小编我在使用layui,在select的地方遇到了坑,select里的值居然无法清空,select里的option还有叠加问题,为了解决这个问题,也达到我的功能,我研究了下,让有同样需求的小伙伴不踩坑,特贴上我的源码:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>layui-下拉框联动测试</title>
<link rel="stylesheet" href="layui/css/layui.css">
</head>
<body>
<div id="wrap">
<div class="layui-form" lay-filter="merchantForm">
<div class="layui-form-item">
<label class="layui-form-label">选择框</label>
<div class="layui-input-block">
<select name="city" lay-verify="required" id="test1" lay-filter="test1">
<option value="0">时间</option>
<option value="1">金额</option>
</select>
</div>
</div>
<div class="layui-form-item">
<label class="layui-form-label">选择框</label>
<div class="layui-input-block">
<select name="city" lay-verify="required" id="test2" lay-filter="test2">
<option value="">请选择规则名称</option>
</select>
</div>
</div>
</div> <button id="btn">确定</button>
</body>
<script src="layui/layui.all.js"></script>
<script src="layui/jquery-1.8.3.min.js"></script>
<script>
//后台传过来的数据
var data=[
{unitType:0,ruleName:'时间规则11',amount:1100,money:1100},
{unitType:0,ruleName:'时间规则12',amount:1200,money:1200},
{unitType:0,ruleName:'时间规则13',amount:1300,money:1300},
{unitType:1,ruleName:'金额规则21',amount:2100,money:2100},
{unitType:1,ruleName:'金额规则22',amount:2200,money:2200},
{unitType:1,ruleName:'金额规则23',amount:2300,money:2300},
];
//初始化默认为时间类型以及对应的时间规则
layui.use('form', function(){
var form = layui.form;
$('#test2').html('');
var html='';
$.each(data,function(i,e){
if(e.unitType==0)
html+=`<option data-type="${e.unitType}">${e.ruleName}</option>`;
})
$('#test2').append(html);
form.render('select');
})
//动态二级联动
layui.use('form', function(){
var form = layui.form;
form.on('select(test1)', function(obj){
$('#test2').html('');
var html='';
if(obj.value==0){
$.each(data,function(i,e){
if(e.unitType==obj.value)
html+=`<option data-type="${e.unitType}">${e.ruleName}</option>`;
})
$('#test2').append(html);
}else if(obj.value==1){
$.each(data,function(i,e){
if(e.unitType==obj.value)
html+=`<option data-type="${e.unitType}">${e.ruleName}</option>`;
})
$('#test2').append(html);
}
form.render('select');
});
})
//二级联动完毕后获取对应的规则数据
$('#btn').click(function(){
var thisValue=data.find((v)=>v.ruleName==$('#test2').val());
console.log(thisValue);
})
</script>
</html>
一定不要设置value值一样,不然相同的value都给你加上lay-this
有疑问的小伙伴可以留言给我，谢谢。