Develop Reference

Monitor the changes in table using JavaScript or HTML

I want to change the total price when the count or unit price of the products are changed on the website. I know I should use the onChange function, but I have no idea about how to write the JavaScript code.
<table id="productTable" class="layui-table">
<thead>
<tr>
<th>No.</th>
<th>PART NUMBER</th>
<th>DESCRIPTION</th>
<th>QTY(PCS)</th>
<th>UNIT PRICE (USD)</th>
<th>AMOUNT(USD)</th>
<th>OPRATION</th>
</tr>
</thead>
<tbody id="columns">
<tr style="display:none">
<td>1</td>
<td><input type="hidden" name="numberList"></td>
<td><input type="hidden" name="remarkList"></td>
<td><input type="hidden" name="countList"></td>
<td><input type="hidden" name="priceList"></td>
<td><input type="hidden" name="totalPriceList"></td>
</tr>
<tr th:each="orderProduct:${orderProducts}">
<td th:text="${orderProducts.indexOf(orderProduct)+1}"></td>
<td contenteditable="true" >
<input type="text" name="numberList" class="layui-input number" th:value="${orderProduct.number}">
</td>
<td contenteditable="true" >
<input type="text" name="remarkList" class="layui-input remark" th:value="${orderProduct.remark}">
</td>
<td id="productCoun" contenteditable="true" >
<input id="productCount" type="text" name="countList" onchange="update()" class="layui-input count"
th:value="${orderProduct.count}">
</td>
<td id="normalPric" contenteditable="true" >
<input id="normalPrice" type="text" name="priceList" onchange="update()" class="layui-input price"
th:value="${orderProduct.price}">
</td>
<td id="totalPric" th:text="${orderProduct.price}*${orderProduct.count}">
<input id="total" type="text" name="totalPriceList" class="layui-input price"
th:text="${orderProduct.price}*${orderProduct.count}">
</td>
<td>
Edit
<a href="javascript:void(0)" class="delBtn redType" onclick='delColumns(this)'>Del</a>
</td>
</tr>
</tbody>
</table>
I hope that the totalPrice = count*price could refresh whenever the user changes one of those values.

You can easily monitor the pointed input fields (#productCount and #normalPrice) and change the value of #total according to it. In the code below, I use the input event and I'm not using inline event handlers, but rather the function addEventListener() (know why).
const productCountInput = document.querySelector('#productCount');
const productPriceInput = document.querySelector('#normalPrice');
const totalPriceInput = document.querySelector('#total');
function updateTotalPrice() {
totalPriceInput.value = (parseFloat(productCountInput.value) * parseFloat(productPriceInput.value)) || 0;
}
productCountInput.addEventListener('input', updateTotalPrice);
productPriceInput.addEventListener('input', updateTotalPrice);
<table id="productTable" class="layui-table">
<thead>
<tr>
<th>No.</th>
<th>PART NUMBER</th>
<th>DESCRIPTION</th>
<th>QTY(PCS)</th>
<th>UNIT PRICE (USD)</th>
<th>AMOUNT(USD)</th>
<th>OPRATION</th>
</tr>
</thead>
<tbody id="columns">
<tr style="display:none">
<td>1</td>
<td><input type="hidden" name="numberList"></td>
<td><input type="hidden" name="remarkList"></td>
<td><input type="hidden" name="countList"></td>
<td><input type="hidden" name="priceList"></td>
<td><input type="hidden" name="totalPriceList"></td>
</tr>
<tr th:each="orderProduct:${orderProducts}">
<td th:text="${orderProducts.indexOf(orderProduct)+1}"></td>
<td contenteditable="true">
<input type="text" name="numberList" class="layui-input number" th:value="${orderProduct.number}">
</td>
<td contenteditable="true">
<input type="text" name="remarkList" class="layui-input remark" th:value="${orderProduct.remark}">
</td>
<td id="productCoun" contenteditable="true">
<input id="productCount" type="text" name="countList" class="layui-input count" th:value="${orderProduct.count}">
</td>
<td id="normalPric" contenteditable="true">
<input id="normalPrice" type="text" name="priceList" class="layui-input price" th:value="${orderProduct.price}">
</td>
<td id="totalPric" th:text="${orderProduct.price}*${orderProduct.count}">
<input id="total" type="text" name="totalPriceList" class="layui-input price" th:text="${orderProduct.price}*${orderProduct.count}">
</td>
<td>
Edit
Del
</td>
</tr>
</tbody>
</table>

