php、
if(){}
else
{
echo "<script><br /> $(document).ready(function() {$('.captcha').hide(); });<br /></script>";
......php代码,在此省略
}
我想要的结果是当执行else的时候页面中的captcha class的css给隐藏掉。但如上写的代码貌似不对,该怎么在php的判断语句中加jquery代码啊?
------解决方案--------------------
如果代码没有问题的话
- PHP code
echo (function($){ $('.captcha').show(); })(jQuery);HTML;$error_msg = elgg_echo('loginerror');<br><font color="#e78608">------解决方案--------------------</font><br>
------解决方案--------------------
此易事尔
if(){
}else
?>
<script>//jquery</script>
}
?>
------解决方案--------------------
";多了这个,加分吧,,我分少呢
------解决方案--------------------
这段JS代码要放在引入jquery.js文件之后
问题关键在于,最终输出到客户端的html代码是怎样的
------解决方案--------------------
我已经告诉过你了
不过记得,这个输出必须在你的captcha已经正常输出之后进行控制,否则无效。
所以其实你应该这么做 php输出一个隐藏的值例如
echo '';
在整个页面载入之后再根据这个值来执行相应的操作。
- JScript code
$(document).ready(function() { if ($('#fool').val()=='false'){//执行代码$('.captcha').show(); }});<br><font color="#e78608">------解决方案--------------------</font><br>
------解决方案--------------------
你要明白一点 php是运行在服务器端而js和jquery是运行在客户端的,所以在你需要操作的html标签没有显示到客户端的时候,jquery是无法操作这些代码的。理解这点你就知道剩下的怎么做了。
------解决方案--------------------
算了,告诉你一招秘技,一般人我不告诉他,记得给分。。
- PHP code
<script src="jquery-1.4.2.js"></script> <div id="dv" style="display:none;width:100px;height:100px;border:1px solid red"></div> <?php $k='<script> $(function(){ $("#dv").show(3000); }) '; $do=DOMDocument::loadHTML($k); echo $do->saveHTML(); ?><br><font color="#e78608">------解决方案--------------------</font><br>
------解决方案--------------------
document.cookie的用法不是 名=值 一一对应的么? document.cookie="Id=111";
就算你的cookie 有内容吧
if (cookies == 'value') 这里怎么是这样判断呢.
getCookie('Id')//获取cookie的值
...
一塌糊涂啊....
http://www.satya-weblog.com/2007/05/php-and-javascript-cookie.html
先看看基本的东西.先仔细的学习一下cookie 在php和js里的用法.
------解决方案--------------------
另外firebug是可以断点调试的,多多用这个功能+alter 慢慢找代码不对的地方吧
------解决方案--------------------
你的描述 有问题啊

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

MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

SublimeText3 Chinese version
Chinese version, very easy to use

DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

Zend Studio 13.0.1
Powerful PHP integrated development environment

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool
