this is regarding passing arguments to a function in javascript.
This code is not working. Is it because of the _(underscore) in the $l?? if yes, what change should be brought in the code. Thanks in advance. Please not the $l value will be passed to another page using ajax and queried into a database.
<script>
function show(str)
{
var r=str;
alert(r);
}
</script>
<?php
$l=Somethin_nothin_anythin;
echo "<select onChange='show($l)'>";
echo "<option></option>";
echo "</select>";
?>
it should be:
$l="something_nothing_anything":
echo "<select onChange='show(\'".$l."\')'>";
echo "<option></option>";
echo "</select>";
Related
I have a form on an HTML page which posts a user input to a PHP which executes a SQL statement to get information from a database and output it in JSON. Here is my PHP code to get the JSON data:
<?php
header('Content-type:application/json');
$con = mysqli_connect('localhost','root','','dbname');
if(isset($_POST['submit']))
{
$artist = $_POST['artist'];
$select = mysqli_query($con, "SELECT * FROM tblname WHERE artistName = ". $artist);
$rows = array();
while($row = mysqli_fetch_array($select))
{
$rows[] = $row;
}
echo json_encode($rows);
};
?>
When I submit the form on the HTML page, it goes to the PHP page and I get this result:
[{"0":"6","id":"6","1":"OASIS","artistName":"OASIS","2":"SOME MIGHT SAY","songTitle":"SOME MIGHT SAY","3":"1995-05-06","dateNo1":"1995-05-06"}]
(Code and JSON result have been simplified for this question)
Instead of going to this page, I'd like the data to be displayed nicely on the HTML page so that a user does not see this array. I'm not sure how to do this, any help?
Thank you!
If you want the output formatted nicely, why are you encoding in JSON? JSON, although human-readable, isn't intended to be rendered on-screen as an end product.
I'd recommend looping through the $rows array and building a simple HTML table. You could, of course, wrap the data in any markup you like and even add CSS to style it as you see fit. Here's an example to get you started:
echo "<table>";
foreach($rows as $row) {
foreach($row as $key => $value) {
echo "<tr>";
echo "<td>";
echo $key;
echo "</td>";
echo "<td>";
echo $value;
echo "</td>";
echo "</tr>";
}
}
echo "</table>";
If you only want some of the data rendered, you can simply echo those values:
foreach($rows as $row) {
{
echo "Artist:" . $row['artistName'];
echo "<br>";
echo "Song Title:" . $row['songTitle'];
echo "<br>";
echo "Date:" . $row['dateNo1'];
}
There are two ways to solve this problem :
Perform AJAX call from Javascript to PHP Page and parse the success response in to the HTML.
Simply echo the values in PHP Page or add HTML itself in PHP Page as suggested by Tim.
I'm using x-editable http://vitalets.github.io/x-editable/index.html a jquery inplace editor. Currently I have a working code like below:
<?php
$num_rows = 1;
// store the record of the "tblstudent" table into $row
while ($row = mysqli_fetch_array($result)) {
echo "<script type=\"text/javascript\">
$.fn.editable.defaults.mode = \"popup\";
$('#username$num_rows').editable();
</script> "; //assign num to element
// Print out the contents of the entry
echo '<tr>';
echo '<td><a href="#" id="username' . $num_rows . '" data-type="text" data-pk="' . $row['id'] . '" data-url="post.php" data-title="Edit website">';
echo htmlspecialchars($row['website'], ENT_QUOTES, 'UTF-8');
echo '</a></td>';
echo '</tr>';
$num_rows++;
}
?>
Which result in the following:
but as you can see I use $num_rows in assigning element ID and getting the ID with javascript. I prefer not to use loop to assign uniq ID to element or include the javascript in php tag. Is there any elegant solution than this?
Thanks in advance.
Keep the id as username or infact add class='username' instead of id.
