I'm trying to use Javascript to set input fields to readonly, if they do not contain any value, i.e if they are null. this is my code, I'm not receiving any errors from the debugger, but it simply refuses to work, could someone
//checkScore();
function checkScore(){
document.getElementById('score_row1').readonly = true;
var scores = document.getElementsByClassName("score_holder");
var i;
for(i=0; i<scores.length; i++){
if(scores[i].value!=null){
scores[i].readonly="readonly";
}
}
}
<!doctype html>
<html>
<head>
</head>
<body onload="checkScore()">
<table align="center" cellpadding="3">
<tr valign="baseline">
<td colspan="3" align="center" id="course_row25" value="EDU-101"><strong>EDUCATION COURSES</strong></td>
</tr>
<tr>
<td align="right">
<input name="course_row1" type="text" id="course_row1" title="EDU-101: Historical Foundation of Education" value="EDU-101" size="5" readonly="readonly" />
</td>
<td> </td>
<td>
<input type="text" value="30" size="5" class="score_holder" />
</td>
</tr>
<tr>
<td align="right" id="course_row1" name="course_row1" value="EDU-101">
<input name="course_row1" type="text" id="course_row1" title="EDU-101: Historical Foundation of Education" value="EDU-101" size="5" readonly="readonly" />
</td>
<td> </td>
<td>
<input type="text" size="5" class="score_holder" />
</td>
</tr>
<tr>
<td align="right" id="course_row1" name="course_row1" value="EDU-101">
<input name="course_row1" type="text" id="course_row1" title="EDU-101: Historical Foundation of Education" value="EDU-101" size="5" readonly="readonly" />
</td>
<td> </td>
<td>
<input type="text" value="10" size="5" class="score_holder" />
</td>
</tr>
</table>
</body>
</html>
First, there is no element with the id score_row1 in your HTML, so your js will throw an error and fail.
Also the property is readOnly and not readonly
So this scores[i].readonly="readonly"; should be scores[i].readOnly="readonly";
Created a working demo here
The value of a text input will always be a string.
If nothing has been typed in it, then the value will be "". It will never be null.
Related
In my program I am trying to auto calculate total price when user enter quantity in input box. For that I performed below script. but due to some error my script doesn't working as per expectation and when I enter quantity, total price doesn't get updated. Can anyone tell me what's wrong in my code. I want to perform this script without jquery.
code:
<!DOCTYPE html>
<html>
<head>
<title>form</title>
</head>
<body>
<form action="" method="POST" name="myForm" id="myForm">
<table bgcolor="pink" align="center" border="2px">
<tbody>
<tr>
<th> Category </th>
<th> Description </th>
<th> Unit Price </th>
<th> Quantity </th>
<th> Total Price</th>
</tr>
<tr>
<td rowspan="2">1</td>
<td> Paneer </td>
<td name="priceQ1"> $10 </td>
<td> <input type="text" size="4" id="q1" name="qty1" onkeyup="calculate()"> </td>
<td> <input type="text" id="total1" name="total1"> </td>
</tr>
<tr>
<td> Rice </td>
<td name="priceQ2"> $30 </td>
<td> <input type="text" size="4" id="q2" name="qty2" onkeyup="calculate()"> </td>
<td> <input type="text" id="total2" name="total2"> </td>
</tr>
<tr align="right">
<td colspan="4"> Subtotal $ </td>
<td> <input type="text" id="sub_total" name="sub_total"> </td>
</tr>
<tr>
<td rowspan="2">2</td>
<td> Chicken Palak </td>
<td name="priceQ3"> $20 </td>
<td> <input type="text" size="4" id="q3" name="qty3" onkeyup="calculate()"> </td>
<td> <input type="text" id="total3" name="total3"> </td>
</tr>
<tr>
<td> Aloo Tikki </td>
<td name="priceQ4 "> $14 </td>
<td> <input type="text" size="4" id="q4" name="qty4" onkeyup="calculate()"> </td>
<td> <input type="text" id="total4" name="total4"> </td>
</tr>
<tr align="right">
<td colspan="4"> Subtotal $ </td>
<td> <input type="text" id="sub_total2" name="sub_total2"> </td>
</tr>
</tbody>
</table>
<p align="center">
<input type="submit" value="Submit">
<input type="reset">
</p>
</form>
<script>
function calculate() {
var f = document.forms['myForm'];
for(var i=0;i<4;i++){
var qty = document.getElementByName('qty'+i);
document.getElementById('total'+i).value = newValue;
}
}
</script>
</body>
</html>
There is no document.getElementsById, you should name your different quantities and total price fields with distinct names and traverse thru them using document.getElementById('qty'+i);
Can I please ask for assistance, im new to html and css i barely know this things though im trying to learn, here's what i made so far but i cant seem to get the copy button fixed .. can someone help me out please
im trying to create a template, im sorry im really trying hard to learn but im clueless..
