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e.preventDefault()是什么

e.preventDefault()是一个JavaScript函数，它可以阻止浏览器的默认行为。例如，当你点击一个超链接时，浏览器会自动跳转到超链接指向的页面，这就是浏览器的默认行为。如果你希望在点击超链接时不跳转，可以在超链接的事件处理函数中使用e.preventDefault()来阻止浏览器的默认行为。 ...

开发笔记 ·2024-12-12

FileFilter 遍历某个目录下文件名含有某个字符的文件

由于IIS版本的升级，造成了文件名中含有“+”的特殊字符的文件（多数是图片）在网页中不能被访问，于是必须查找当前目录下含有多少这样的文件，从而制定最佳的解决方案。废话少说，直接上核心代码：publicvoidGetAllFilesInDirectory(stringstrDirectory,st...

开发笔记 ·2024-08-29

PHP 自带的验证函数 FILTER_VAR()

常见的用法检查邮箱的格式是否合法if(filter_var('bob@51dev.com',FILTER_VALIDATE_EMAIL)){} 更多相关的过滤参数：ID名称描述FILTER_CALLBACK调用用户自定义函数来过滤数据。FILTER_SANITIZE_STRING去除标签，去除...

开发笔记 ·2024-05-08

未能加载文件或程序集“XXXXX”或它的某一个依赖项。未能验证强名称签名。此程序集可能已被篡改，或者已被延迟签名，但没有用正确的私钥进行完全签名。 (异常来自 HRESULT:0x80131045)

解决方案如下：方案一：删除掉此DLL引用，与BIN目录下的DLL。添加最新的DLL文件，重新添加一次。方案二：删除掉此DLL引用，与BIN目录下的引用。再清理解决方案。再添加一次。方案三：此DLL编译有错误。从新编译出此DLL，再重新引用...

开发笔记 ·2023-12-05

ORA-64143: Can only share an existing XMLIndex table with an XMLTYPE column.

文档解释ORA-64143:CanonlyshareanexistingXMLIndextablewithanXMLTYPEcolumn.Cause:AnattemptwasmadetoshareatablewithoutanXMLTYPEcolumn.Action:DropthegroupcontainingtheX...

IT技术学习 ·2023-07-28

ORA-38496: Expression Filter index is not in a valid state

文档解释ORA-38496:ExpressionFilterindexisnotinavalidstateCause:AnattemptwasmadetoREBUILDanExpressionFilterindexthatwasnotvalid.Action:UseDEFAULTkeywordintheparamete...

IT技术学习 ·2023-07-28

ORA-25100: TABLESPACE option can only be used with ALTER INDEX REBUILD

文档解释ORA-25100:TABLESPACEoptioncanonlybeusedwithALTERINDEXREBUILDCause:TheTABLESPACEoptiontoALTERINDEXwasusedwithouttheREBUILDoption.Action:UseALTERINDEXREBUILDT...

IT技术学习 ·2023-07-28

ORA-39202: Data cannot be filtered or selected in string jobs.

文档解释ORA-39202:Datacannotbefilteredorselectedinstringjobs.Cause:Adatafilterwassuppliedforthespecifiedtypeofjob,butisnotsupportedinthespecifiedjobtype.Fromthecomm...

IT技术学习 ·2023-07-28

ORA-44742: Cannot alter columns of a table that is shared by other group(s).

文档解释ORA-44742:Cannotaltercolumnsofatablethatissharedbyothergroup(s).Cause:Anattemptwasmadetoaddcolumnsto,modifycolumnsof,ordropcolumnsfromatablesharedbyothergro...

IT技术学习 ·2023-07-28

ORA-29874: warning in the execution of ODCIINDEXALTER routine

文档解释ORA-29874:warningintheexecutionofODCIINDEXALTERroutineCause:AwaringwasreturnedfromtheODCIIndexAlterroutine.Action:Checktoseeiftheroutinehasbeencodedcorrectl...

IT技术学习 ·2023-07-28

ORA-39033: Data cannot be filtered under the direct path access method.

文档解释ORA-39033:Datacannotbefilteredunderthedirectpathaccessmethod.Cause:Theuserspecifiedthatthedataaccessmethodforthejobwasdirectwhichprecludestheuseofcertaindat...

IT技术学习 ·2023-07-28

ORA-38457: The attribute “string” is not a valid XMLType attribute.

文档解释ORA-38457:Theattribute“string”isnotavalidXMLTypeattribute.Cause:Anattemptwasmadetouseanon-XMLTypeattributetoconfigureXPathfiltering.Action:Usean...

IT技术学习 ·2023-07-28

ORA-28539: gateway does not support result sets

文档解释ORA-28539:gatewaydoesnotsupportresultsetsCause:Theclientprogramtriedexecutingastoredprocedurethatreturnsoneormoreresultsetsthroughagatewaythatdoesnothaveres...

IT技术学习 ·2023-07-28

ORA-25257: consumer must be specified with a multi-consumer queue

文档解释ORA-25257:consumermustbespecifiedwithamulti-consumerqueueCause:Anattemptwasmadetoregisteronamulti-consumerqueuewithoutspecifyingaconsumerinthesubscriptionst...

IT技术学习 ·2023-07-28

ORA-19380: invalid plan filter

文档解释ORA-19380:invalidplanfilterCause:Theuserspecifiedaninvalidfilterfortheplanwhencallingtheselect_sqlsettablefunction.Action:Adjustthethefiltertobeoneofthefoll...

IT技术学习 ·2023-07-28