Make the JavaScript link hide onClick

I have a form page and certain items only appear on the list if a link is clicked on. I want the link to hide when it is clicked on and the action it calls un-hides.
This is my test page:
function toggle_it(itemID) {
// Toggle visibility between none and ''
if ((document.getElementById(itemID).style.display == 'none')) {
document.getElementById(itemID).style.display = ''
event.preventDefault()
} else {
document.getElementById(itemID).style.display = 'none';
event.preventDefault()
}
}
<table width="500" border="1" cellpadding="3">
<cfform action="" method="POST">
<tr>
<td align="center"><strong>ID</strong>
</td>
<td align="center"><strong>DESCRIPTION</strong>
</td>
<td align="center">
<strong>SAY IT</strong>
</td>
</tr>
<tr>
<td align="center">a</td>
<td>
The field with no name
</td>
<td>
<cfinput type="Text" name="aaa" value="">
</td>
</tr>
<tr id="tr1" style="display:none">
<td align="center">a1</td>
<td>Add-on1</td>
<td>
<cfinput type="Text" name="a1" value="Add-on1">
</td>
</tr>
<tr id="tr2" style="display:none">
<td align="center">a2</td>
<td>Add-on2</td>
<td>
<cfinput type="Text" name="a2" value="Add-on2">
</td>
</tr>
<tr id="tr3" style="display:none">
<td align="center">a3</td>
<td>Add-on - Daily1</td>
<td>
<cfinput type="Text" name="a1d" value="Add-on - Daily1">
</td>
</tr>
<tr id="tr4" style="display:none">
<td align="center">a4</td>
<td>Add-on - Daily2</td>
<td>
<cfinput type="Text" name="a2d" value="Add-on - Daily2">
</td>
</tr>
<tr>
<td colspan=3>
<input type="submit" name="Submit" value="Submit">
</td>
</tr>
</cfform>
</table>
<!--- ----------------------------------------------------------------- --->
<table border="0">
<tr>
<td align="right">Add-on1: </td>
<td>Add-on1
</td>
</tr>
<tr>
<td align="right">Add-on2: </td>
<td>Add-on2
</td>
</tr>
<tr>
<td align="right">Add-on3 - Daily1: </td>
<td>Add-on - Daily1
</td>
</tr>
<tr>
<td align="right">Add-on4 - Daily2: </td>
<td>Add-on - Daily2
</td>
</tr>
</table>
The code is in CF but this is a JavaScript function.
BTW. Thank you whoever wrote the original script I found on Stackoverflow a while back.

Plunker
Description: Gave html elements for toggle unique ids. Also needed to update the javascript to get the parent element of the parent element of the link clicked. This only works when there are two elements to reach the tr.
Importantly, this code has an extra unhide that isn't needed...since we are hiding it and there is nothing to click.
HTML
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="style.css">
<script src="script.js"></script>
</head>
<body>
<table width="500" border="1" cellpadding="3">
<cfform action="" method="POST">
<tr>
<td align="center"><strong>ID</strong></td>
<td align="center"><strong>DESCRIPTION</strong></td>
<td align="center">
<strong>SAY IT</strong>
</td>
</tr>
<tr>
<td align="center">a</td>
<td>
The field with no name
</td>
<td>
<cfinput type="Text" name="aaa" value="">
</td>
</tr>
<tr id="tr1" style="display:none">
<td align="center">a1</td>
<td>Add-on1</td>
<td>
<cfinput type="Text" name="a1" value="Add-on1">
</td>
</tr>
<tr id="tr2" style="display:none">
<td align="center">a2</td>
<td>Add-on2</td>
<td>
<cfinput type="Text" name="a2" value="Add-on2">
</td>
</tr>
<tr id="tr3" style="display:none">
<td align="center">a3</td>
<td>Add-on - Daily1</td>
<td>
<cfinput type="Text" name="a1d" value="Add-on - Daily1">
</td>
</tr>
<tr id="tr4" style="display:none">
<td align="center">a4</td>
<td>Add-on - Daily2</td>
<td>
<cfinput type="Text" name="a2d" value="Add-on - Daily2">
</td>
</tr>
<tr>
<td colspan=3>
<input type="submit" name="Submit" value="Submit"></td>
</tr>
</cfform>
</table>
<!--- ----------------------------------------------------------------- --->
<table border="0">
<tr>
<td align="right">Add-on1: </td>
<td>Add-on1</td>
</tr>
<tr>
<td align="right">Add-on2: </td>
<td>Add-on2</td>
</tr>
<tr>
<td align="right">Add-on3 - Daily1: </td>
<td>Add-on - Daily1</td>
</tr>
<tr>
<td align="right">Add-on4 - Daily2: </td>
<td>Add-on - Daily2</td>
</tr>
</table>
</body>
</html>
JS
// Code goes here
function toggle_it(itemClickedID, itemID) {
// Toggle visibility between none and ''
if ((document.getElementById(itemID).style.display == 'none')) {
document.getElementById(itemID).style.display = '';
//gets the parent element of the parent element which is the row
document.getElementById(itemClickedID).parentElement.parentElement.style.display = 'none';
event.preventDefault();
} else {
event.preventDefault();
//gets the parent element of the parent element which is the row
document.getElementById(itemClickedID).parentElement.parentElement.style.display = '';
document.getElementById(itemID).style.display = 'none';
}
}