<script type="text/javascript">
$.fn.editable.defaults.mode = "popup";
$('.username').click(function(){
$(this).editable();
})
</script>
This is my example code
<script>
var item = "yooow";
jQuery("#view").html(item);
</script>
<?php $str_html = '<p id="view"></p>';
echo $str_html; //it will output "yooow"
?>
but...
when i'm trying to compare this into another php variable
<?php $str_php ="yooow";
if($str_html == $str_php)
{
echo "true";
}
else
{
echo "false";
}
?>
but it returns to false
how can they be an equal?
PHP is run serverside which means it's not aware of any changes you make in the DOM using Javascript.
<script>
var item = "yooow";
Value set only in clinet side, PHP don't know about changes here
jQuery("#view").html(item);
</script>
<?php $str_html = '<p id="view"></p>';
WRONG, it will output "<p id="view"></p>"
echo $str_html; //it will output "yooow" ?>
<?php $str_php ="yooow";
Comparing "<p id="view"></p>" and "yoow" and that is not equal!
if($str_html == $str_php)
Better, you give the item value in cookie/session. And, compare the cookie value with $str_php.
<?php session_start(); ?>
<script>
$(document).ready(function(){
var item = "<?php echo $_SESSION['html']="yooow"; ?>";
$("#view").html(item);
});
</script>
<?php
$str_html = '<p id="view"></p>';
$strHtml=$_SESSION['html'];
$str_php ="yooow";
if($strHtml == $str_php)
{
echo "true";
}
else
{
echo "false";
}
?>
<script type="text/javascript">
var jvalue = 'this is javascript value';
<?php
$abc = "<script>document.write(jvalue)</script>" ?>
</script>
<?php echo 'php_'.$abc; ?>
<script type="text/javascript">
var test = "<?php echo $abc; ?>";
</script>
<?php
echo '<script language="javascript">';
echo 'alert(test)';
echo '</script>';
?>
How to alert test variable, which contains PHP value?
I would like to get the PHP value in javascript, for further execution in my project.
try this code
<?php
echo '<script language="javascript">alert("'.$test.'"); </script>';
?>
this is updated code for you using javascript and PHP
<?php
$user = "rebel";
echo '<script> var name = "'.$user.'";
alert(name);</script>';
?>
This is the third code for you if this does not work then you have other problem
<?php
$abc= "Hello";
?>
<script type="text/javascript">
var test="<?php echo $abc; ?>";
</script>
<?php
echo '<script language="javascript">';
echo 'alert(test)';
echo '</script>';
?>
why are you assigning the variable to a javascript variable and then echoing that? sounds like extra work to me...
echo 'alert("' . $abc . '");';
Your code is not so clear, i think you want something like this:
<?php
$test = "hi there!";
echo '<script type="text/javascript">';
echo 'alert("'.$test.'")';
echo '</script>';
?>
var test="<?php echo $abc; ?>"
<script language="javascript">alert(test); </script>
If you want to alert the value of $abc, you need to escape the slash in the following line with a backslash, like this.
<?php $abc = "<script>document.write(jvalue)<\/script>" ?>
You also need to remove this line (or escape the < and the > in $abc). If you don't, the script tags will mess up the rendered html code.
<?php echo 'php_'.$abc; ?>
I need to pass an array as a function argument from php to js.i am getting the values from
database.
while ($rows = pg_fetch_array($qry))
{
?>
<option value="<?php echo $rows['relation_name_local']?>">
<?php echo $rows['relation_name_local']?>
</option>
<?php
$app_relation_array[] = $rows['relation_name_local'];
}?>
i want to pass $app_relation_array[] values through addNewRow() this function
Can anyone please help me with this.
Thanks a lot.
Use json_encode() function and echo it in javascript
while ($rows = pg_fetch_array($qry))
{
?>
<option value="<?php echo $rows['relation_name_local']?>">
<?php echo $rows['relation_name_local']?>
</option>
<?php
$app_relation_array[] = $rows['relation_name_local'];
$new_data = json_encode($app_relation_array[]);
}?>
And in your html inside script tag
<script>
var data = JSON.parse("<?php echo $new_data; ?>");
alert(data);
</script>
Use json_encode function in php