This is a select & option in HTML. I use jquery here. I need to fetch the value of both select and pass the values to ajax.php where I need to use both values to check in my database and proceed with another dependent dropdown.
<label>Select Number: </label>
<select id= "number" onchange="FetchState(this.value)" required>
<option value="0">-- 0 --</option>
<option value="1">-- 1 --</option>
<option value="2">-- 2 --</option>
<option value="3">-- 3 --</option>
</select>
<label>Select letter: </label>
<select id="alphabet" required>
<option value="a">-- a --</option>
<option value="b">-- b --</option>
<option value="c">-- c --</option>
<option value="d">-- d --</option>
</select>
<select id="dependent">
</select>
This is my script code written below.
function FetchState(id) {
$("#dependent").html('');
$.ajax({
type: "POST",
url: "ajax.php",
data: {
number: id,
},
success: function(data) {
$("#dependent").html(data);
}
});
}
</script>
I need to pass two values to PHP via jquery(ajax) to continue further. Here both letter and alphabet value should be get and pass as data in jquery to ajax.php
The html is a little odd but as you will always have a selection in both dropdowns we could simply do
<!DOCTYPE html>
<html lang="en">
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
<script>
function FetchState() {
id = $('#number option:selected').val();
alp = $('#alphabet option:selected').val();
$.ajax({
type: "POST",
url: "ajax_endpoint.php",
data: {number: id, alphabet: alp},
success: function(data) {
$("#dependent").html(data);
}
});
}
</script>
</head>
<body>
<form method="POST" >
<label>Select Number: </label>
<select id= "number" onchange="FetchState()" required>
<option value="0">-- 0 --</option>
<option value="1">-- 1 --</option>
<option value="2">-- 2 --</option>
<option value="3">-- 3 --</option>
</select>
<label>Select letter: </label>
<select id="alphabet" onchange="FetchState()" required>
<option value="a">-- a --</option>
<option value="b">-- b --</option>
<option value="c">-- c --</option>
<option value="d">-- d --</option>
</select>
<select id="dependent"></select>
</form>
</body>
</html>
And if the dummy ajax_endpoint.php was this
<?php
echo '<option value="aa">aa</option>
<option value="bb">bb</option>
<option value="cc">cc</option>
<option value="dd">dd</option>';
?>
It should fill the 3rd dropdown for you
What about declaring an array, pushing to it and then firing the ajax call when you have reached two items in the array?
var bothnumbers = [];
function FetchState(id) {
bothnumbers.push(id);
console.log('your array: '+bothnumbers);
if(bothnumbers.length == 2){
console.log('fire function now that two are chosen');
$("#dependent").html('');
$.ajax({
type: "POST",
url: "ajax.php",
data: {
number: bothnumbers,
},
success: function(data) {
$("#dependent").html(data);
}
});
}
}
Our community is visited by hundreds of web development professionals every day. Ask your question and get a quick answer for free.
Find the answer in similar questions on our website.
Do you know the answer to this question? Write a quick response to it. With your help, we will make our community stronger.
PHP (from the English Hypertext Preprocessor - hypertext preprocessor) is a scripting programming language for developing web applications. Supported by most hosting providers, it is one of the most popular tools for creating dynamic websites.
The PHP scripting language has gained wide popularity due to its processing speed, simplicity, cross-platform, functionality and distribution of source codes under its own license.
https://www.php.net/
JavaScript is a multi-paradigm language that supports event-driven, functional, and mandatory (including object-oriented and prototype-based) programming types. Originally JavaScript was only used on the client side. JavaScript is now still used as a server-side programming language. To summarize, we can say that JavaScript is the language of the Internet.
https://www.javascript.com/
JQuery is arguably the most popular JavaScript library with so many features for modern development. JQuery is a fast and concise JavaScript library created by John Resig in 2006. It is a cross-platform JavaScript library designed to simplify client-side HTML scripting. Over 19 million websites are currently using jQuery! Companies like WordPress, Facebook, Google, IBM and many more rely on jQuery to provide a kind of web browsing experience.
https://jquery.com/
HTML (English "hyper text markup language" - hypertext markup language) is a special markup language that is used to create sites on the Internet.
Browsers understand html perfectly and can interpret it in an understandable way. In general, any page on the site is html-code, which the browser translates into a user-friendly form. By the way, the code of any page is available to everyone.
https://www.w3.org/html/
Welcome to the Q&A site for web developers. Here you can ask a question about the problem you are facing and get answers from other experts. We have created a user-friendly interface so that you can quickly and free of charge ask a question about a web programming problem. We also invite other experts to join our community and help other members who ask questions. In addition, you can use our search for questions with a solution.
Ask about the real problem you are facing. Describe in detail what you are doing and what you want to achieve.
Our goal is to create a strong community in which everyone will support each other. If you find a question and know the answer to it, help others with your knowledge.