javascript calculator with click to calculate

I have a working calculator on my website that is used for business expense savings estimation. currently the calculator auto-calculates in real time as the user inputs numbers. i would like the user to have to click a calculate button in order to see any results. could someone please help as i am having a hard time adjusting the code myself. here is the current code:
function calc() {
var cost = document.getElementById('phone').value * (.30) +
document.getElementById('energy').value * (.05) +
document.getElementById('cell').value * (.30) + document.getElementById('office').value * (.15) + document.getElementById('card').value *
(.35) + document.getElementById('waste').value * (.5) +
document.getElementById('payroll').value * (.5);
document.getElementById('cost').value = (cost * 12).toFixed(2);
}
<form name="form1" method="post" action="">
<table width="33%" align="center">
<tr>
<td valign="top" style="text-align: center"><strong>
Category</strong>
</td>
<td style="text-align: center"><strong>Monthly Expenses</strong>
</td>
</tr>
<tr>
<td valign="top"> </td>
<td> </td>
</tr>
<tr>
<td width="47%" valign="top">Telephone & Internet</td>
<td width="53%">
<input name="phone" id="phone" type="text" onchange="calc
()" />
</td>
</tr>
<tr>
<td valign="top">Energy</td>
<td>
<input name="energy" id="energy" type="text" onchange="calc()" />
</td>
</tr>
<tr>
<td valign="top">Cell Phone</td>
<td>
<input name="cell" id="cell" type="text" onchange="calc()" />
</td>
</tr>
<tr>
<td valign="top">Office Supplies</td>
<td>
<input name="office" id="office" type="text" onchange="calc()" />
</td>
</tr>
<tr>
<td valign="top">Merchant Card Fees</td>
<td>
<input name="card" id="card" type="text" onchange="calc()" />
</td>
</tr>
<tr>
<td valign="top">Waste Removal</td>
<td>
<input name="waste" id="waste" type="text" onchange="calc()" />
</td>
</tr>
<tr>
<td height="31" valign="top">3rd Party Payroll Fees</td>
<td>
<input name="payroll" id="payroll" type="text" onchange="calc
()" />
</td>
</tr>
<tr>
</tr>
</table>
<p> </p>
<div align="center">
<table width="33%" border="0">
<tr>
<td width="54%" height="31" valign="top"><strong>Estimated Annual
Savings:</strong>
</td>
<td width="46%">
<textarea name="cost" rows="1" id="cost" readonly style="overflow:hidden" input type="number"></textarea>
</td>
</tr>

Currently, your inputs are set up to call calc() whenever their onchange event is fired. This happens whenever the value is changed and the input is blurred (no longer in focus).
Remove the onchange="calc()" attribute on all your inputs, and add a button whever it makes sense to on your page with onclick="calc()":
<button onclick="calc()">Calculate</button>

Place button with Javascript event outside form
<button onclick="calc();">Calculate</button>

Delete all onchange="calc()" and add this html code to your page, that's it.
<button onclick="calc()">Calculate Expenses</button>

