PHP，JS相互调用
PHP，JS互相调用1 JS方式调用PHP文件并取得php中的举一个简单的例子来说明:如在页面a.html中用下面这句调用
PHP，JS互相调用
1 JS方式调用PHP文件并取得php中的值举一个简单的例子来说明:如在页面a.html中用下面这句调用:<script type="text/javascript" src="b.php?action=test"></script><script type="text/javascript" >alert(jstext);</script>在b.php中有这样一段PHP代码:<? $action=$_GET['action']; //echo "var jstext='$action'"; //输出一句JS语句,生成一个JS变量,并赋颠值为PHP变量 $action的值 //echo "var jstext='aa'"; echo "var jstext="."'$action'"; ?>当执行a.html文件时,就会调用b.php文件,并将b.php文件的输出作为JS语句来执行,所以此处会弹出一个提示框,内容为JS变量jstext的值,也就是在PHP文件中赋给jstext的值.小结:在HTML里用JS 调用文件的方式调PHP文件,则PHP文件的输出将会被调用页作为JS的代码来用.2 php调用js中的值在z.php页面中有这样一段代码：<script type="text/javascript" > var url="aaaa*"; </script> <? $key="<script type=text/javascript>document.write(url)</script>"; echo $key; ?>3 php调用js中的方法(函数)<script type="text/javascript"> function test() { var t1=3; t1 = t1+2; alert(t1); //return t1; } </script><?php echo "<script type='text/javascript'>test();</script>"; ?>4 JS调用PHP变量（1）<?php$userId=100;?> <script>var userId;userId=document.getElementByIdx_x_x_x("userId").value;alert (userId);</script><input type="text" name="userId" id="userId" value="<?php echo $userId; ?>">（2）<?php$url = '变化的网址'; //定义变量?><script type="text/javascript">//js调用php变量var ds ="<?php echo $url?>" ; //赋值 alert(ds); //输出效果 </script>5 -------------------------------<script language="JavaScript"> <!--var Y=<?php echo date('Y')?>,M=<?php echo date('n')?>,D=<?php echo date('j')?>;--></script>6 自己写的js和php互相调用1.php内容：<?php//echo "<script LANGUAGE='javascript'>alert('$php变量');</script>"; //最简单的php调用js//echo "<a href=#><img width=50 src='$fruit_pic_array[$i]' onMouseOver=’javascript:a();‘></a>";//echo "<a href='3.php'>aaaa</a>"; //php中超链接//echo "<script type='text/javascript' language='javascript'>phpmake('PHP建站学习笔记网');</script>"; //有时候需要在PHP执行过程中，需要调用JavaScript自定义函数(验证时出错)echo "function ok(msg){alert(msg);}";?><HTML><HEAD><TITLE> php调用js文件的好办法</TITLE></HEAD><BODY><!--js调用php中定义的js--><scrīpt language=''javascrīpt'' type=''text/javascrīpt'' src=''1.php''></scrīpt><scrīpt>ok("aaaaaa!");</scrīpt></script></BODY></HTML>2.php内容：<!--js调用php--><?php$userId=100;?><script>var userId;userId=document.getElementByIdx_x("userId").value;alert (userId);</script><input type="text" name="userId" id="userId" value="<?php echo $userId; ?>"><!--js调用php--><?phpif($_GET["action"]=="ok"){echo "I'm OK!";}else{echo "I'm not OK!";}?><SCRIPT Language = "JavaScript">function func(){if(confirm("Are you OK with this?")){this.location = "ok.php?action=ok";}else{this.location = "ok.php?action=cancel";}}</SCRIPT><html><head></head><body><a href="#" href="#" onClick="javascript:func();">Please Click</a></body></html><!--js调用php--><html><head><script>function isMail(PostString){re=//w*/if(re.test(PostString)){return true;}else{return false;}}function test(){if (isMail(<?php echo $email?>)){document.write("<?php echo "N";?>");}else{document.write('<?php echo 'Y';?>');}}</script></head><body><?php$email="aa";?><input type=button value=click onclick= 'test() '></body></html><!--php中含有js代码--><?phpecho "<script language=javascript>function test(){alert( 'hello ');}</script> ";?><input type=button value=click onclick= 'test() '>
