? 錯誤提示：ErrorNotification.js:125 Cannot assign Ctrl-Shift-Down to io.emmet.decrement_number_by_1. It is already assigned to edit.lineDown<script type="text/javascript">?? function count(){??? var a1=parseInt(document.getElementById('txt1').value);??? var a2=parseInt(document.getElementById('txt2').value);??? var guize=document.getElementById('select').value;?????? var result=0;??????? switch(guize){??????????? case '+':??????????????? result=a1+a2;??????????????? break;??????????? case '-':??????????????? result=a1-a2;??????????????? break;??????????? case '*':??????????????? result=a1*a2;??????????????? break;??????????? default:??????????????? result=a1/a2;??????????????? break;??????? }??????? document.getElementById('fruit').innerHTML=result.toString();??? }? </script> ? ?</head> ?<body>?? <input type='text' id='txt1' /> ?? <select id='select'>??<option value='+'>+</option>??<option value="-">-</option>??<option value="*">*</option>??<option value="/">/</option>?? </select>?? <input type='text' id='txt2' /> ?? <input type='button' value=' = ' onclick='count()'/> <!--通過 = 按鈕來調用創建的函數，得到結果--> ?? <input type='text' id='fruit'/>?? ?</body></html>
代碼有什么錯誤呢？錯誤信息顯示ErrorNotification.js
_Capricornna
2016-07-13 14:04:49