Remove the call to onchange="calc()" from all.
Put <div align="center">
<table width="33%" border="0">
<tr>
<td align="Center">
<input type="button" value="Click To Calculate" onclick="calc()" />
</td>
</tr>
</div>

How to dynamically adjust html table based on browser window size

I want my site to display differently based on the size of the web browser. Based on the questions/answers from other users, I got this to work with JavaScript onload. But I can't get it to work dynamically -- that is to say, in real-time, as users are adjusting the window. They have to refresh to get the format of the webpage to change.
Here is my current code:
<table class="index_table" border="0">
<tr>
<!--BELOW IS JAVASCRIPT FOR ADJUSTING HTML BASED ON WINDOW SIZE -->
<script>
if (window.innerWidth > 900){
document.write('<td rowspan="3" class="index_article"></td>');
}
</script>
<!-- END OF JAVASCRIPT -->
<td class="index_article_light">
<h2 class="index_instructions_subheader">INSERT HEADER HERE</h2>
<p class="index_instructions">INSERT PARAGRAPH HERE.</p>
<p class="index_instructions">INSERT PARAGRAPH HERE. </p>
<br />
<form action="signup.html" style="vertical-align:top;">
<table border="0" style="margin-left:auto;margin-right:auto;width:400px;">
<tr>
<td>
<input type="text" name="search" class="firstname" value=" First name">
</td>
<td>
<input type="text" name="search" class="lastname" value=" Last name">
</td>
</tr>
<tr>
<td colspan="2">
<input type="text" name="search" class="email" value=" Email">
</td>
</tr>
<tr>
<td colspan="2">
<div style="color:#979797;">Password: <br /><input type="password" name="password" class="password" value="Password"></div>
</td>
</tr>
<tr>
<td>
<div style="color:#979797;">Verify password: <input type="password" name="verify_passwords" class="password" value="Password"></div>
</td>
</tr>
<tr>
<td colspan="2">
<select>
<option value="kent">INSERT LIST HERE</option>
</select>
</tr>
</tr>
<tr>
<td colspan="2">
<input type="submit" value="signup!" style="float:right;" id="result_submit">
</td>
</tr>
</table>
</form>
</td>
</tr>
<!--BELOW IS JAVASCRIPT FOR ADJUSTING HTML BASED ON WINDOW SIZE -->
<script>
if (window.innerWidth < 900){
document.write('<tr><td class="index_article" style="height:200px;"></td></tr>');
}
</script>
<!-- END OF JAVASCRIPT -->
Note: I know I shouldn't be used tables, I should be using divs. But that's another issue... I started building this website before I knew that. I also know it's pretty sloppy. So just bear with me. I'm trying to just go with it until I have time to fix it up.

You shouldn't use JavaScript to make responsive web design. Use CSS instead, with media querys. So you write your HTML:
<table class="index_table" border="0">
<tr>
<!--This only will display on screen-width>900-->
<td id="big_device_index" rowspan="3" class="index_article"></td>
<td class="index_article_light">
<h2 class="index_instructions_subheader">INSERT HEADER HERE</h2>
<p class="index_instructions">INSERT PARAGRAPH HERE.</p>
<p class="index_instructions">INSERT PARAGRAPH HERE. </p>
<br />
<form action="signup.html" style="vertical-align:top;">
<table border="0" style="margin-left:auto;margin-right:auto;width:400px;">
<tr>
<td>
<input type="text" name="search" class="firstname" value=" First name">
</td>
<td>
<input type="text" name="search" class="lastname" value=" Last name">
</td>
</tr>
<tr>
<td colspan="2">
<input type="text" name="search" class="email" value=" Email">
</td>
</tr>
<tr>
<td colspan="2">
<div style="color:#979797;">Password: <br /><input type="password" name="password" class="password" value="Password"></div>
</td>
</tr>
<tr>
<td>
<div style="color:#979797;">Verify password: <input type="password" name="verify_passwords" class="password" value="Password"></div>
</td>
</tr>
<tr>
<td colspan="2">
<select>
<option value="kent">INSERT LIST HERE</option>
</select>
</tr>
</tr>
<tr>
<td colspan="2">
<input type="submit" value="signup!" style="float:right;" id="result_submit">
</td>
</tr>
</table>
</form>
</td>
</tr>
<!--This only will display on screen-width<900-->
<tr id="small_device_index"><td class="index_article" style="height:200px;"></td></tr>
Use the following CSS:
#media all and (max-width: 899px) {
#big_device_index {
display: none;
}
#media all and (min-width: 900px) {
#small_device_index {
display: none;
}
You can find out more about media queries here
}

