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js调用php和php调用js的方法

Posted by 破冰 on 2012-12-4 14:53 Tuesday

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-->

<?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>

<!--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-->

<?php

echo "

<script language=javascript>

function test(){

alert( 'hello ');

}

</script> ";

?>

<input type=button value=click onclick= 'test() '>

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