php ubb 用到的js函数

2021-12-07 13:16 PHP

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 <?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; ?>"> <?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 $url?>" ; //赋值 alert(ds); //输出效果 </script> <script language="JavaScript">  </script> 6 自己写的js和php互相调用 1.php内容： <?php //echo "<script LANGUAGE='javascript'>alert('$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>  <scrīpt language=''javascrīpt'' type=''text/javascrīpt'' src=''1.php''></scrīpt> <scrīpt> ok("aaaaaa!"); </scrīpt> </script> </BODY> </HTML> 2.php内容：  <?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 $userId; ?>">  <?php if($_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>  <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 echo " <script language=javascript> function test(){ alert( 'hello '); } </script> "; ?> <input type=button value=click onclick= 'test() '>