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:
alert(jstext);
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:
$key=""; echo $key; ?>
3 php调用js中的方法(函数)
test();"; ?>
4 JS调用PHP变量
(1)
$userId=100;
?> <script></script>
var userId;
userId=document.getElementByIdx_x_x_x("userId").value;
alert (userId);
(2)
$url = '变化的网址'; //定义变量
?>
//js调用php变量
var ds ="" ; //赋值 alert(ds); //输出效果
5 -------------------------------
var Y=,M=,D=;
-->
6 自己写的js和php互相调用
1.php内容:
//echo ""; //最简单的php调用js
//echo "aaaa"; //php中超链接
//echo ""; //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);}";
?>
ok("aaaaaa!");
īpt>
2.php内容:
$userId=100;
?>
<script></script>
var userId;
userId=document.getElementByIdx_x("userId").value;
alert (userId);
if($_GET["action"]=="ok")
{
echo "I'm OK!";
}
else
{
echo "I'm not OK!";
}
?>
function func()
{
if(confirm("Are you OK with this?"))
{
this.location = "ok.php?action=ok";
}
else
{
this.location = "ok.php?action=cancel";
}
}
<script></script>
function isMail(PostString)
{
re=//w*/
if(re.test(PostString))
{
return true;
}
else
{
return false;
}
}
function test(){
if (isMail())
{document.write("");}
else
{document.write('');}
}
$email="aa";
?>
www.2cto.com
echo "
function test(){
alert( 'hello ');
}
";
?>

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