Javascript 是否可以将值设置为具有相同名称/键的字段？

好的，假设我有这样一个复选框：

<input type="checkbox" value="1" class="discount_select" name="select[101132]">

试一试

更改字段的名称和ID以使其更简单
然后：
var折扣=$（“#应用折扣”）.val（）；
var start=$（“#应用_start_date”）.val（）；
var end=$（'#apply_end_date'）.val（）；
$（'.discount\u select:checked'）。每个（函数（）{
var select_id=this.attr（“id”）；
$（'[name=start.'+select_id+']'）.val（start）；
$（'[name=end_'+select_id+']'）.val（end）；
$（'[name=discount\'+select\'id+']'）.val（折扣）；
});

<input type="text" name="start[101132]">
<input type="text" name="end[101132]">
<input type="text" name="discount[101132]">

// Get values
var discount = $('#apply_discount').val();
var start = $('#apply_start_date').val();
var end = $('#apply_end_date').val();

$('.discount_select:checked').each(function() {

  // How can I target the correct fields/ID's here?

});

// Get values
var discount = $('#apply_discount').val();
var start = $('#apply_start_date').val();
var end = $('#apply_end_date').val();

$('.discount_select:checked').each(function() {
    var num = this.name.substring(7, this.name.length - 1);
    $('input[name="start[' + num + ']"]').val(start)
    $('input[name="end[' + num + ']"]').val(end)
    $('input[name="discount[' + num + ']"]').val(discount)
});

Change the name and ids of your fields to make it simpler

<input type="checkbox" value="1" class="discount_select" id="101132" name="select_101132">

<input type="text" name="start_101132">
<input type="text" name="end_101132">
<input type="text" name="discount_101132">

Then:

    var discount = $('#apply_discount').val();
    var start = $('#apply_start_date').val();
    var end = $('#apply_end_date').val();

$('.discount_select:checked').each(function() {
    var select_id = this.attr("id");
    $('[name=start_'+select_id+']').val(start);
    $('[name=end_'+select_id+']').val(end);
    $('[name=discount_'+select_id+']').val(discount);
});