Uncaught TypeError: Cannot read property 'length' of undefined

刺骨的言语ヽ痛彻心扉 2022-07-12 07:45 195阅读 0赞

1、错误描述

![Center][]

jquery.easyui.min.js:8311 Uncaught TypeError: Cannot read property 'length' of undefined
        at _5ce (jquery.easyui.min.js:8311)
        at show (jquery.easyui.min.js:8375)
        at HTMLDivElement.<anonymous> (jquery.easyui.min.js:8463)
        at Function.each (jquery.min.js:2)
        at m.fn.init.each (jquery.min.js:2)
        at m.fn.init.$.fn.calendar (jquery.easyui.min.js:8450)
        at HTMLDivElement.<anonymous> (jquery.easyui.min.js:8483)
        at Function.each (jquery.min.js:2)
        at m.fn.init.each (jquery.min.js:2)
        at Object.moveTo (jquery.easyui.min.js:8474)
    _5ce @ jquery.easyui.min.js:8311
    show @ jquery.easyui.min.js:8375
    (anonymous) @ jquery.easyui.min.js:8463
    each @ jquery.min.js:2
    each @ jquery.min.js:2
    $.fn.calendar @ jquery.easyui.min.js:8450
    (anonymous) @ jquery.easyui.min.js:8483
    each @ jquery.min.js:2
    each @ jquery.min.js:2
    moveTo @ jquery.easyui.min.js:8474
    $.fn.calendar @ jquery.easyui.min.js:8447
    _b32 @ jquery.easyui.min.js:14962
    onShowPanel @ jquery.easyui.min.js:14870
    onOpen @ jquery.easyui.min.js:13194
    cb @ jquery.easyui.min.js:3144
    _239 @ jquery.easyui.min.js:3134
    (anonymous) @ jquery.easyui.min.js:3372
    each @ jquery.min.js:2
    each @ jquery.min.js:2
    open @ jquery.easyui.min.js:3371
    $.fn.panel @ jquery.easyui.min.js:3329
    _a05 @ jquery.easyui.min.js:13324
    (anonymous) @ jquery.easyui.min.js:13481
    each @ jquery.min.js:2
    each @ jquery.min.js:2
    showPanel @ jquery.easyui.min.js:13480
    $.fn.combo @ jquery.easyui.min.js:13441
    _9f8 @ jquery.easyui.min.js:13241
    handler @ jquery.easyui.min.js:13209
    (anonymous) @ jquery.easyui.min.js:6920
    dispatch @ jquery.min.js:4
    r.handle @ jquery.min.js:4

2、错误原因

<!DOCTYPE html>
    <html>
    	<head>
    		<meta charset="UTF-8">
    		<title>switch-case语句控制函数返回值</title>
    		<link rel="stylesheet" href="../css/themes/black/easyui.css" />
    		<link rel="stylesheet" href="../css/themes/icon.css" />
    		<link rel="stylesheet" href="../css/demo.css" />
    		<script type="text/javascript" src="../js/jquery.min.js" ></script>
    		<script type="text/javascript" src="../js/jquery.easyui.min.js" ></script>
    		<script>
    			$(function(){
    				$("#monthDate").datebox({
    					formatter: function(date){ 
    						return date.getFullYear()+'-'+(date.getMonth()+1)+'-'+date.getDate(); 
    					},
            			parser: function(date){ 
            				return new Date(Date.parse(date.replace(/-/g,"/"))); 
            			}
    				});
    			});
    			
    			function dateFormatter(date){
    		        return (date.getMonth()+1);
    		    }
    		</script>
    	</head>
    	<body>
    		<div>
    			<input id="monthDate" class="easyui-datebox" labelPosition="top"><br><br>
    			<input type="text" id="month" /><br><br>
    			<button>动态获取月份</button>
    		</div>
    	</body>
    </html>

3、解决办法

[Center]: /images/20220711/b98b3231ff6045b5843bd208149c71f5.png