<form id="tickettemplate" name="tickettemplate">
<table width="700">
<tbody>
<tr>
<td colspan="4" align="center">
<div align="center">
<p style="font-size: 14pt;" align="center">
<strong>Shin's Template</strong>
</p>
</div>
</td>
</tr>
</tbody>
</table>
<table style="font-size: 12pt; height: 164px;" width="697">
<tbody>
<tr>
<td valign="middle">
D/SESA
</td>
<td>
<input id="callername_singleuser" name=
"callername_singleuser" size="50" type="text" />
</td>
</tr>
<tr>
<td valign="middle">
Caller’s name:
</td>
<td>
<input id="Email" name="Email" size="50" type="text" />
</td>
</tr>
<tr>
<td valign="middle">
Callback number:
</td>
<td>
<input id="WinId_singleuser0" name="WinId_singleuser0"
size="50" type="text" />
</td>
</tr>
<tr>
<td valign="top">
E-mail address:
</td>
<td>
<input id="ctystate0" name="E-mail Address" size="50"
type="text" />
</td>
</tr>
<tr>
<td valign="middle">
Related case#s (history):
</td>
<td>
<input id="phonenumber_singleuser" name=
"phonenumber_singleuser" size="50" type="text" />
</td>
</tr>
<tr>
<td valign="top">
Location,remote/hotel/office:
</td>
<td>
<input id="client1" name="client1" size="50" type=
"text" />
</td>
</tr>
</tbody>
</table><br />
<div>
<br />
<table style=
"font-size: 12pt; border: 0px solid gray; height: 44px;" width=
"758" cellspacing="0" cellpadding="0">
<tbody>
<tr>
<td valign="middle">
Application name:
</td>
<td>
<input id="WinId_singleuser0" name="WinId_singleuser0"
size="50" type="text" />
</td>
</tr>
<tr>
<td valign="top">
Number of Users Affected:
</td>
<td>
<select id="Number of Users Affected:0" name=
"Number of Users Affected:" size="1">
<option value="Single User">
Single User
</option>
<option value="Less than 5 users">
Less than 5 users
</option>
<option value="5 or more users">
5 or more users
</option>
</select>
</td>
</tr>
</tbody>
</table><br />
<table style="font-size: 12pt; height: 255px;" width="604">
<tbody>
<tr>
<td valign="middle">
What is the problem:
</td>
<td>
<p>
<input id="callername_singleuser" name=
"callername_singleuser" size="50" type="text" />
</p>
</td>
</tr>
<tr>
<td valign="middle">
When did the issue/problem begin:
</td>
<td>
<input id="Email" name="Email" size="50" type="text" />
</td>
</tr>
<tr>
<td valign="middle">
Logon id: :
</td>
<td>
<input id="WinId_singleuser0" name="WinId_singleuser0"
size="50" type="text" />
</td>
</tr>
<tr>
<td valign="top">
Error message (if any):
</td>
<td>
<input id="ctystate0" name="Error message (if any):"
size="50" type="text" />
</td>
</tr>
<tr>
<td valign="middle">
When was the last time it worked properly:
</td>
<td>
<input id="phonenumber_singleuser" name=
"phonenumber_singleuser" size="50" type="text" />
</td>
</tr>
<tr>
<td valign="top">
Have there been any changes to your PC since the last
time it worked properly:
</td>
<td>
<input id="client1" name="client1" size="50" type=
"text" />
</td>
</tr>
<tr>
<td valign="middle">
Have you changed your password recently:
</td>
<td>
<input id="callername_singleuser" name=
