php使用$_POST或$_SESSION[]向js函数传参,_post_session
在php编程中向js函数传参可以使用$_POST也可使用$_SESSION[' '],也可用echo语句进行输出
复制代码 代码如下:
echo "<script>test('$_POST[userid]');</script> ";
?>
在上面的$_POST['']也可适用$_SESSION[' '];
复制代码 代码如下:
$para = "hello boby!";
echo $para; // www.jb51.net
echo "<script> var para=\"$para\"; alert(para);</script>";
?>
我认为有两种方法:
第一种:如果通过php通过get方式来获得参数值的话:
直接用js 转向php文件的地址就可以了:
window.location.href = 'mis/vocat/service.php?param=xx'
第二种:通过ajax方式来传值
我用的是js的库:jquery
假如你只传一个参数param那直接写成:param:param的值
如果是多个参数则写成:参数1:参数1的值,参数2:参数2的值
$(function(){
$.post('mis/vocat/service.php',{param:value},function(){
//php返回相应数据后js需要做的处理
});
})
按你这样就是在把js的变量拿去php里面使用, 这是不可行的, 无法实现的.
首先你要明白, php脚本是第一时间编译的, 编译完了php才会去执行html,javascript.
我看你的需求可以不需要javascript来做,你的这个sid完全可以用get/post的方式来传值, 如果想无刷新, 则要使用ajax异步来实现.
啰嗦一下:
在js里面可以使用php的变量, 反之不行

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