我已经测试并搜索了我的案例,但仍无法正常工作。任何帮助它如此欣赏。
我有三个选择选项,实现了像这样的PHP:
<div class="control-group" id="merkPrinter">
<label class="control-label" for="selectError">Merk Printer :</label>
<div class="controls">
<select id="selectError" data-rel="chosen">
<select id="selectError" class="chzn-done" data-rel="chosen" style="display: none;">
<option value="BRO">BROTHER</option>
<option value="EDM">EPSON DOT MATRIK</option>
<option value="EPD">EPSON DESKJET</option>
<option value="HPD">HP DESKJET</option>
<option value="HPL">HP LASERJET</option>
<option value="HPO">HP OFFICEJET</option>
<option value="KM">KOINICA MINOLTA</option>
<option value="PNS">PANASONIC</option>
</select>
</div>
</div>
<div class="control-group" id="tipePrinter">
<label class="control-label">Tipe Printer :</label>
<div class="controls">
<select id="selectPrinter">
</select>
</div>
</div>
<div class="control-group" id="tipeToner">
<label class="control-label">Tipe Toner :</label>
<div class="controls">
<select id="selectToner" disabled="disabled">
</select>
</div>
要从我的数据库传递数据,我正在使用这样的ajax jquery:
$(document).ready(function($) {
$('#tipePrinter').hide();
$('#tipeToner').hide();
$("#merkPrinter").change(function() {
var id = $('#selectError option:selected').val(); // return value
if (id == "HPL") {
$.ajax({
url: '<?php echo base_url() . 'control_printer/getTypePrinter/' ?>',
type: 'POST',
data: {id: id
},
dataType: 'json',
success: function(obj) {
$('#tipePrinter').show();
$.each(obj, function(i, val) {
var content1 = "<option value=" + val.type + ">" + val.type + "</option>";
var content2 = "<option value=" + val.toner + ">" + val.toner + "</option>";
//List all of printer
$("#selectPrinter").append(content1);
//Dummy,
$("#selectToner").append(content2);
$('#tipeToner').show();
});
}
});
}
;
});
});
从这个ajax,我得到了这样的JSON:
[
{
"id_printer": "HPL",
"type": "3030, 1020, 3055",
"toner": "12A"
},
{
"id_printer": "HPL",
"type": "1200",
"toner": "15A"
},
{
"id_printer": "HPL",
"type": "P1106",
"toner": "35A"
},
{
"id_printer": "HPL",
"type": "PIXMAX",
"toner": "328"
},
{
"id_printer": "HPL",
"type": "1160, 1320",
"toner": "49A"
},
{
"id_printer": "HPL",
"type": "2015D",
"toner": "53A"
},
{
"id_printer": "HPL",
"type": "P1102, PRO1102W",
"toner": "CE285A"
}
]
假设用户选择HP Laserjet, 第二个选择选项将显示打印机的类型,例如:“P1102,PRO1102W”。 在第三选择选项中,仅查看基于墨粉的第二选择选项“CE285A”。等等,等等。
P.S:禁用第三个选择选项
由于
答案 0 :(得分:1)
我会做以下事情:
//lets pretend that the ajax call returned this and put it into a variable.
var types = [{
"id_printer": "HPL",
"type": "3030, 1020, 3055",
"toner": "12A"
}, {
"id_printer": "HPL",
"type": "1200",
"toner": "15A"
}, {
"id_printer": "HPL",
"type": "P1106",
"toner": "35A"
}, {
"id_printer": "HPL",
"type": "PIXMAX",
"toner": "328"
}, {
"id_printer": "HPL",
"type": "1160, 1320",
"toner": "49A"
}, {
"id_printer": "HPL",
"type": "2015D",
"toner": "53A"
}, {
"id_printer": "HPL",
"type": "P1102, PRO1102W",
"toner": "CE285A"
}]
$(document).ready(function($) {
//user selected the HPL
//this should be in the success function of the Ajax call
$("#selectPrinter").html("");
for (var i = 0; i < types.length; i++)
{
var printerTypes = types[i].type.split(",");
for (var c = 0; c < printerTypes.length; c++)
{
$("#selectPrinter").append($("<option></option>").val(i).text(printerTypes[c].trim() ));
}
}
//the click handler to the printer type changer should be outside the ajax call
$("#selectPrinter").change(function(){
var value = $(this).val();
$("#selectToner").attr("disabled", false);
$("#selectToner").html("");
var tonerTypes = types[value].toner.split(",");
for (var c = 0; c < tonerTypes.length; c++)
{
$("#selectToner").append($("<option></option>").val(i).text(tonerTypes[c].trim() ));
}
})
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="control-group" id="merkPrinter">
<label class="control-label" for="selectError">Merk Printer :</label>
<div class="controls">
<select id="selectError" class="chzn-done" data-rel="chosen" style="display: block;">
<option value="BRO">BROTHER</option>
<option value="EDM">EPSON DOT MATRIK</option>
<option value="EPD">EPSON DESKJET</option>
<option value="HPD">HP DESKJET</option>
<option value="HPL" selected>HP LASERJET</option>
<option value="HPO">HP OFFICEJET</option>
<option value="KM">KOINICA MINOLTA</option>
<option value="PNS">PANASONIC</option>
</select>
</div>
</div>
<div class="control-group" id="tipePrinter">
<label class="control-label">Tipe Printer :</label>
<div class="controls">
<select id="selectPrinter">
</select>
</div>
</div>
<div class="control-group" id="tipeToner">
<label class="control-label">Tipe Toner :</label>
<div class="controls">
<select id="selectToner" disabled="disabled">
</select>
</div>
代码在做什么:
types
时,它将用逗号分隔。select
,同时使用trim
去除前导空格和尾随空格。选项的值是对array
类型中的索引的引用。 select
中选择打印机类型时,会调用更改事件来呈现第三个select
。这些值是指数组中的索引,因此我们可以提取相应的碳粉。当有多个墨粉时,应用与打印机类型相同的技巧。注意我删除了这一行:
<select id="selectError" data-rel="chosen">
它是多余的,导致HTML中断。我还将其下方的select元素设置为display: block
。最后,我将
HPL
选项设置为selected
,以便在我创建的演示中显示。因此,如果您复制此代码,则需要将其删除。注意2 Laserjets需要墨粉,墨盒墨盒,所以我不知道选择喷墨打印机时会返回什么JSON,但要确保始终以一般格式返回数据。因此,您可以使用更通用的名称
toner
来代替cartridge
。