要求:
<select1>
包含一些选项(占位符文本=“选择新的或二手车”)
<select2>
禁用没有选项(占位符文本=“选择制造商”)
<select1>
用户选择一个
<select2>
填充了 1 的结果的选项
利用 Jquery Select2 插件
我已经让链式选择正常工作,正确填充 select2,也使用 select2 插件
问题: 我希望占位符文本在得到结果时说“找到 5 个结果”我希望占位符文本在没有结果时说“找到 0 个结果”并返回禁用目前,占位符文本更改为第一次选择,重新选择时会弄乱 select2 占位符
HTML:
//<select1>
<select name='category_id' id='category_id'>
<option value='1'>New</option>
<option value='2'>Used</option>
</select>
//<select2>
<select name='make_id' id='make_id'><option value=''></option></select>
//javascript
<script type='text/javascript'>
$(document).ready(function() {
$('#category_id').select2({
placeholder: 'Select new or used Vehicles',
allowClear: true
});
$('#make_id').select2({
placeholder: 'Select Manufacturer',
allowClear: true
});
$('#category_id').change(function() {
var selectedCategory = $('#category_id option:selected').val();
$.ajax({
type: 'POST',
url: 'ajax.php',
dataType: 'html',
data: {
a: 'dropDownsHome',
c: selectedCategory
},
success: function(txt){
//no action on success, its done in the next part
}
}).done(function(data){
//get JSON
data = $.parseJSON(data);
//generate <options from JSON
var list_html = '';
$.each(data, function(i, item) {
list_html += '<option value='+data[i].id+'>'+data[i].make+'</option>';
});
//replace <select2 with new options
$('#make_id').html(list_html);
//set to enabled|disabled
if (data.length > 1) {
$('#make_id').select2('enable', true); //enable form
}else{
$('#make_id').select2('enable', false); //disable form
}
//change placeholder text
$('#make_id').select2({placeholder: data.length +' results'});
})
});
});
</script>
//来自ajax.php的JSON结果(如果没有结果,则返回false) [{"id":"1","make":"Foton"},{"id":"4","make":"现代"},{"id":"5","make":"KIA"},{"id":"2","make":"Proton"},{"id":"2"," make":"Proton"},{"id":"3","make":"Tata"},{"id":"3","make":"Tata"},{"id":" 6","make":"丰田"}]