ajax返回值进入showmsg函数,然后alert(tips)出函数返回的值,但是总显示undefined,是不是返回类型的问题,新手求教~
function showmsg(ms)
{
var tips
switch(ms)
{
case 'ding':
tips='thanx votting';
break
case 'cai':
tips='thanx u done';
break
case 'erro':
tips='404 notfound';
break;
default: tips='erro';
break;
}return tips;
}
回复讨论(解决方案)
语法错误了吧,前面两个break 缺少结尾分号,先补齐了。之后在firebug控制台下看报什么错了。
在函数入口处 alert(ms) 观察一下传入的是什么
js 不强制需要行结束符“;”
在函数入口处 alert(ms) 观察一下传入的是什么
js 不强制需要行结束符“;”
其实我在firebug里面看到ajax返回多了2个空格,但是前面我用正则表达是清除了,但是就剩两个空格清不掉,不能完全清除。。返回的是" 1" 不是"1"
var str=xmlHttp.responseText;
var pass= str.replace(/\r\n/g,"");
语法错误了吧,前面两个break 缺少结尾分号,先补齐了。之后在firebug控制台下看报什么错了。
其实我在firebug里面看到ajax返回多了2个空格,但是前面我用正则表达是清除了,但是就剩两个空格清不掉,不能完全清除。。返回的是" 1" 不是"1"
var str=xmlHttp.responseText;
var pass= str.replace(/\r\n/g,"");
var pass= str.replace(/\s+/g,""); 这个才是清楚空格,你那个是清楚换行
var pass= str.replace(/\s+/g,""); 这个才是清楚空格,你那个是清楚换行
被你说对了~~没看清~~ 学得不好啊

ThesecrettokeepingaPHP-poweredwebsiterunningsmoothlyunderheavyloadinvolvesseveralkeystrategies:1)ImplementopcodecachingwithOPcachetoreducescriptexecutiontime,2)UsedatabasequerycachingwithRedistolessendatabaseload,3)LeverageCDNslikeCloudflareforservin

You should care about DependencyInjection(DI) because it makes your code clearer and easier to maintain. 1) DI makes it more modular by decoupling classes, 2) improves the convenience of testing and code flexibility, 3) Use DI containers to manage complex dependencies, but pay attention to performance impact and circular dependencies, 4) The best practice is to rely on abstract interfaces to achieve loose coupling.

Yes,optimizingaPHPapplicationispossibleandessential.1)ImplementcachingusingAPCutoreducedatabaseload.2)Optimizedatabaseswithindexing,efficientqueries,andconnectionpooling.3)Enhancecodewithbuilt-infunctions,avoidingglobalvariables,andusingopcodecaching

ThekeystrategiestosignificantlyboostPHPapplicationperformanceare:1)UseopcodecachinglikeOPcachetoreduceexecutiontime,2)Optimizedatabaseinteractionswithpreparedstatementsandproperindexing,3)ConfigurewebserverslikeNginxwithPHP-FPMforbetterperformance,4)

APHPDependencyInjectionContainerisatoolthatmanagesclassdependencies,enhancingcodemodularity,testability,andmaintainability.Itactsasacentralhubforcreatingandinjectingdependencies,thusreducingtightcouplingandeasingunittesting.

Select DependencyInjection (DI) for large applications, ServiceLocator is suitable for small projects or prototypes. 1) DI improves the testability and modularity of the code through constructor injection. 2) ServiceLocator obtains services through center registration, which is convenient but may lead to an increase in code coupling.

PHPapplicationscanbeoptimizedforspeedandefficiencyby:1)enablingopcacheinphp.ini,2)usingpreparedstatementswithPDOfordatabasequeries,3)replacingloopswitharray_filterandarray_mapfordataprocessing,4)configuringNginxasareverseproxy,5)implementingcachingwi

PHPemailvalidationinvolvesthreesteps:1)Formatvalidationusingregularexpressionstochecktheemailformat;2)DNSvalidationtoensurethedomainhasavalidMXrecord;3)SMTPvalidation,themostthoroughmethod,whichchecksifthemailboxexistsbyconnectingtotheSMTPserver.Impl


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

SublimeText3 Chinese version
Chinese version, very easy to use

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function

Atom editor mac version download
The most popular open source editor
