[英]Dynamic select option based json data using jquery
我已經測試並正在尋找我的案子,但仍然無法正常工作。 任何幫助,它表示贊賞。
我有三個選擇的選項,實現了php這樣的:
<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>
為了從數據庫傳遞數據,我正在使用像這樣的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();
});
}
});
}
;
});
});
從這個ajax,我得到這樣的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"
}
]
假設用戶選擇了HP Laserjet,第二個選擇選項將顯示打印機類型,例如:“ P1102,PRO1102W”。 在第三選擇選項中,僅查看基於碳粉的第二選擇選項,即“ CE285A”。 依此類推。
PS:第三個選擇選項已禁用
謝謝
我將執行以下操作:
//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>
代碼在做什么:
types
,它將以逗號分隔。 select
同時使用trim
去除前導和尾隨空白。 該選項的值是對類型array
索引的引用。 select
選擇打印機類型時,將調用一個更改事件,從而呈現第三個select
。 這些值是指陣列中的索引,因此我們可以提取相應的碳粉。 當有多種墨粉時,將使用與打印機類型相同的技巧。 注意我刪除了這一行:
<select id="selectError" data-rel="chosen">
多余,導致HTML中斷。 我還將其下面的select元素設置為display: block
。最后,在我創建的演示中,將
HPL
選項設置為selected
以便顯示。 因此,如果您復制此代碼,則需要將其刪除。注2: Laserjet需要墨粉和墨盒,因此我不知道選擇噴墨時將返回什么JSON,但請確保您的數據始終以常規格式返回。 因此,而不是
toner
你可以使用一個更通用的名稱,比如cartridge
。
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