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        如果选中收音机,则需要输入字段

        时间:2023-10-20
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                • 本文介绍了如果选中收音机,则需要输入字段的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!

                  问题描述

                  Can I somehow insert the required attribute into an input field only if a certain radio is checked?

                  I have an input field named "ladder-meters" that is not required to be filled per default. But if the user checks a radio button that is named "ladder" the "ladder-meters" field are required to be filled.

                  My input looks like this:

                  <input type="text" name="ladder-meters" id="ladder-meters">
                  

                  and should like this at the onchange event on the radio

                  <input type="text" name="ladder-meters" id="ladder-meters" required>
                  

                  解决方案

                  Easy to achieve with jQuery:

                  $('#ladder').change(function () {
                      if($(this).is(':checked') {
                          $('#ladder-meters').attr('required');
                      } else {
                          $('#ladder-meters').removeAttr('required');
                      }
                  });
                  

                  这篇关于如果选中收音机,则需要输入字段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跟版网!

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