I am using following code in php, html and javascript to print a html page and redirect to another page. It displays a prompt. I need that page to be printed without showing printing prompt/screen and automatically redirect to new php page.
<input type="button" value="Print & Do New Transaction" class="button" id="payout_print" onclick="window.print();window.location.href='transaction/admin/new_transaction'">
I have gogled it, but didn't get any useful answer that I am looking for. How to do this?
For redirect a page you need to do:
<?
header("Location: destination_page.php");
exit;
?>
Remember to don't print any html code before this code because you'll get an error
Related
i am trying above but message is displayed on php page.instead of reloading on index page AND DISPLAY MESSAGE ABOVE SUBSCRIBE FORM ITS REDIRECTING TO PHP PAGE.You can check on test site link attached.Form is on index
page.I tried to reload page through jquery onload and onclick onsubmit but didn't worked.below are test which i did.
//form is on index.html page
<!-- your form here -->
<form action="forms/subscribe.php"id="form" method="post">
<input type="email" name="email" placeholder="Enter your Email">
<input type="submit" value="Subscribe">
</form>
//form is on index.html page
My php page
<?php
// My Code goes here form to email
header.location(Location: /index.html)
?>
You cannot use js variable values after reload. You need to do things without reloading the page means you just need to update the content and control your HTML tags.
The above example you mentioned. They are not reloading the page, they are getting values from input box then hide that div. After hiding the div they are showing another div with the information.
For your solutions you can do the same but remember to reset input values for every request.
You can do it in PHP with page reloads if you store a message in the session. At the top of each page make sure that the first line is
session_start()
Then on the page that receives the data set a session message
$_SESSION['message'] = 'Some Value';
Then on your page with the form you check to see if the session has a message. If it does, display it and then clear it.
if(isset($_SESSION['message']) {
echo $_SESSION['message'];
session_unset('message');
}
some silly syntax error
using onsubmit="alert()"
<script>
function alert() {
alert("Thank you for contacting us. We will be in touch with you very soon.!");
}
</script>
on subscribe pageheader('Location: /index?message=success');
I have a todo list program and I want it to be reset to a predefined set of json within the json file once a button is clicked. For example, if the json file was full with data and someone clicked the button I want it to edit the json file to just say:
[{"completed":false,"task":"Kitchen - Sweep Floor","important":false}]
This is on cpanel latest using the latest stable php version. I've tried fwrite and file_put_contents but can't seem to get it working.
This is what I've tried already:
<html>
<h2>Click</h2>
<form action="" method="post">
<button name="click" class="click">Click me!</button>
</form>
<?php
if(isset($_POST['click']))
{
echo file_put_contents("test.json","[{"completed":false,"task":"Kitchen - Sweep Floor","important":false}]");
}
?>
</html>
When clicking the button nothing happens, no errors or anything?
You haven't assigned an action to the form, for this to work you should add the URL of the current page (so it redirects to itsself). Only then the post request is sent.
PHP won't run anything asynchronous: stuff only happens on page load.
You have syntax errors in your script - you have to escape the quotes in the string. Always look at the webserver error log or enable error display during development.
Here is the fixed code:
echo file_put_contents("test.json","[{\"completed\":false,\"task\":\"Kitchen - Sweep Floor\",\"important\":false}]");
You should use something like json_decode. Don't build json by hand:
$data = array(
"completed"=>false,
"task"=>"Kitchen - Sweep Floor",
"important"=>false
);
echo file_put_contents("test.json",json_encode($data));
I was wondering if it would be possible to have a php file grab data from a html page with an input box, so that the user enters a word, and the php runs using that word in the script once the user hits enter. Any help would be appreciated.
Use a form with the method attribute set to ‘get’ or ‘post’ like this:
<form method=“post”>
<input type=“text” name=“test” value=“test” />
<button type=“submit”>submit</button>
</form>
Then on the same php page, use this to get the result, store it in a variable and output it:
<?php
$result = $_POST[‘test’];
echo $result;
?>
More information:
https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/POST
https://developer.mozilla.org/en-US/docs/Learn/HTML/Forms/Your_first_HTML_form
Hope the formatting in this answer is ok, typed it out on my mobile phone.
I am trying to build a PHP webpage with the following behaviour:
1- A client access the webpage (that contains some buttons);
2- When the webpage is loaded, the PHP script opens a file stored on the server and, based on the information in this file, enables/disables some of the buttons, so that the client can see the webpage with the correct buttons enabled or disabled.
To enable/disable buttons, I know I can use javascript, while to read the file on the server I use PHP as stated above.
How do I put the two things together? Or should I use a PHP code equivalent to the following javascript line:
<script>document.getElementById("button1").disabled = true;</script>
At first I thought that inserting this line in the PHP code was the solution, but then I found out that this can't work for obvious reasons.
Thanks for the help!
Is it correct if I add the following javascript function in the head section of my webpage?
