How to load the output buffer into a string using javascript ?
for example in php
<?php ob_start(); ?>
hello world !
<?php $string = ob_get_contents(); ?>
To be more specific, code is tested!
<?php ob_start(); ?>
hello world !
<?php $string = ob_get_contents(); ?>
<script type="text/javascript">
var MyJSStringVar = "<? echo trim($string)?>";
console.log(MyJSStringVar);
alert(MyJSStringVar);
</script>
If you are running PHP 5.2 or above, you can call json_encode() to automatically escape the string properly for JavaScript.
<?php ob_start(); ?>
hello world !
<?php $string = ob_get_contents(); ?>
<script type="text/javascript">
var theString = <?php echo json_encode($string); ?>;
</script>
For PHP 5.1 or below, you can use a compatibility library, like jsonwrapper, that adds the json_encode function for you.
Related
My code :
<?php echo ' <script>var p=0;for(var i=0;i<=5;i++){p++;}alert("ques".p);? >
The value of p is displayed as 0.
You need to close your php tag properly as well as the <script> tag like so:
<?php echo '<script>var p=0;for(var i=0;i<=5;i++){p++;}alert("ques" +p);</script>'; ?>
Also, change the . to a + as you are concatenating in javascript not PHP
The correct answer is:
<?php echo '<script>var p=0;for(var i=0;i<=5;i++){p++;}alert("ques" + p)'; ?>
Strings in single quotes will be escaped, use quotation marks instead.
<?php echo "<script>var p=0;for(var i=0;i<=5;i++){p++;}alert('ques' +p);</script>"; ?>
The mistakes in your code are,
Close your php tag properly - ?> instead of ? >
Close the script tag in the end - </script>
Close the single quote you started with echo
The correct code would be
<?php echo '<script>var p=0;for(var i=0;i<=5;i++){ p++; } alert("ques" + p); </script>'; ?>
I need to get javascript variable value in php file.
html example:
UPDATE:
$html = '
<script>
window.runParams.adminSeq="3423423423423";
window.runParams.companyId="2349093284234";
</script>';
Shout I use regex ? regex is very complex to me... any help ?
<?php
$html = '<script>
window.runParams.adminSeq="3423423423423";
window.runParams.companyId="2349093284234";
</script>';
$variables = ["adminSeq", "companyId"];
$counter = 0;
foreach($variables as $variable) {
preg_match_all('/"(.*?)"/', $html, $matches);
${"$variable"} = ($matches[1])[$counter];
$counter++;
}
echo $adminSeq; // Prints out: 3423423423423
echo $companyId; // Prints out: 2349093284234
?>
You can also use GET requests to do this. The link would look like http://localhost/?adminSeq=3423423423423&companyId=2349093284234 then get out these values in PHP with:
<?php
$adminSeq = $_GET["adminSeq"];
$companyId = $_GET["companyId"];
?>
Im trying to give a javascript variable a value from php, this way:
<script type="text/javascript">
var id = <?php echo json_encode( $_GET['id']); ?>;
window.alert('Javascript still works');
The probem is once include the line: var id = <?php echo json_encode( $_GET['id']); ?>;
My javascript breaks any ideas on the way around this?
I have searched and tried several different methods to pass a php $variable to a jQuery function. I can pass a string simply by using myfunction("Hello");. But if I try myfunction(); or myfunction($variable); with or without quotes it fails to run.
function wholesection(val) {
$("#whole-section").slideUp("fast", function () {
});
$('#label-cemetery').text("Section*");
$('#poc').val(val);
}
The above works if I send a literal string enclosed in double quotes, using:
<?php
echo '<script>',
'wholesection("Hello");',
'</script>'
;
?>
</head>
<body>
<?php
$variable = "Hello";
echo '<script>',
'wholesection(' . $variable . ');',
'</script>'
;
?>
Or other similar variants do not work.
'wholesection($variable);',
'wholesection("$variable");',
Suppose your $variable has value "Hello".
Then this code:
echo 'wholesection('.$variable.');',
is rendrered in html like
wholesection(Hello);
See? You're passing Hello to a function. Not "Hello" but Hello.
And Hello is considered a javascript variable. I bet you don't have it.
So, the fix is - add quotes:
echo 'wholesection("'.$variable.'");',
which will be rendered as:
wholesection("Hello");
You can pass it by echoing your php varriable in the script
try below code :
<?php
$variable = "Hello";
?>
<script type="text/javascript">
var simple = '<?php echo $variable; ?>';
</script>
<?php
$variable = "Hello";
if(true){
?>
<script>
wholesection("<?php echo $variable?>");
</script>
<?
}
?>
My variable contains a color name. My example:
<?php
$myvar = blueColour;
?>
I need to add this value to body of a html page using jQuery:
<script type="text/javascript">
jQuery(body).addClass("<?php echo $myvar; ?>");
</script>
Can I use php inside jQuery this way? Thank you.
EDIT: its an wordpress site. I use this in a if to add that class on a specific page template.
<script type="text/javascript">
jQuery("body").css("color", "<?php echo $myvar; ?>");
</script>
yes, as long as your html file is interpreted by php (having .php/.phtml extension)
I did it. Worked.
Correct is:
jQuery('body').addClass("<?php echo $myvar; ?>");
with
jQuery('body')
not
jQuery(body)
if ( is_page_template('nameOfYouTemplate.php') ) {
echo '<body class='. $myvar .'>';
} else {
echo '<body>';
}