- TypeErrorUnable to set property 'value' of undefined or null reference.
但是可以进入添加页面,填完信息后,submit后跳转至 错误页面,(Unknown system error)
参考解决方案:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypeError
最终是因为:替换之后name要换成id.
1 <%--var hidden = document.createElement("<input type='hidden' name='<%=myid>'>");--%> 2 var hidden=document.createElement("input"); 3 hidden.setAttribute("type","hidden"); 4 hidden.setAttribute("id","myid"); 5 obj.appendChild(hidden);
-
Unable to get property 'substring' of undefined or null reference
解决: document.getElementsByName("startDate").value != '' && document.getElementsByName("endDate").value != '';
后面要加下标,如getElementsByName("")[0].value;
-
Unable to get property 'style' of undefined or null reference
解决:document.getElementById.iframe1.style.display='none';
- Unable to set property 'disabled' of undefined or null reference
解决:document.form1.birthDayStr.disabled= true;
PS. <form name="form1"
- 系统中在升级前就存在的document.getElementById(),某些在IE11中并不支持
1 IF : 2 form1.actionType.value = "searchResult"; 3 THEN: 4 var form1 = document.getElementsByName("form1")[0]; 5 Other points Similar
- onclick()内的函数报_submitQuery is undefined
1 function _submitQuery(){ 2 if(!_checkQuery()){ 3 alert("-----"); 4 } 5 return 6 }
原因:_checkQuery()内的一个getElementsByName的一个下标为[],未加0;
- 报Function expected
原因:IE11不支持【document.frames("pendingActivities")】用法。
function doRediary(){ var radios=doucment.frames("pendingActivities").document.getElemntsByName("selectedActivities"); }
替换为:
function doRediary(){ var radios=doucment.frames["pendingActivities"].document.getElemntsByName("selectedActivities"); }
技术来源:blog.sina.com.cn/s/blog_74924f2401017t0a.html
- dispatchEvent-onchange,onmousedown,onblur,onclick适应IE11写法。
1 var event1 = document.createEvent('HTMLEvents'); 2 event1.initEvent("change", true, true); 3 obj.dispatchEvent(event1); 4 5 var event1 = document.createEvent("MouseEvents"); 6 event1.initMouseEvent("mousedown", true, true, window,0, 0, 0, 0, 0, false, false, false, false, 0, null); 7 document.body.dispatchEvent(event1); 8 9 var evt2 = document.createEvent("MouseEvent"); 10 evt2.initMouseEvent("blur", true, true, window,0, 0, 0, 0, 0, false, false, false, false, 0, null); 11 document.body.dispatchEvent(evt2); 12 13 var evt2 = document.createEvent("MouseEvent"); 14 evt2.initMouseEvent("click", true, true, window,0, 0, 0, 0, 0, false, false, false, false, 0, null); 15 document.body.dispatchEvent(evt2);
- style属性
不支持这种写法:
1 style='display: "none"'
支持下面写法:
1 style="display: none"
持续更新;