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Submit dynamical form using JQuery

I´m not really sure I can do this, but it's worth the try.
I have a table with at least 10 items coming from a Mysql database. They are items for which you can bid. The idea is that every row (therefore, every item) has a button that can be clicked to enter the bid. This button opens a popup with a text field to enter the bid and a button to submit the form.
In order to identify the item the user is bidding for, I need its id, as well as the amount bid. The amount is really easy to get, but I´m struggling a lot with the item id.
Here is what I have:
$(document).ready(function(){
$(".show").click(function() {
$("#popup").show();
var $id = document.getElementsByClassName('show')[0].value;
console.log($id);
$("#jugador").val($id);
});
$("#close, #submit").click(function() {
$("#popup").hide();
});
});
#popup {
position: relative;
z-index: 100;
padding: 10px;
}
.content {
position: absolute;
z-index: 10;
background: #ccc;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
}
.overlay {
position: fixed;
top: 0;
left: 0;
width: 100vw;
height: 100vh;
background: #000;
z-index: 5;
opacity: 0.4;
}
<td><button class="show" id="bid" value="<?php echo $row2["id"];?>"><img src="pictures/bidIcon.png" width="30" height="30"></button></td>
/*Popup*/
<div id="popup" style="display: none;">
<div class="overlay"></div>
<div class="content">
<header>
<div id="close">✖</div>
</header>
<form name="form1" method="post" action="bid.php">
<fieldset>
<label for="bid">Bid:</label>
<input type="text" name="bidAmount" id="bidAmount" size="8" />
<input type="hidden" name="item" id="item" />
<input type="submit" tabindex="-1" style="position:absolute; top:-1000px">
</fieldset>
<footer>
<button type="button" id="submit">Bid Now</button>
</footer>
</form>
</div>
</div>
I´ve been trying for a while with no luck. I will always get the item id for the first element no matter in which button I click.
Is it feasible what I want? Is this the correct approach? Should I use a different one?
Thanks a lot in advance.

Just change this line:
var $id = document.getElementsByClassName('show')[0].value;
To this:
var $id = $(this).val();
The problem is that with document.getElementsByClassName('show')[0].value you are querying the first occurrence of the .show button. With $(this) instead you will be accessing the current clicked button.
JQuery binds the events to the target where you attach the event, so this will always be a reference to the target of the event. Using $(this) will create a jQuery object of the target element permitting to apply jQuery functions to the element.
As a side note, you shouldn’t duplicate the elements ids. Every id must be unique in the html document, so it will be a good practice to make that id different for each button.
Hope it helps.

To access the current div element's Id you can use the ($this), which refers to the current javascript object.
$("div").click(function(){
alert($(this).attr('id'));
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="1">Num 1</div>
<div id="2">Num 2</div>
<div id="3">Num 3</div>
<div id="4">Num 4</div>
Here in this example, i have created div's which when clicked return's the id of that div.

When you do it like this var $id = document.getElementsByClassName('show')[0].value; it will always take the first element having class="show".
Which will contain the first item hence always gives the id of first item.
So instead of doing it like that you can do it like this:
var $id = $(this).val();
This will select the current item on which user has clicked so will give the id of that item.

appending complete html of one dive into new div

I am using JQuery for this:
Taking complete html and appending into a new div
My JQuery code:
$(document).ready(function(){
$("#addNew").click(function(){
var maindiv = document.getElementById('nestedFeilds').html();
$("#showhere").append('maindiv');
});
});
The HTML is pretty complex and lengthy so take just reference
<div class= "row" id="mainContainer">
<label for="Education" style="margin-left: 30px ; float:left;">Education</label>
<div class="col-xs-4 inner"></div>
<div class="col-xs-8 verticalLine" id="nestedFeilds" style=" margin-left: 10px ;float:left; display: none;">
In the last div, it is actually a form and I need its complete html to be shown with different name attribute when ever I click button
I am calling my function like this
<div id= "showhere"></div>
<div style="margin-left: 133px;float:left;">
<a id="addNew"> Add Education</a>
</div>

