如何验证多组两个单选按钮,其中一个收音机为真,另一个为假。我使用Javascript但它无法正常工作。我的意思是,如果我从这些组中选择任何一个无线电,它将验证并提交。请参阅下面的代码。
<form name="form1" action="http://example.com/" onsubmit="return
validateForm()" method="post">
<div class="btn-group" data-toggle="buttons">
<label id="yes" class="btn btn-success">
<input id="true" name="options" type="radio" /> Yes
</label>
<label id="no" class="btn btn-success">
<input id="false" name="options" required="" type="radio" /> No
</label>
</div>
<div class="btn-group" data-toggle="buttons">
<label id="yes1" class="btn btn-success">
<input id="true" name="options" type="radio" /> Yes
</label>
<label id="no1" class="btn btn-success">
<input id="false" name="options" required="" type="radio" /> No
</label>
</div>
</form>
<script>
function validateForm() {
var radios = document.getElementsById("true");
if (radios.checked = true) {
return true;
} else {
alert("error");
}
}
</script>
我想验证所有真正的选项。如果其中任何一个被错误选择,它应该给出错误。你能帮我吗?
答案 0 :(得分:1)
在这里,
Vanilla JavaScript解决方案:
<form id="form_1" name="form" action="#" method="POST">
<div class="btn-group" data-toggle="buttons">
<input class="radio_btn" type="radio" name="group1" value="true">Yes
<input class="radio_btn" type="radio" name="group1" value="false">No
</div>
<div class="btn-group" data-toggle="buttons">
<input class="radio_btn" type="radio" name="group2" value="true">Yes
<input class="radio_btn" type="radio" name="group2" value="false">No
</div>
<button type="submit">Submit</button>
</form>
<script>
var form = document.querySelector('#form_1');
var radioList = form.querySelectorAll('.radio_btn');
form.addEventListener('submit', function() {
for (var i = 0, length1 = radioList.length; i < length1; i++) {
if (radioList[i].getAttribute('value') == 'false' && radioList[i].checked) {
alert("error");
return false;
}
}
});
</script>
*我重写了HTML代码。