jQuery动态单选按钮 [英] Jquery-Dynamic Radio Buttons
问题描述
我正在尝试在容器中创建单选按钮.从另一个容器中的Combobox中选择的值来提供单选按钮的总数，当我尝试执行此操作时，即使提供的数字大于1，我也只显示了一个单选按钮，我也得到了这些单选按钮附加到先前的选择按钮上，而不是我需要在更改选择时清除内容，而仅应显示新的按钮数量.
I am trying to create radio buttons in a container. The total number of radio buttosn is supplied from the value selected in Combobox that is in another container, when I am trying to do this, I am getting only 1 radio button displayed even the supplied number is more than 1, also I am getting those appended to the previous selection buttons, instead of that I need to clear the contents when the selection is changed and new number of buttons should only be displayed.
$(document).ready(function(){
$("#choice").change(function(){
var radio_name=$("#choice option:selected").text();
var a=$("#choice option:selected").val();
var element=$('<input type="radio" name='+ radio_name +'/><br>');
for(i=1;i <= a;i++){
element.prependTo('#reports');
}
});
});
</script>
</head>
<body>
<div style="padding-top:20px;padding-left: 300px;color: orange;">
Select Your Choice: <select id='choice' style="width:100px;">
<option>Select Your Choice</option>
<option value="4">Sales</option>
<option value="2">Income</option>
<option value="3">Consumer</option>
<option value="5">Exports</option>
</select>
</div>
<div id="reports" style='float: left;padding-top: 100px;color:orange;'>
</div>
推荐答案
element的值不能在HTML中重复.
element's value can't be duplicated in the HTML.
您需要在循环内定义element，或者，因为我看不到将无线电定义为变量的任何用处，所以您可以简单地做到这一点:
You need to define element inside the loop, or, since I don't see any use of defining the radios into a variable you can simply do:
$("#choice").change(function(){
$( '#reports' ).empty();
var radio_name=$("#choice option:selected").text();
var a=$("#choice option:selected").val();
for(i=1;i <= a;i++)
$( '<input type="radio" name='+ radio_name +'/><br>' ).prependTo('#reports');
});
empty()用于清除容器.
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