下载组件： layui多选下拉框下载地址
文档地址：layui多选下拉框文档地址
目录结构：
html：
<head>
<meta charset="utf-8" />
<title>layui-select</title>
<link rel="stylesheet" type="text/css" href="./layui/css/layui.css" />
</head>
<body>
<div class="layui-container">
<form class="layui-form" method="post">
<div class="layui-form-item">
<label class="layui-form-label">多选</label>
<div class="layui-input-block" id="tag_ids">
</div>
</div>
<div class="layui-form-item" style="text-align:center;">
<div class="layui-input-block">
<button type="button" class="layui-btn" lay-submit="" lay-filter="demo">console.log</button>
</div>
</div>
</form>
<div id="btn-wrap">
<button type="button" class="layui-btn set1">设置多级1</button>
<button type="button" class="layui-btn set2">设置多选1</button>
</div>
</div>
</body>
<script charset="UTF-8" src="./layui/layui.js"></script>
js：
var tagData = [
{"id": 12,"name": "芒果四季春","status": 0}
,{"id": 13,"name": "抹茶奶盖","status": 0}
,{"id": 14,"name": "烧仙草","status": 0}
,{"id": 15,"name": "原味奶茶","status": 0}
,{"id": 16,"name": "红泪沙","status": 0}
,{"id": 17,"name": "西瓜奶茶","status": 0}
,{"id": 18,"name": "毒药","status": 0}
];
layui.config({
base: './'
}).extend({
selectN: './layui_extends/selectN',
selectM: './layui_extends/selectM',
}).use(['layer', 'form', 'jquery', 'selectN', 'selectM'], function() {
$ = layui.jquery;
var form = layui.form,
selectN = layui.selectN,
selectM = layui.selectM;
//多选标签-所有配置
var tagIns = createSelectM("#tag_ids",tagData,"tag2",[12,17]);
form.on('submit(demo)', function(data) {
console.log('tagIns 当前选中的值名：', tagIns.selected);
console.log('tagIns 当前选中的值：', tagIns.values);
console.log('tagIns 当前选中的名：', tagIns.names);
console.log('');
var formData = data.field;
console.log('表单对象：', formData);
})
//通过js动态选择
$('.set1').click(function() {
tagIns.set([6, 18]);
});
//通过js动态选择
$('.set2').click(function() {
tagIns.set([12, 13, 14, 15]);
});
/**
* 创建多选下拉框
* @param domId
* @param data
* @param inputName
* @param selected
* @param isRequired
* @returns {*}
*/
function createSelectM(domId, data, inputName, selected=[],isRequired=true) {
var options = {
//元素容器【必填】
elem: domId
//候选数据【必填】
, data: data
//默认选中的值
, selected: selected
//最多选中个数，默认5
, max: data.length
//input的name 不设置与选择器相同(去#.)
, name: inputName
//值的分隔符
, delimiter: ','
//候选项数据的键名
, field: {idName: 'id', titleName: 'name'}
};
if(isRequired==true){
// options = Object.assign({verify: 'required'}, options);
options.verify='required';
}
return selectM(options);
}
});
打印值：
