2020年10月22日

layui实现二级联动代码,亲测有效


layui实现二级联动代码,亲测有效,以下以省份城市的二级联动为例,直接将代码拷贝项目即可运行。

html部分


<div class="layui-form-item">
<label class="layui-form-label">城市</label>
<div class="layui-input-inline">
<select name="city" lay-filter="province">
<option value=""></option>
<option value="11">北京市</option>
<option value="12">天津市</option>
<option value="13">河北省</option>
<option value="14">山西省</option>
<option value="15">内蒙古自治区</option>
<option value="21">辽宁省</option>
<option value="22">吉林省</option>
<option value="23">黑龙江省</option>
<option value="31">上海市</option>
<option value="32">江苏省</option>
<option value="33">浙江省</option>
<option value="34">安徽省</option>
<option value="35">福建省</option>
<option value="36">江西省</option>
<option value="37">山东省</option>
<option value="41">河南省</option>
<option value="42">湖北省</option>
<option value="43">湖南省</option>
<option value="44">广东省</option>
<option value="45">广西壮族自治区</option>
<option value="46">海南省</option>
<option value="50">重庆市</option>
<option value="51">四川省</option>
<option value="52">贵州省</option>
<option value="53">云南省</option>
<option value="54">西藏自治区</option>
<option value="61">陕西省</option>
<option value="62">甘肃省</option>
<option value="63">青海省</option>
<option value="64">宁夏回族自治区</option>
<option value="65">新疆维吾尔自治区</option>
<option value="71">台湾省</option>
<option value="81">香港特别行政区</option>
<option value="82">澳门特别行政区</option>
</select>
</div>
<div class="layui-input-inline">
<select name="city" id="city">
<option value=""></option>
</select>
</div>
</div>

js操作部分


form.on('select(province)', function(data){
$.getJSON("/api/getCity?pid="+data.value, function(data){
var optionstring = "";
$.each(data.data, function(i,item){
optionstring += "<option value=\"" + item.code + "\" >" + item.name + "</option>";
});
$("#city").html('<option value=""></option>' + optionstring);
form.render('select'); //这个很重要
});
});

后台返回的数据格式json


{
"status": 200,
"message": "result",
"data": [
{
"code": "3418",
"name": "宣城市",
"province": "34"
},
{
"code": "3417",
"name": "池州市",
"province": "34"
},
{
"code": "3416",
"name": "亳州市",
"province": "34"
},
{
"code": "3415",
"name": "六安市",
"province": "34"
},
{
"code": "3413",
"name": "宿州市",
"province": "34"
},
{
"code": "3412",
"name": "阜阳市",
"province": "34"
},
{
"code": "3411",
"name": "滁州市",
"province": "34"
},
{
"code": "3408",
"name": "安庆市",
"province": "34"
},
{
"code": "3407",
"name": "铜陵市",
"province": "34"
},
{
"code": "3406",
"name": "淮北市",
"province": "34"
},
{
"code": "3405",
"name": "马鞍山市",
"province": "34"
},
{
"code": "3404",
"name": "淮南市",
"province": "34"
},
{
"code": "3403",
"name": "蚌埠市",
"province": "34"
},
{
"code": "3402",
"name": "芜湖市",
"province": "34"
},
{
"code": "3401",
"name": "合肥市",
"province": "34"
}
]
}

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