Develop Reference

Set to true state a checkbox in a different page(javascript)

Here's the Script.
javascript
function linkPageContact(clicked_id){
if(clicked_id === 'website-design-check'){
$('#website-design').attr('checked',true);
window.location.href = "/contact";
}
}
}
I want to check my checkboxes when I click the button with an id=website-design-check.
Here is my HTML.
first.html
<a href="/contact" target="_blank">
<button type="button" class="btn btn-success btn-block" id="website-design-check" onclick="linkPageContact(this.id)">Appointment</button>
</a>
Here's the second HTML file where checkbox is.
second.html
<input type="checkbox" aria-label="Checkbox for following text input" id="website-design" name="website-design">
Now how can I achieve what I want base on the description given above. Can anyone help me out guys please. I'm stuck here for an hour. I can't get any reference about getting a checkbox state from another page.

To do this, you can modify your button link and add in additional parameters that you can then process on the next page.
The code for the different pages would be like:
Edit: I changed it to jQuery, it should work now.
Script
function linkPageContact(clicked_id){
if(clicked_id === 'website-design-check'){
window.location.href = "second.html?chk=1";
}
}
second page
<input type="checkbox" aria-label="Checkbox for following text input" id="website-design" name="website-design">
<script type="text/javascript">
var url = window.location.href.split("?");
if(url[1].toLowerCase().includes("chk=1")){
$('#website-design').attr('checked',true);
}
</script>

since your checkbox is in another html page, so it's totally normal that you can't get access to it from your first html page!
what I can offer u is using the localstorage to keep the id and then use it in your second page to check if it's the ID that u want or not.
so change your function to this :
function linkPageContact(clicked_id){
localStorage.setItem("chkId", "clicked_id");
window.location.href = "/contact";
}
then in your second page in page load event do this :
$(document).ready(function() {
var chkid = localStorage.getItem("chkId");
if(chkid === 'website-design-check'){
$('#website-design').attr('checked',true);
});

You can't handle to other sites via JavaScript or jQuery directly. But there's another way. You can use the GET method to achive this.
First you need to add to the link an attribute like this in your first.html:
/contact?checkbox=true
You can change the link as you want with JavaScript.
Now it will refer to the same page but it can be now different. After that you can receive the parameter with this function on the second.html.
function findGetParameter(parameterName) {
var result = null,
tmp = [];
var items = location.search.substr(1).split("&");
for (var index = 0; index < items.length; index++) {
tmp = items[index].split("=");
if (tmp[0] === parameterName) result = decodeURIComponent(tmp[1]);
}
return result;
}
I got it from this post thanks to Bakudan.
EDIT:
So here is an short theory.
When the user clicks the button on the first page, then you change the link from /contact to /contact?checkbox=true. When the user get forwarded to second.html then you change the checkbox depending on the value, which you got from the function findGetParameter('checkbox').

As all have mentioned you need to use session/query string to pass any variable/values to another page.
One click of the first button [first page] add query string parameter - http://example.com?chkboxClicked=true
<a href="secondpage.html?chkboxClicked=true>
<button>test button</button>
</a>
In the second page- check for the query string value, if present make the checkbox property to true.
In second page-
$(document).ready(function(){
if(window.location.href.contains('chkboxClicked=true')
{
$('#idOfCheckbox').prop('checked','checked');
}
})
Add it and try, it will work.

Communicating from one html file to another html file
You can solve these issue in different approaches
using localStorage
using the query parameters
Database or session to hold the data.
In your case if your application is not supporting IE lower versions localStorage will be the simple and best solution.
<!doctype html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
</head>
<body>
<a href="contact.html" target="_blank">
<button type="button" class="btn btn-success btn-block" id="website-design-check" onclick="linkPageContact(this.id)">Appointment</button>
</a>
<script>
function linkPageContact(clicked_id) {
localStorage.setItem("chkId", clicked_id);
}
</script>
</body>
</html>
<!doctype html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
</head>
<body>
<input type="checkbox" aria-label="Checkbox for following text input" id="website-design" name="website-design">
<script>
$(document).ready(function () {
var chkid = localStorage.getItem("chkId");
if (chkid === 'website-design-check') {
$('#website-design').attr('checked', true);
}
});
</script>
</body>
</html>

how to get textarea input from another HTML page

In a.html:
I have a textarea that is converted into a link after the user clicks the submit button. When the user clicks on the link they are redirected to b.html.
<textarea id="sentenceId">
</textarea>
<br>
<button type="button" id="buttonId" onclick="createLink(document.getElementById('sentenceId').value)">Submit
</button>
<p id="demo">
<a id ="link" href="b.html"></a>
</p>
In b.html:
I would like to display the original text.
In script.js:
function createLink(val) {
document.getElementById("link").innerHTML = val;
document.getElementById('buttonId').style.display = 'none';
document.getElementById('sentenceId').style.display = 'none';
}