If you want to get innerHTML, you should use element.innerHTML, and if you want to append previously saved inner HTML, you can use element.append(variableWithPreviousInnerHTML). Here is the working example:
$(document).ready(function() {
$("#addNew").click(function() {
var maindiv = document.getElementById('nestedFeilds').innerHTML;
$("#showhere").append(maindiv);
});
});
div {
width: 100px;
height: 100px;
border: 1px gray solid;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="nestedFeilds">Content from #nestedFeilds</div>
<div id="showhere"></div>
<button id="addNew">Click</button>
If anything isn't clear, feel free to ask.

stuck with onclick tried google couldn't find answer

i need help getting this to work, tried everything google had to offer.. but still stuck. what i need it to do is load the value of (div id="availablecredits") to (div id="beta") on click. can any body help me out?
onclick="javascript:document.getElementById('beta').value=(javascript:document.getElementById('availablecredits').value)"
i also tried onclick="javascript:document.getElementById('beta').value=('#availablecredits')"

The property value is common for input elements like <input>, <select>, <textarea> and <button>
I think what you want is to copy a content of a <div> element to another div. If it's the case, use innerHTML instead of value.
Here is a snippet, just click on the gray area.
#div-two {
min-height: 20px;
background: #CCC;
}
<div id="div-one">
Hello this is #div-one
</div>
<div id="div-two" onclick="document.getElementById('div-two').innerHTML=document.getElementById('div-one').innerHTML"></div>
SNIPPET #2
You've defined a third <div> which you use as trigger but you can't click it if it's not visible, because it's height is 0. Specify some text inside it, then it's visible and the JS part work. Take a look at the snippet.
#getCredits {
background: #CCC;
}
<div id="beta">0.00</div>
<div id="availablecredits">500</div>
<div id="getCredits" onclick="document.getElementById('beta').innerHTML=document.getElementById('availablecredits').innerHTML">Click here to get available credits</div>
SNIPPET #3 - jQuery
$('#getCredits').click(function() {
$("#beta").html($('#availablecredits').html());
});;
#getCredits {
background: #CCC;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="beta">0.00</div>
<div id="availablecredits">500</div>
<div id="getCredits">Click here to get available credits</div>

Simple javascript function, change the ids in the function call to those of the elements in question.
<script>
function set_value( src,tgt ){
document.getElementById( tgt ).innerHTML=document.getElementById( src ).innerHTML;
}
</script>
<style>.p5{ display:block; padding:1rem; margin:1rem; border:1px solid black;}</style>
<div class='p5' id='src_div' onclick="set_value('src_div','tgt_div')">Weebles wobble but they don't fall down!</div>
<div class='p5' id='tgt_div'></div>
Or you can use a link to set the value

you should try to avoid writing inline event.try this:
<style>
#getCredits {
background: #CCC;
}
</style>
<div id="beta">0.00</div>
<div id="availablecredits">500</div>
<div id="getCredits">Click here to get available credits</div>
<script>
document.getElementById('getCredits').addEventListener("click",function(){
document.getElementById('beta').innerHTML=document.getElementById('availablecredits').innerHTML;
});
</script>
Why inline css and javascript are bad:http://robertnyman.com/2008/11/20/why-inline-css-and-javascript-code-is-such-a-bad-thing/

The .val() method is sometimes useful:
var input = $("#Input").val();

Click event and for loop

HTML code:
<div class="test" id="inner1">
ONE
</div>
<div class="test" id="inner2">
TWO
</div>
<div class="test" id="inner3">
THREE
</div>
<div class="test1" id="outer1">
ONE
</div>
<div class="test1" id="outer2">
TWO
</div>
<div class="test1" id="outer3">
THREE
</div>
Javascript code:
<script type="text/javascript">
for (var i=1;i<=3;i++)
{
$("#inner"+i).click(function () {
$("#outer"+i).css("background-color","blue")
});
}
</script>
and the CSS:
.test{
width: 100px;
padding: 10px;
background-color: green;
margin-bottom:10px;
cursor:pointer;
}
.test1{
width: 100px;
padding: 10px;
background-color: red;
margin-bottom:10px;
}
What I want is to change background color of outer1 by clicking on inner1, change background color of outer2 by clicking on inner2 and change background color of outer3 by clicking on inner3. The above code does not work since it looks for outer4 (i=4) which does not exist when event click is triggered... Do you have any idea how to implement the above with some kind of loop?
Thank you
http://jsfiddle.net/Lpwmyspo/1/