Add this outside of if (window.innerWidth > 900){.....
$(window).resize(function(){
if (window.innerWidth > 900){
$('.index_article').remove();
$('.index_table).find('tr:first').append('<td rowspan="3" class="index_article"></td>');
}
}
hope this will help you, make sure to include fisrt jquery.min.js

click the content slide up and slide down the following content?

<table>
<tr class="clicke">
<td colspan="2">
<img src="images/title_.gif" vspace="0" hspace="0" width="690" height="65"
border="0" alt="" />
</td>
</tr>
<tr class="tbl_even">
<td class="required">Name (First, Middle Initial, Last)</td>
<td>
<input type="text" name="realname" />
</td>
</tr>
<tr class="tbl_odd">
<td>Birth Date</td>
<td>
<input type="text" name="Birth Date" />
</td>
</tr>
<tr class="clicke">
<td colspan="2">
<img src="images/informati.gif" vspace="0" hspace="0" width="690" height="65"
border="0" alt="" />
</td>
</tr>
<tr class="tbl_odd">
<td>Present Address</td>
<td>
<input type="text" name="Present Address" style="width:250px;" />
</td>
</tr>
<tr class="tbl_even">
<td class="required">City</td>
<td>
<input type="text" name="City" value="credit-application.php" />
</td>
</tr>
</table>
when click the clicke class tr, the following tr will hide with slow up untill the next clicke tr. when click again, the following tr content will show with slow down.
my code:
$(document).ready(function(){
$(".clicke").click(function(){
$("tr").slideToggle("slow");
}
);
});
but all the tr are effect, which are not i want, how to determine the related tr content. thank you
i am sorry maybe i didn't say the question clear.
eg:
<tr class="clicke">
</tr>
click the tr. those tr will be show/hide
<tr class="tbl_even">
<td class="required">Name (First, Middle Initial, Last)</td>
<td>
<input type="text" name="realname" />
</td>
</tr>
<tr class="tbl_odd">
<td>Birth Date</td>
<td>
<input type="text" name="Birth Date" />
</td>
</tr>

EDIT: I see you've updated your question to make your intent clearer. I think the best way to achieve what you want is to group the form fields in one element, and toggle that element.
I think this is preferable to animating multiple table rows simultaneously, since I assume your goal is to animate all the associated fields at once, in a single animation.
Here's how you might do that:
<h2 class="clicke">CLICK ME #1</h2>
<table>
<tr class="tbl_even">
<td class="required">Name (First, Middle Initial, Last)</td>
<td><input type="text" name="realname" /></td>
</tr>
<tr class="tbl_odd">
<td>Birth Date</td>
<td><input type="text" name="Birth Date" /></td>
</tr>
</table>
<h2 class="clicke">CLICK ME #2</h2>
<table>
<tr class="tbl_odd">
<td>Present Address</td>
<td><input type="text" name="Present Address" /></td>
</tr>
<tr class="tbl_even">
<td class="required">City</td>
<td><input type="text" name="City" /></td>
</tr>
</table>​​​
jQuery:
$(document).ready(function(){
$('.clicke').next('table').hide();
$('.clicke').click(function(){
$(this).next('table').slideToggle('slow');
});
});​
Here is a demo: http://jsfiddle.net/ZvFQm/1/

I'm not secure to have correctly understend, but this could be a solution:
$(".clicke").toggle(
function(){
$(this).parent().find("tr").eq(1).hide();
},function(){
$(this).parent().find("tr").eq(1).show();
} );
See HERE to see the result

Please try editing the table format like in demo
Demo here
All it does is find next .slide table and perform slideToggle
$(".clicke").click(function(){
$(this).next('tr').find('.slide').slideToggle("slow");
});

Try This, It will work.
$(document).ready(function(){
$(".clicke").click(function(){
$(this).nextAll("tr:eq(0), tr:eq(1)").slideToggle("slow");
});
});