If you want to open a new page and get the text there, you could use a post-form and an input[type="hidden"] to send the text and display it afterwards.
If you wand the link to be sendable, you'd either have to encode the text as get-parameter or save it to a database and add the id of the entry to the link.
As #Kramb already mentioned, localStorage is a possibility, but only if you stay on the same browser and both pages have the same domain.

Using localStorage
The localStorage property allows you to access a local Storage object. localStorage is similar to sessionStorage. The only difference is that, while data stored in localStorage has no expiration time, data stored in sessionStorage gets cleared when the browsing session ends—that is, when the browser is closed.
a.html
function createLink(val) {
document.getElementById("link").innerHTML = val;
document.getElementById('buttonId').style.display = 'none';
document.getElementById('sentenceId').style.display = 'none';
localStorage.setItem("textArea", val);
}
b.html
function getText(){
var textVal = localStorage.getItem("textArea");
}
Another option would be to use a query string.
a.html
function navigateTo(val){
window.href.location = "b.html?text=" + val;
}
This will pass the value of the text from textarea with the url during navigation. Once b.html has loaded, you can do the following.
b.html
function getText(){
var url = window.location.href;
var queryIndex = url.indexOf("=") + 1;
var passedText = url.substring(queryIndex);
document.getElementById('foo').value = passedText;
}

This is possible using JavaScript. You can do an AJAX call to another page on you website, and search for an element to get its content. In you're case an textarea
I wrote an example on codepen.io for you. Click here
To make things simpler im using jQuery in this example.
So how does it work?
First of, include jQuery inside the <head> tag of you're website.
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
I created the following structure
structure
root
scripts
jQuery.min.js
index.js
index.html
textarea.html
Contents of index.html
<!DOCTYPE html>
<html lang="en">
<head>
<!-- Meta -->
<meta charset="UTF-8" />
<title>My New Pen!</title>
<script type="text/javascript" src="scripts/jquery.min.js"></script>
<!-- Styles -->
<link rel="stylesheet" href="styles/index.processed.css">
</head>
<body>
<button id="clickme">To load the textarea content, click me!</button>
<div id="content">The data from the textarea will be shown here, afte you click on the button :)</div>
<!-- Scripts -->
<script src="scripts/index.js"></script>
</body>
</html>
Contents of texarea.html
<textarea id="textarea">
I am the content of the textarea inside the textarea.html file.
</textarea>
Contents of index.js
(function() {
$(document).ready(function() {
/**
* The button which triggers the ajax call
*/
var button = $("#clickme");
/**
* Register the click event
*/
button.click(function() {
$.ajax({
url: "textarea.html",
type: "GET"
}).done(function(response) {
var text = $(response).filter("#textarea").html();
$("#content").append("<br/><br/><strong>" + text + "</strong>");
});
});
});
})()
So what does index.js do exactly?
As you can see i created an Ajax call to the textarea.html file. The .done function holds the response data. The data inside it can be anything depending on the content of the textarea.html file.
$(response).filter("#textarea").html();
The above piece of code filters out the #textarea div and then gets the innerHTML using the jQuery html() function.
If you want to get the value of the textarea through the [value] attribute, you can replace above line to
$(response).filter("#textarea").val();

I believe you want to do this:
function createLink() {
var textvalue = document.getElementById('sentenceId').value;
document.getElementById("link").innerHTML = textvalue;
document.getElementById("buttonId").className ="hideme";
document.getElementById("sentenceId").className ="hideme";
}
.hideme{
display: none;
}
<textarea id="sentenceId">
</textarea>
<br>
<button id="buttonId" onclick="createLink()">Submit
</button>
<p id="demo">
<a id ="link" href="b.html"/>
</p>

