Backend DevelopmentPHP TutorialSummary of methods for calling php from js and calling js from php
This article mainly introduces a summary of the methods of JS calling PHP and PHP calling JS. It has certain reference value. Now I share it with you. Friends in need can refer to it.
1 JS method of calling PHP file and get the value in php
Give a simple example to illustrate:
For example, in page a.html, use the following sentence to call:
<script type="text/javascript" src="b.php?action=test"></script> <script type="text/javascript" > alert(jstext); </script>
In b. There is such a piece of PHP code in php:
<? $action=$_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'"; ?>
When the a.html file is executed, the b.php file will be called, and the output of the b.php file will be executed as a JS statement, so a pop-up will appear here A prompt box whose content is the value of the JS variable jstext, which is the value assigned to jstext in the PHP file.
Summary:
Use JS to call the file in HTML to call the PHP file , then the output of the PHP file will be used as JS code by the calling page.
2 PHP calls the value in js
There is such a piece of code in the z.php page:
<script type="text/javascript" > var url="aaaa*"; </script> <? $key="<script type=text/javascript>document.write(url)</script>"; echo $key; ?>
3 php calls methods (functions) in js
<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 calls PHP variables
(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 $url?>" ; //赋值 alert(ds); //输出效果 </script> 5 ------------------------------- <script language="JavaScript"> <!-- var Y=<?php echo date('Y')?>,M=<?php echo date('n')?>,D=<?php echo date('j')?>; --> </script>
6 The js and php written by myself call each other
1.php content:
<?php
//echo "<script LANGUAGE='javascript'>alert('$php变量');</script>"; //最简单的php调用js
//echo "<a href=#><img style="max-width:90%"Summary of methods for calling php from js and calling js from php" ></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 content:
<!--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><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() '>The above is the entire content of this article. I hope it will be helpful to everyone's study. For more related content, please pay attention to the PHP Chinese website!
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