I m trying to post the value from my java_post.js into php_post.php and then retrieve in another javascript page, index.html. So far i can post the value into the php_post.php and retrieve back into my java_post.js as alert(data)
but i cannot retrieve from my index.html
Java_post.js
var url_link ="index.html";
//On Click Select Function
$("#table_hot").on('click', 'tbody tr',function(){
$(this).addClass('selected').siblings().removeClass('selected');
var value=$(this).find('td:first').html();
$.post('PHP_post/php_post.php',
{
postvalue:value
},
function(data){
alert(data);
}
);
});
//Window Pop Out Function
function hotspot_pop(url_link){
newwindow = window.open(url_link, '', "status=yes,
height=500; width=500; resizeable=no");
}
The value is retrieve when the client click the selected table and then post into the php_post.php. The php_post.php will filter the result and return to index.html.
$filtered_students = array_filter($ARRAY, function($row) {
$hotspot_value = $_POST['postvalue'];
if($row['name'] == $hotspot_value){
return true;
}
});
echo $filtered_students;
So now i m able to retrieve the value and post into as an alert for my java_post.js but the value is no pass into index.html and i receive the error for undefined postvalue.
<html>
<script src="js/jquery-1.11.1.min.js"></script>
<body>
<div id="result"></div>
<script>
var xmlhttp_user = new XMLHttpRequest();
var url_user = "PHP_post/php_post.php";
xmlhttp_user.onreadystatechange=function() {
if (xmlhttp_user.readyState == 4 && xmlhttp_user.status == 200) {
document.getElementById("result").innerHTML=xmlhttp_user.responseText; }
}
xmlhttp_user.open("GET", url_user, true);
xmlhttp_user.send();
</script>
</body>
</html>
So my problem is now, is there any method that allow me to show the value in index.html from php_post.php. As a reminder the alert(data) from java_post.js is just a testing purpose to show the value did post and return from php_post.php
The issue you're having is that when you pass the data into your PHP file and receive the data back in your JavaScript, the information only lasts as long as your current request.
To fix this issue, consider using PHP Session variables to store your data, so that you can retrieve it later.
Example:
// php_post.php
<?php
start_session(); // initializes session for persistent data
$filtered_students = array_filter($ARRAY, function($row) {
$hotspot_value = $_POST['postvalue'];
if($row['name'] == $hotspot_value){
return true;
}
});
$_SESSION["filtered_students"] = $filtered_students; // You can now retrieve this in
// Another PHP file
?>
Now in another file (you would switch your HTML file to get from php_get.php):
//php_get.php
<?php
start_session(); // Don't forget to start the session
echo $_SESSION['filtered_students'];
?>
More information here: http://www.w3schools.com/php/php_sessions.asp
You can set the desired value into PHP session while at php_post.php.
This way, you can retrieve the session's value on any page you desire.
Related
hello I have this php file with the name ** request.php ** that has this Code:
<?php
$Password_user = 'AIzaSyA';
?>
and I have a Index.html file, and I also have a Local Storage with that name user_pass so I created a variable with the name get_spass that looks like this:
var get_spass= localStorage.getItem('user_pass');
so how can i create a request in Ajax that is able to check if the value of the Storage location is equal or not gives it Variable ** Password_user of request.php?
You have to change your php file to:
<?php
$Password_user = 'AIzaSyA';
echo $Password_user;
?>
In your html file you can fetch the file and check the password value with this code:
var get_spass= localStorage.getItem('user_pass');
var passIsCorrect = checkPassword(get_spass);
if (passIsCorrect) {
//do stuff...
}
async function checkPassword(get_spass) {
const passwordPhp = await fetch("request.php");
if (get_spass === passwordPhp) {
return true;
}
return false;
}
Note that everyone can get the request.php content. If the password need to be secret you have to implement some sort of authentication to assure the request.php file can be read only by authorized users or person.
I'm trying to pass var 'id' from the page 'a.html' to 'b.html'. The var content comes from 'code.gs' as below:
code.gs
function data(){
var id = 1;
return id;
}
Next, I get this var and I show it in 'a.html':
a.html
<?
var id = data();
?>
<h1><?= id ?></h1>
Go to B.html
By clicking 'Go to B.html', the system directs the user to there. I need to bring the same value of var 'id' from the page 'a.html' to 'b.html'.
Ps: searching for a little, I saw that there's a kind to send this var by the command 'localStorage', but it's not working for me. :(
Can anybody help me?
Use localstorage
a.html
localStorage.setItem('id',1)
b.html
var id = localStorage.getItem('id')
the other way is to put it in a js file and import it in both html
Storing & Retrieving html data on the server
Client Side JavaScript:
<script>
function saveId(v) {
google.script.run.saveKeyValue({key:'id',value:v});
}
function getId() {
google.script.run
.withSuccessHandler(function(v){
alert('The value is ' + v );
})
.getKeyValue('id');
}
</script>
Server Side Google Apps Script:
function saveKeyValue(obj) {
PropertiesService.getScriptProperties().setProperty(obj.key,obj.value);
}
function getKeyValue(key) {
return PropertiesService.getScriptProperties().getProperty(key);
}
You could also replace PropertiesService with CacheService.
Client To Server Communications
Properties Service
i am try to load B.php from A.php after execution in the function and pass some data using a post array from A.php to B.php within same time.
code list as follows
A.php
<script type="text/javascript">
alert_for_the_fucntion();
window.location.href = "B.php";
function alert_for_the_fucntion() {
$.post("B.php", {action: 'test'});
}
</script>
B.php
<?php
if (array_key_exists("action", $_POST)) {
if ($_POST['action'] == 'test') {
echo 'ok';
}
}
?>
for testing purpose i tried to echo something in the B.php. but currently this is not working. have i done any mistakes? or is there any possible method to do this.