Can't display language variables in javascript code using mustache.js

I'm trying to handle translations with Mustache.js and it works fine for some part of the code but not for another part.
<script>
function MyFunction() {
// If a submit button is pressed, do some stuff and run this function to display the result
var tmpText = "";
tmpText = "<b>{{someTextInJSfunction}}</b>"; // this is NOT OK
document.getElementById("totalText").innerHTML = tmpText;
}
</script>
</head>
<body>
<div id="sampleArea">
</div>
<script id="personTpl" type="text/template">
<span id="totalText"></span></p>
<b>{{ImpNotice}}</b> {{Contact}} // this is OK
</script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script src="js/mustache.js"></script>
<script>
$( document ).ready(function() {
var lang = 'en_us';
$.getJSON('json/'+lang+'.json', function(data) {
var template = $('#personTpl').html();
var html = Mustache.to_html(template, data);
$('#sampleArea').html(html);
});
});
</script>
When I click a Submit button, my JS function is called and depending on some calculation, some text should be displayed in the page. This is the part that doesn't work, {{someTextInJSfunction}} is displayed instead of the actual content of {{someTextInJSfunction}}.
The content of {{ImpNotice}} and {{Contact}} is correctly displayed because I assume the variables are located in the <script id="personTpl"> tags.
I'm not sure how to fix it for the variables located in my JS functions, such as {{someTextInJSfunction}}.

Saving var using JavaScript and redirecting to URL

I have a very simple web form containing two input fields and a submit button.
What I would like to do is save the two strings inserted and redirect to my other HTML file (which is in the same folder).
HTML:
<!DOCTYPE html>
<html>
<title>Players enter</title>
<head>
<script type="text/javascript" src="ticTac.js"></script>
<link rel="stylesheet" type="text/css" href=styleSheet.css></link>
</head>
<body>
<form >
player one name: <input type="text" id="firstname"><br>
player two name: <input type="text" id="secondname"><br>
<input type="submit" onclick="checkNames();"/>
</form>
</body>
</html>
JavaScript:
function checkNames(){
var nameOne = document.getElementById("firstname").value;
var nameTwo = document.getElementById("secondname").value;
//window.location.href = 'C:\Users\x\Desktop\hw3\tic\Game.html';
//window.location.replace("C:\Users\x\Desktop\hw3\tic\Game.html");
window.location.assign("C:\Users\x\Desktop\hw3\tic\Game.html");
}
I have commented the two other options I tried which also do not work.

You are using an HTML form... this means that your submit button will fire and try to submit your form.
In order to prevent this, you need to prevent that event from triggering. A simple modification to your JavaScript function should do the trick.
function checkNames() {
event.preventDefault();
var nameOne = document.getElementById("firstname").value;
var nameTwo = document.getElementById("secondname").value;
window.location.href = 'SOME-PATH/Game.html';
}

To redirect to a page in your computer you can use:
window.location.href = 'file:///C:/Users/x/Desktop/hw3/tic/Game.html';
There are more than one way of passing the values to another page. Here is an example using query string.
In the page that has the values.
var q = '?nameOne=' + encodeURI(nameOne) + '&nameTwo=' + encodeURI(nameTwo)
window.location.href = 'file:///C:/Users/x/Desktop/hw3/tic/Game.html' + q;
In the page receiving the values.
var nameOne = location.search.slice(1).split("&")[0].split("=")[1];
var nameTwo = location.search.slice(1).split("&")[1].split("=")[1];

Use
window.location="url";

Dynamically change text based on URL input

I am using the following code to dynamically change the text on my clients website (www.mydomain.com.au):
<script type="text/javascript">// <![CDATA[
var url = window.location.toString();
var query_string = url.split("?");
if (query_string[1]) {
var params = query_string[1].split("&");
var param_item = params[0].split("=");
param_item[param_item[0]] = unescape(param_item[1]);
document.write(param_item["city"]);
} else {
document.write("24 Hour Glass Replacement");
}
// ]]></script>
It works perfectly fine on the index page. e.g. www.mydomain.com.au/?city=test
but when I am using the same code on other pages e.g. http://www.mydomain.com.au/Brisbane.html/?city=test I get a 404 error.
Appreciate any help

Remove the / before starting querystring. So,
try http://www.mydomain.com.au/Brisbane.html?city=test instead of http://www.mydomain.com.au/Brisbane.html/?city=test