<script>
function enableButtons() {
<?php
if($state=="state1") {
echo 'document.getElementById("button1").disabled = true;';
}
else if($state=="state2") {
echo 'document.getElementById("button2").disabled = true;';
}
?>
}
</script>
I call the enableButtons() function when loading the page by using
<body onload="enableButtons()">
The php code above is just an example, the number of states and buttons is higher, that's why I would like to use this solution.
The common thing to do is to have php read the settings file, and echo the "disabled" attribute on the buttons before sending the output to the user browser. You can get more info about the attribute here here.
You do not need javascript.
Do something like this:
<button type="button" <?php if($state === 'state1') echo 'disabled'; ?>>Button text</button>
Usually you send to the client the buttons already disabled and use js to respond to any event that happens after sending the page, like selecting a combo box value..
You can omit the code, using an if sentence, or hide them using css. First approach is preferred.
Script
<script>
function isValid(f){
if(f.test.value==''){
alert('please enter name');
return false;
}else{
$(".bbutton").html("Processing please wait");
return true;
}
}
</script>
HTML
<form method="post" onsubmit="return isValid(this);">
<input type="hidden" name="te">
<input type="text" name="test">
<div class="bbutton">
<input type="submit" value="send">
</div>
</form>
When you submit the form then it will automatically hide the submit button to avoid pressing again and again, and you can redirect it to other page. May be this idea helpful.
I declare a variable at the beginning of my .js file:
var option="blabla";
On page 1.html I click on a link to page 2.html where I have
<script>document.write(option);</script>
No text is displayed on 2.html. When I refresh the browser while I am on 2.html I get undefined as an output.
What do I have to do to have the text displayed straight after I click the link?
Alternatively, how can I get the following code work to output strUrl on 2.html:
on 1.html I have a link:
<a href="2.html" onclick="function1("item")">
on 2.html I have a div:
<div id="display">document.write(strUrl);</div>
then I have in my .js file:
function1(searchitem)
{
strUrl = 'http://blabla.com/'
+ '?key=' + searchitem;
}
You try to create a Javascript variable on a page and then use it on another page. This is a more-or-less broad problem, since you want to maintain values across pages. First of all, you need to decide where is this value going to be defined and where is it going to be used. If this is more like a server-side variable, then you need to define it on server-side and then generate it into your Javascript code. If you are using PHP, then you can do it like this:
<script type="text/javascript>
var foo = '<?php echo $bar; ?>';
</script>
Naturally, you need to initialize $bar to be able to do that. If the variable should be a client-side variable, then you need to use localStorage, like this on 1.html:
localStorage.setItem("option", "blablabla");
and then load it on 2.html:
localStorage.getItem("option");
Or, if you need to use it both on server-side and client-side, then you can use a cookie for this purpose. Using cookies i slightly more complex, but my answer to another question should get you going.
Let's focus on the cause this did not work for you. A Javascript variable will cease to exist when the page is unloaded, so you will not be able to use its value after that. So, you need to persist it somehow, storing it either on the server or the computer where the browser is being run.
As a side-note, I should mention that you can use Javascript variables accross pages if you load some pages inside iframes of a page, but that is a different scenario.
This is what FORMS and AJAX were invented for. If your server has a PHP processor (virtually ALL of them do), then you can rename your .html files to .php and use a bit of PHP to accomplish your goal.
A web page ending with .PHP works exactly the same as one ending in .html, except that you can now add snippets of PHP code where desired. It is not necessary to have any PHP code, but if you have some it can do stuff.
Method One: FORMs
If you want to switch to page2.html and see a value sent from page1.html, you can use a FORM construct and post the data from page1 to page2:
page1.php
<form action="2.html" method="post">
<input name="option" type="text" />
<input type="submit" name="sub" value="Go" />
</form>
page2.php
<?php
$p1 = $_POST['option'];
?>
<div>On page1 of this website, you typed: <?php echo $p1; ?>. That's what you did.</div>
Note how a <form> uses the name= attribute for the name of the variable that is sent to the other side.
Example Two: The AJAX method
HTML:
<div id=nonForm">
<input id="option" type="text" />
<input type="button" id="myButt" value="Go" />
</div>
<div id="results"></div>
jQuery:
$('#myButt').click(function(){
var opt = $('#option').val();
$.ajax({
type: 'post',
url: 'page2.php',
data: 'option='+opt,
success: function(john){
if (d.length) alert(john); //display result from Page2 in a pop-up box
$('#results').html(john); //Or, display it right on the page
}
});
});
PAGE2.PHP -- The AJAX processor file
<?php
$opt = $_POST['option'];
//Now, you can do something with the data in $opt, and then send back a result
$rtn = 'Hey, you sent: ' .$opt;
echo $rtn;
The primary (and most important) difference between the two methods is that the FORM will change pages on you. The user will be sent from Page1 to Page2, and the screen will flash as this happens.
What's exciting about AJAX is it sends data to Page2, where Page2 can do something with it (for example, a database lookup), and then Page2 sends different data back to Page1. This new data can then be displayed on the page WITHOUT the page refreshing.
Here are a couple of very basic AJAX examples, to get you going:
AJAX request callback using jQuery