Your code does this:
Tells the browser to navigate to B.php (using a GET request)
Triggers a POST request using XMLHttpRequest
The POST request probably gets canceled because the browser immediately leaves the page (and the XHR request is asynchronous). If it doesn't, then the response is ignored. Either way, it has no effect.
You then see the result of the GET request (which, obviously, doesn't include $_POST['action']) displayed in the browser window.
If you want to programmatically generate a POST request and display the result as a new page then you need to submit a form.
Don't use location. Don't use XMLHttpRequest (or anything that wraps around it, like $.ajax).
var f = document.createElement("form");
f.method = "POST";
f.action = "B.php";
var i = document.createElement("input");
i.type = "hidden";
i.name = "action";
i.value = "test";
f.appendChild(i);
document.body.appendChild(f);
f.submit();
If you want to process the results in JavaScript then:
Don't navigate to a different page (remove the line using `location)
Add a done handler to the Ajax code
e.g.
$.post("B.php", {action: 'test'}).done(process_response);
function process_response(data) {
document.body.appendChild(
document.createTextNode(data)
);
}
Try this:
Javascript:
<script type="text/javascript">
window.onload = alert_for_the_fucntion;
function alert_for_the_fucntion() {
$.post("B.php",
{
action: 'test'
},
function(data, status){
if(status=="success"){
alert(data);
}
}
);
}
</script>
PHP
<?php
if(isset($_POST['action'])){
echo $_POST['action'];
}
?>
I'm trying to use flask with url_for. The problem is that when I try to launch an alert with the value of the javascript variable everything seems ok, but when I try to launch a alert with the url_for the content of the variable is not printed. What I'm doing wrong? or What is missing in my code?
How can I pass a JavaScript variable into the url_for function?
html code:
<a class="dissable_user_btn" data-user_id="{{user.id}}" href="#" title="Change Status"><i class="fa fa-plug"></i>
</a>
JS Code:
<script type="text/javascript">
$(document).ready(function(){
$('.dissable_user_btn').click(function( event ) {
var user_id = $(this).data("user_id")
alert(user_id) //everything ok
alert ('{{url_for('.dissable', _id=user_id)}}'); //dont print the valur of user_id
</script>
Short answer: you can't. Flask & Jinja2 render the template on the server side (e.g. Flask is translating all of the {{ }} stuff before it sends the HTML to the web browser).
For a URL like this where you're including a variable as part of the path you'd need to build this manually in javascript. If this is an XHR endpoint I'd recommend using GET/POST to transfer the values to the server as a better best practice than constructing the URL this way. This way you can use Jinja:
$(document).ready(function(){
var baseUrl = "{{ url_for('disable') }}";
$('.dissable_user_btn').click(function(event) {
var user_id = $(this).data("user_id");
// first part = url to send data
// second part = info to send as query string (url?user=user_id)
// third parameter = function to handle response from server
$.getJSON(baseUrl, {user: user_id}, function(response) {
console.log(response);
});
});
});
I found another solution for this. My problem started when I needed to pass a variable with space.
First I created a function to remove trailing and leading spaces
function strip(str) {
return str.replace(/^\s+|\s+$/g, '');}
After that, I used the function and encoded the URL
<script type="text/javascript">
$(document).ready(function(){
$('.dissable_user_btn').click(function( event ) {
var user_id = $(this).data("user_id")
alert(user_id)
user_id = strip(user_id).replace(" ","%20");
alert ('{{url_for('.dissable', _id='user_id')}}.replace('user_id',user_id);
</script>
It worked pretty nice for me!
This is how I applied to my problem
<script>
function strip(str) {
return str.replace(/^\s+|\s+$/g, '');}
$(document).ready(function() {
$('#exportcountry').click(function() {
var elemento = document.getElementById("countryexportbtn");
var country = strip(elemento.textContent).replace(" ","%20");
$('#exportevent').load("{{ url_for('get_events',country = 'pais') }}".replace('pais',country));
});
});
</script>
I am new and just doing practices i just did:
var i= [["j.php?i=1"]]; and it sent value to php and prints but when i want some input from user it does nothing. For example:
file j.js
var input = "hello";
var send= [["j.php?i="+input]];
and in j.php
<?php
$e=$_GET['i'];
echo $e;
?>
Any idea or i am totally wrong? I am trying to have some variation. And i really did with window.location.href. But I just want to know how to do in this way var send= [[]]. Thanks
Edit:
your question is not very clear, maybe try this:
var input = "hello";
var url = "/j.php?i=" + input;
var send = [[url]];
But, it's not clear to me what you want to do with your send variable...
Original
You have to send the data to the server either using a a tag (GET method), a form (POST method) or an Ajax request (any Http verb):
<!-- Here you give a unique id to your link -->
<a id="link" href="">your link</a>
<script>
var i = "Hello";
// wait for page to be loaded
document.addEventListener("DOMContentLoaded", function(event) {
// change the href attribute of the link with the id equal to 'link'
// with whatever data contained in the i variable
// this is done after the page is loaded
document.getElementById("link").href = "/j.php?i=" + i;
});
</script>
Then, when you just click the link, it will send the variable named i containgin the value Hello to your php page.
You could also do it in this way:
<a id="link2">your link</a>
<script>
var i = "HELLO";
// wait for page to be loaded
document.addEventListener("DOMContentLoaded", function(event) {
// here we are telling javascript to change the url
// in the browser when the user clicks the link
document.getElementById('link2').onclick = function() {
window.location = '/j.php?i=' + i
}
});
</script>