jquery获取单选按钮组的值
这是我的html代码:jquery获取单选按钮组的值,jquery,button,radio,Jquery,Button,Radio,这是我的html代码: <form name="dform"> <fieldset> <input type="radio" class="yes" name="g1" value="1"/> Yes<br/> <input type="radio" class="no" name="g1" value="0"/> No </fieldset> <fieldset> <inpu
<form name="dform">
<fieldset>
<input type="radio" class="yes" name="g1" value="1"/> Yes<br/>
<input type="radio" class="no" name="g1" value="0"/> No
</fieldset>
<fieldset>
<input type="radio" class="yes" name="g2" value="1"/> Yes<br/>
<input type="radio" class="no" name="g2" value="0"/> No
</fieldset>
<fieldset>
<input type="radio" class="yes" name="g3" value="1"/> Yes<br/>
<input type="radio" class="no" name="g3" value="0"/> No
</fieldset>
<input type="reset" class="reset" value="RESET"/><BR/>
</form>
<div id="result">N/A</div>
但它不起作用。我应该修复什么?一些语法错误和score\u yes不应该用jQuery包装
function scoring(){
var score_yes = 0;
var score_no = 0;
$(".yes:checked").each(function(){
score_yes += parseInt(this.value);
});
$(".no:checked").each(function(){
score_no += parseInt(this.value);
});
if(score_yes==3){
$("#result").html('LOW');
}else if(score_yes==2){
$("#result").html('MEDIUM');
}else if(score_no==3){
$("#result").html('HIGH');
}else if(score_no==2){
$("#result").html('HIGH');
}else{
$("#result").html('N/A');
}
}
$(document).ready(function(){
$(".yes").change(function(){
scoring();
});
});
有很多问题,从几个地方的额外括号到在jquery对象中包装int(
$(例如,score_yes)
)到绑定。是:选中了(我相信您想要。是,
,因为这两个问题都会改变的结果。你也可以做一些简化。我相信这就是你想要的:
您可以做得更简单:
function scoring() {
var score_yes = $("input.yes:checked").length;
var score_no = $("input.no:checked").length;
if (score_no >= 2)
return 'HIGH';
else if (score_yes == 3)
return 'LOW';
else if (score_yes == 2)
return 'MEDIUM';
else
return 'N/A';
}
$(document).ready(function(){
$('input[type="radio"]').change(function(){
scoring();
});
});
还有一个括号:
$(".yes:checked").each(function() ) {
应该是
$(".yes:checked").each(function(){
我个人的建议是:
/* caching the radio inputs, to save time later
(assuming there's a static collection):
*/
var radios = $('input[type="radio"]');
// setting up the event-handler:
radios.change(function(){
// filtering for how many '.yes' inputs are checked:
var yes = radios.filter('.yes:checked').length,
// filtering for how many '.no' inputs are checked:
no = radios.filter('.no:checked').length;
// setting the text of the '#result' element:
$('#result').text(function(){
/* assuming a binary decision, then only, at most,
half of the total number of elements can be checked, if they are
all choices have been made:
*/
if (yes + no === (radios.length)/2) {
/* if 'yes' scores more than 1 (so either 2 or 3) we return 'Low',
otherwise 'High':
*/
return yes > 1 ? 'Low' : 'High';
}
// some are unchecked, therefore we return 'N/A':
else {
return 'N/A';
}
});
// triggering the 'change' event on DOM-ready, in case of default-checked radio inputs:
}).change();
参考资料:
您的代码中有多个语法错误,其中有多余的{
或(
)不需要它们。此外,您的主要问题是更改侦听器的选择器,$(“.yes:checked”)
,只有已选中的选定单选按钮。您可以使用$([input[type='radio']“”
作为您的选择器。您的完整示例可以在下面找到
$(document).ready(function () {
$("input[type='radio']").change(function () {
var score_yes = 0;
var score_no = 0;
$(".yes:checked").each(function () {
score_yes += parseInt($(this).val());
});
$(".no:checked").each(function () {
score_no += parseInt($(this).val());
});
if (score_yes === 3) {
$("#result").html('LOW');
} else if (score_yes === 2) {
$("#result").html('MEDIUM');
} else if (score_no === 3) {
$("#result").html('HIGH');
} else if (score_no === 2) {
$("#result").html('HIGH');
} else {
$("#result").html('N/A');
}
});
});
什么不起作用?你收到错误消息了吗?@Bartdude没有任何错误消息,但我能看到的只是结果“N/A”,尽管我单击了任何单选按钮。@AGF,其中至少有两种情况会导致控制台错误。
$(".yes:checked").each(function(){
/* caching the radio inputs, to save time later
(assuming there's a static collection):
*/
var radios = $('input[type="radio"]');
// setting up the event-handler:
radios.change(function(){
// filtering for how many '.yes' inputs are checked:
var yes = radios.filter('.yes:checked').length,
// filtering for how many '.no' inputs are checked:
no = radios.filter('.no:checked').length;
// setting the text of the '#result' element:
$('#result').text(function(){
/* assuming a binary decision, then only, at most,
half of the total number of elements can be checked, if they are
all choices have been made:
*/
if (yes + no === (radios.length)/2) {
/* if 'yes' scores more than 1 (so either 2 or 3) we return 'Low',
otherwise 'High':
*/
return yes > 1 ? 'Low' : 'High';
}
// some are unchecked, therefore we return 'N/A':
else {
return 'N/A';
}
});
// triggering the 'change' event on DOM-ready, in case of default-checked radio inputs:
}).change();
$(document).ready(function () {
$("input[type='radio']").change(function () {
var score_yes = 0;
var score_no = 0;
$(".yes:checked").each(function () {
score_yes += parseInt($(this).val());
});
$(".no:checked").each(function () {
score_no += parseInt($(this).val());
});
if (score_yes === 3) {
$("#result").html('LOW');
} else if (score_yes === 2) {
$("#result").html('MEDIUM');
} else if (score_no === 3) {
$("#result").html('HIGH');
} else if (score_no === 2) {
$("#result").html('HIGH');
} else {
$("#result").html('N/A');
}
});
});