I am trying to pass value to another page and read the value in the another page. I use only JavaScript and jQuery. Not use others language as PHP. I don't want to be as like (http://www.example.com/?value=test). I am trying to use POST or GET method.
On first page:
$.post("second_page.html",{q:"test"});
window.location.replace("second_page.html");
On second page:
var location_query = window.location.search.substring(1);
var vars = location_query.split("&");
for (var i in vars) {
var param = vars[i].split("=");
params[param[0].toString()] = param[1];
}
If I pass value as like http://www.example.com/?q=test , the second page script is read the value, but I use this line: $.post("second.html",{q:"test"}); not read.
How to pass value from first page to another static page via JavaScript or jQuery or ajax?
See this post says:
POST data is data that is handled server side. And Javascript is on client side. So there is no way you can read a post data using JavaScript.
but you can use cookies to read and store values:
<script src="/path/to/jquery.cookie.js"></script>
you can get it from here
Try with reading the documentation and see if this works for you.
Without using GET or POST you can transfer the content using HTML5 Local Storage or
Web SQL
$.post and $.get send AJAX request and waiting response on current page, you cant send params for next window.location.replace by this.
Use url get-params window.location.replace("404.html?q=404"); and look this for get params on second page.
Related
I want to to pass a js variable to another page ..what to do..code is given bellow..
Code
`
$('#disInfo').on('click','tr',function(){
var obj = $(this);
var result= obj.find('td').eq(1).html();
window.location.href='http://localhost/Trying/search_cus.php';
});
`
I want to send the value of result variable with page link and how to receive the value in another page
You could pass it via an url parameter. If result contains html or characters that cannot be used in an url then you need to encode it first.
$('#disInfo').on('click','tr',function(){
var obj = $(this);
var result = encodeURIComponent( obj.find('td').eq(1).html() );
window.location.href='http://localhost/Trying/search_cus.php?result=' + result;
});
On the target page you can get url parameters via window.location.search ... there's plenty of examples on stackoverflow on how to do that.
NOTE: be aware that the server will also get the request for ?result=whatever. If the server side code processes this (eg PHP: $_GET['result']) you must ensure it sanitizes the value to prevent malicious code injection.
BTW, other ways of passing data is via cookies, sessionStorage, localStorage, etc.
I need to load data for my JavaScript app to use. I would like to load the following:
userlist JSON
milestones JSON
Tags JSON
user ACL permissions JSON
These 4 items of data from the server as JSON should be loaded using AJAX but only loaded once.
So I need code that will check to see if the data is loaded already and if it is, use it. If it is not loaded yet, it would make an AJAX request and load the data, and then use it.
I have multiple JavaScript files which need access to this data so I want to make sure that any of them can access it, and whichever once calls for it first will load it using AJAX and make it available for the other scripts to call it without making multiple repeat AJAX requests.
How could I go about this using JavaScript and jQuery?
A basic example would be super appreciated and useful. Thank you
If any of these are not set, load them using AJAX. After loading with AJAX, set these vars for the next caller to access them without a new AJAX request being made...
var userList = userJsonData;
var milestoneList = milestoneJsonData;
var tagList = tagJsonData;
var useAclPermissions = useAclPermissionsJsonData;
Just store the data in a global javascript variable, which is set to null, when your page loads. The first script which loads the data, stores it in the variable, all the other scripts try to access the content of the variable, and if not set, load it:
var milestoneData = null;
function getMilestoneData() {
if (milestoneData === null) {
//make the ajax request, and populate milestoneData variable
} else return milestoneData;
}
According to can i use you can check out localstorage aka webstorage. If you can use it, it might solve your issues. There is a jQuery plugin available. jstorage is an alternative, and has a really simple example at the bottom of the page. Hope this helps.
I'm writing a system in HTML5 and Javascript, using a webservice to get data in database.
I have just one page, the index.html, the other pages i load in a <div>
The thing is, i have one page to edit and add new users.
