For example i declare some variable like test in server side of my PHP
echo('var test = ' . json_encode($abc));
Now i want to use this test variable in Jquery ..how can i use it?
What function do i need to use it?
For Example i have:
I have back end PHP code something like this
$abc = no
echo "var test= ".json_encode($abc);
I want jquery to do the following action(client side)
$(document).ready(function(){
function(json) {
if($abc == no )//this i what i want to be achieved
}
}
I think, you dont understand the diference between frontend (JavaScript) and backend (PHP). You can not directly access php variables from javascript. You need to make Ajax-request to some php file, that will return some data that you need in format that you specify. for example:
<?php
$result = array('abc' => 'no');
echo json_encode($result);
?>
This is serverside script called data.php. In Javascript you can make so:
$(document).ready(function(){
$.getJSON('data.php', function (data) {
if(data.abc === 'no') {
your code...
}
});
}
You're comparing the wrong variable:
<?php
echo <<<JS
<script type="text/javascript">
var test = {json_encode($abc)};
$(document).ready(function(){
if(test == 'no' )
// here you go
}
});
</script>
JS;
$abc. PHP echos var test = ... so test is the variable to compare in the condition.If you really wanted to (though I don't think this is a very good practice), you could echo the PHP variable's value into a javascript variable like this:
<script type="text/javascript">
var phpValue = <?php echo $abc; ?>;
alert(phpValue);
</script>
I can see this being dangerous in many cases, but what this effectively does is echo the value of $abc onto the page (inside of your script tags of course). Then, when the javascript it run by the browser, the browser sees it like this:
<script type="text/javascript">
var phpValue = no;
alert(phpValue);
</script>
This is very basic, but you get an idea of what you could do by using that kind of code.
