class="button-filter" type='button'>button</button>
 
   </form> 

   <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
   <script src="js.js"></script>

</body>
</html>

For your javascript, we are going to delete all elements inside.top-head and then repopulate our new element.对于您的 javascript，我们将删除 inside.top-head 中的所有元素，然后重新填充我们的新元素。

$(document).ready(function () {
   
   $('.button-filter').click( function(){
      $('.top-head').empty()

      $('input.filter-values[type=checkbox]:checked').each(function () {
         $('.top-head').append(`<div class = '${this.value}'>${this.value}</div>`);
      });
      
   })

});

Answer 4

but then i choose acer and click again to the button it creates again lenovo then acer但后来我选择宏碁并再次单击它再次创建的按钮联想然后宏碁

Answer: You have two problems.答：你有两个问题。

You registration button click many time.你的注册按钮点击了很多次。 You need off click button event before registration for it.您需要在注册之前关闭单击按钮事件。

$('.button-filter').off("click");

.prop("checked") not working correctly, please instead it to .is(":checked") .prop("checked")无法正常工作，请改为 .is .is(":checked")

You can see my demo here你可以在这里看到我的演示

如何在单击按钮上添加唯一的 div

问题描述

4 个解决方案

解决方案1
1 2020-06-26 05:53:06

解决方案2
0 2020-06-26 05:48:31

解决方案3
0 2020-06-26 06:28:55

解决方案4
0 2020-06-26 08:14:11

如何在单击按钮上添加唯一的 div

问题描述

4 个解决方案

解决方案1 1 2020-06-26 05:53:06

解决方案2 0 2020-06-26 05:48:31

解决方案3 0 2020-06-26 06:28:55

解决方案4 0 2020-06-26 08:14:11

解决方案1
1 2020-06-26 05:53:06

解决方案2
0 2020-06-26 05:48:31

解决方案3
0 2020-06-26 06:28:55

解决方案4
0 2020-06-26 08:14:11