When a load this page for add new user, i do this:
$("#box-content").load("views/motorista_add.html");
But, i want send a parameter or something else, to tell to 'motorista_add.html' load data from webservice to edit an user. I've tried this:
$("#box-content").load("views/motorista_add.html?id=1");
And i try to get using this:
function getUrlVar(key) {
var re = new RegExp('(?:\\?|&)' + key + '=(.*?)(?=&|$)', 'gi');
var r = [], m;
while ((m = re.exec(document.location.search)) != null)
r.push(m[1]);
return r;
}
But don't work.
Have i an way to do this without use PHP?
This won't work. Suppose your are loading the motorista_add.html in a page index.html. Then the JS code, the function getUrlVar(), will execute on the page index.html. So document.location that the function will get won't be motorista_add.html but index.html.
So Yes. To do the stuff you are intending, you need server side language, like PHP. Now, on the server side, you get the id parameter via GET variable and use it to build up your motorista_add.php.
You can pass data this way:
$("#box-content").load("views/motorista_add.html", { id : 1 });
Note: The POST method is used if data is provided as an object (like the example above); otherwise, GET is assumed. More info: https://api.jquery.com/load/
I want to pass the object to the new page by using only client side script(javascript),
and I want to read the data back when the new page is loads, but I could not find any tutorial or method to get it.
function postToURL(path, parameters) {
var form = $('<form></form>');
form.attr("method", "post");
form.attr("action", path);
$.each(parameters, function(key, value) {
var field = $('<input></input>');
field.attr("type", "hidden");
field.attr("name", key);
field.attr("value", value);
form.append(field);
});
// The form needs to be a part of the document in
// order for us to be able to submit it.
$(document.body).append(form);
form.submit();
}
The POST message sent to the server to retrieve the current page is not exposed, by the browser, to JavaScript in that page, so you cannot.
Pass the data via some other technique (such as through the URL, or localstorage).
Yeah, POST data is only handled and seen by the server side (ex. PHP). Javascript is on the client side so it will never be able to see that data unless the POST data first gets passed to server side and that server side in turn hands it off to the client side (ex. Javascript).
Consider using GET as your method in your code above so that you can pass the parameters inside the actual URL to make it accessible to the browser / client / Javascript.
parameters can be parsed from a JSON-encoded string. If you build your parameters programmically (in the previous step) like:
parameters = {};
parameters['USA'] = 'Washington DC';
parameters['UK'] = 'London';
You can create a flat JSON String representing your structured data by:
parametersString = JSON.stringify(parameters);
and end up with something like this:
"{'USA': 'Washington DC', 'UK': 'London'}"
You can store this string in a cookie, or in a query string or fragment part of the URL.
Your next page can read back this value on the following page, and re-create the structured parameters by decoding the JSON string like:
parameters = JSON.parse(parametersString);
and you're getting the original data back, on which you can run JQuery's each.
I want to load data into a checkout page using .load() to load the pages in a modal window. The data that needs to be loaded is a shipping price value, that needs to be usable on the loaded page.
JS
function totalCalc() {
var shipping = ($('#shippingform input[name="shipping"]').val());
$('#cartdialog').load("/ash/shop/checkout.php",[$('#shippingform input[name="shipping"]')]);
alert(shipping);
}
CHECKOUT.PHP
$myTotal = ($subtotal + $_POST['shipping']);
I need the value which is shown through the "alert(shipping);" to be a usable value on checkout.php. You'll see I try to $_POST[] it in a php variable, but it wont work. I must be sending the data wrong...
Per the jQuery API, data sent as a query-string format string through .load() is treated as GET. Data sent as a JSON object is treated as POST. Basically, send it like this:
.load("/ash/show/checkout.php", {shipping: shipping});
As it seems you're using jQuery: http://api.jquery.com/jQuery.post/
or if you want proper control over it, use the ajax method: http://api.jquery.com/jQuery.ajax/
Alternatively, you could add the shipping cost to the URL and use $_GET