When you iterate like that, the i inside the click function isn't evaluated until you actually click something, and at that time the loop has finished and the value of i is the last thing it was set to in the loop.
The real question is why you're using a loop to begin with when you can use the attribute-starts-with selector and this instead
$('[id^="inner"]').on('click', function () {
$('#outer' + this.id.slice(-1)).css("background-color","blue");
});
FIDDLE

How about?
$(".test").on("click", function() {
var which = this.id.replace(/^inner/, "outer");
$(".test1").css("background-color","transparent"); // in case you need to reset the background
$("#" + which).css("background-color","blue");
});
Demo#Fiddle

Do it in the following way:
<div class="test" id="inner1" onclick="abc(this)">
ONE
</div>
<div class="test" id="inner2" onclick="abc(this)">
TWO
</div>
<div class="test" id="inner3" onclick="abc(this)">
THREE
</div>
<div class="test1" id="outer1">
ONE
</div>
<div class="test1" id="outer2">
TWO
</div>
<div class="test1" id="outer3">
THREE
</div>
and the JavaScript part as follows:
<script type="text/javascript">
function abc(e){
var id = e.id;
var lastchar = id.substr(id.length -1);
document.getElementById("outer"+lastchar).style.backgroundColor='blue';
}
</script>

Change href when anchor is clicked

I have a question about how I can dynamically change a href="" in a button.
The jsfiddle below shows a button fixed at the bottom of the viewport starting at the landing page:
http://jsfiddle.net/Hm6mA/3/
The html of the button is like so:
<div class="button">
<a href="#first" class="" style="width: 80px; height: 80px; opacity: 1;">
<img src="img/down.png" alt="down">
</a>
</div>
When it is clicked I want it to scroll to the next section and change the href="" to the following section of the page. So, when it is first clicked, the href will change to #second. It would obviously also need to change when the user manually scrolls past a section.
This is for a single page website. How would I go about such a thing?

Use .prop() to change its value
$(".button").on('click', function(){
$('.button').find('a').prop('href', '#services');
});
Demo

You can use fullPage.js plugin to achieve what you want. Maybe it is faster than coding it from cero :)
Demo fullPaje.js
Page

I am not used to jquery. Here is a pure javascript solution. It surely changes the hash value.
<body>
<div id="sections">
<section id="s100">asdfasd</section>
<section id="s101"></section>
<section id="s102"></section>
<section id="s103"></section>
<section id="s104">asdfasdasdfsdf</section>
<section id="s105"></section>
</div>
<div class="nav-bar">
<a id="next-button" class="button" href="#s100">Next</a>
</div>
<script type="text/javascript">
var sections = document.getElementById("sections");
var nextButton = document.getElementById('next-button');
sections.onscroll = function (evt) {
}
var counter = 100;
var limit = 105;
// closure
nextButton.onmouseup = function (evt) {
var incCounter = function () {
// add your custom conditions here
if(counter <= limit)
return counter++;
return 0;
};
var c = incCounter();
if(c != 0)
this.setAttribute('href', "#s" + c);
}
</script>
</body>
CSS
html, body {
height: 100%;
width: 100%;
overflow: hidden;
}
#sections {
height: 50%;
width: 100%;
overflow: scroll;
}
.nav-bar {
margin: 30px 20px;
}
.button {
text-decoration: none;
border: 1px solid #999;
padding: 10px;
font-size: 120%;
}

I have written a small jQuery plugin for that, just pushed it to GitHub. https://github.com/ferdinandtorggler/scrollstack
What you basically want to do is calling
$('.button').scrollstack({stack: ['#first', '#second', ... ]});
You dont even need the link when you call it on the button. So check it out and let me know if it works for you. ;)
Here you can try it and read more: http://ferdinandtorggler.github.io/scrollstack/