今天小编就为大家分享一篇Layui动态生成select下拉选择框不显示的解决方法，具有很好的参考价值，希望对大家有所帮助。一起跟随小编过来看看吧
给代码添加如下部分:
layui.use('form', function(){ //此段代码必不可少 var form = layui.form; form.render(); });
实现效果:
HTML代码:
<div> <label>执行周期</label> <div> <select lay-verify="required" lay-filter="period"> <option value="week">每星期</option> <option value="day">每天</option> <option value="day-n">N天</option> <option value="hour">每小时</option> <option value="hour-n">N小时</option> <option value="minute-n">N分钟</option> <option value="month">每月</option> </select> </div> <div> <!-- 默认每星期 --> <div> <div> <select> <option value="1">周一</option> <option value="2">周二</option> <option value="3">周三</option> <option value="4">周四</option> <option value="5">周五</option> <option value="6">周六</option> <option value="0">周日</option> </select> </div> <div> <input type="number" value="1" max="23" maxlength="2" min="0"/> </div> <div> <input type="text" readonly value="小时"> </div> <div> <input type="number" value="30" maxlength="2" max="59" min="0"/> </div> <div> <input type="text" readonly value="分钟"> </div> </div> </div> </div>
layui.use('form', function(){ var form = layui.form; form.on('select(period)', function(data){ var num = data.elem.selectedIndex; //获取对应option的索引排序 num = num + 1; $('#suboption').empty(); switch (num) { case 1: //每星期 $("#suboption").append(`<div> <div > <select> <option value="1">周一</option> <option value="2">周二</option> <option value="3">周三</option> <option value="4">周四</option> <option value="5">周五</option> <option value="6">周六</option> <option value="0">周日</option> </select> </div> <div> <input type="number" value="1" max="23" maxlength="2" min="0"/> </div> <div> <input type="text" readonly value="小时"> </div> <div> <input type="number" value="30" maxlength="2" max="59" min="0"/> </div> <div> <input type="text" readonly value="分钟"> </div> </div>`); layui.use('form', function(){ //此段代码必不可少 var form = layui.form; form.render(); }); break; case 2: //每天 $("#suboption").append(` <div> <div> <input type="number" value="1" max="23" maxlength="2" min="0"/> </div> <div> <input type="text" readonly value="小时"> </div> <div> <input type="number" value="30" maxlength="2" max="59" min="0"/> </div> <div> <input type="text" readonly value="分钟"> </div> </div>`); break; case 3: //N天 $("#suboption").append(` <div> <div> <input type="number" value="3" max="31" maxlength="2" min="0"/> </div> <div> <input type="text" readonly value="天"> </div> <div> <input type="number" value="1" max="23" maxlength="2" min="0"/> </div> <div> <input type="text" readonly value="小时"> </div> <div> <input type="number" value="30" maxlength="2" max="59" min="0"/> </div> <div> <input type="text" readonly value="分钟"> </div> </div>`); break; case 4: //每小时 $("#suboption").append(`<div> <div> <input type="number" value="30" maxlength="2" max="59" min="0"/> </div> <div> <input type="text" readonly value="分钟"> </div> </div>`); break; case 5: //N小时 $("#suboption").append(` <div> <div> <input type="number" value="1" max="23" maxlength="2" min="0"/> </div> <div> <input type="text" readonly value="小时"> </div> <div> <input type="number" value="30" maxlength="2" max="59" min="0"/> </div> <div> <input type="text" readonly value="分钟"> </div> </div>`); break; case 6: //N分钟 $("#suboption").append(`<div> <div> <input type="number" value="3" maxlength="2" max="59" min="0"/> </div> <div> <input type="text" readonly value="分钟"> </div> </div>`); break; case 7: //每月 $("#suboption").append(` <div> <div> <input type="number" value="3" max="31" maxlength="2" min="0"/> </div> <div> <input type="text" readonly value="日"> </div> <div> <input type="number" value="1" max="23" maxlength="2" min="0"/> </div> <div> <input type="text" readonly value="小时"> </div> <div> <input type="number" value="30" maxlength="2" max="59" min="0"/> </div> <div> <input type="text" readonly value="分钟"> </div> </div>`); break; } }); });