"callername_singleuser" size="50" type="text" />
</td>
</tr>
</tbody>
</table><br />
<table style="font-size: 12pt;">
<tbody>
<tr>
<td valign="middle">
Trouble shooting steps (Detailed):
<textarea cols="50" rows="2">
</textarea>
</td>
</tr>
<tr>
<td valign="middle">
Additional Detail (links, screenshots etc...):
<textarea cols="50" rows="2">
</textarea>
</td>
</tr>
</tbody>
</table>
<div>
<br />
<table style=
"font-size: 12pt; border: 1px solid gray; height: 92px;"
width="612" cellspacing="0" cellpadding="0">
<tbody>
<tr>
<td valign="top">
Problem:
</td>
<td>
<input id="client1" name="client1" size="50" type=
"text" />
</td>
</tr>
<tr>
<td valign="top">
Cause:
</td>
<td>
<input id="client1" name="client1" size="50" type=
"text" />
</td>
</tr>
<tr>
<td valign="top">
Action:
</td>
<td>
<input id="client1" name="client1" size="50" type=
"text" />
</td>
</tr>
<tr>
<td valign="top">
Resolution:
</td>
<td>
<input id="client1" name="client1" size="50" type=
"text" />
</td>
</tr>
<tr>
<td align="right" width="150">
<input name="Reset" type="reset" value=
"Clear Template" />
</td>
<td align="right" width="450">
<input name="copyform" type="button" value=
"Copy" />
</td>
</tr>
</tbody>
</table>
</div>
</div>
</form>
Here is a solution that uses a few lines of JS.
HTML
<p id="p1">Text</p>
<button onclick="copyToClipboard('#p1')">Copy TEXT</button>
JS
function copyToClipboard(element) {
var $temp = $("<input>");
$("body").append($temp);
$temp.val($(element).text()).select();
document.execCommand("copy");
$temp.remove();
}
I am trying to create a table that when a user click update, it will get the first and second input value. I am trying to use prev to find the first two DOM element and get the value, but fail, what should I do? Any help is appreciated.
$('.update_button').on("click",function(){
var update_val_1 = $(this).prev().find('input:first').val();
var update_val_2 = $(this).prev().find('input:nth-child(2)').val();
alert(update_val_1);
alert(update_val_2);
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<tr class="gridtable">
<td><input type="text" value="apple" /></td>
<td><input type="text" value="one" /></td>
<td><button type="button" class="update_button">UPDATE</button></td>
</tr>
<tr class="gridtable">
<td><input type="text" value="banana" /></td>
<td><input type="text" value="three" /></td>
<td><button type="button" class="update_button">UPDATE</button></td>
</tr>
<tr class="gridtable">
<td><input type="text" value="berry" /></td>
<td><input type="text" value="ten" /></td>
<td><button type="button" class="update_button">UPDATE</button></td>
</tr>
The problem is that prev looks for sibling nodes. Your input elements are in different td's so they aren't siblings. Instead, you need to go to the parent row then grab the inputs from there.
Explicit example:
$('.update_button').on("click", function() {
var $parentRow = $(this).closest('.gridtable');
var $firstCell = $parentRow.find('td:first-child');
var $secondCell = $parentRow.find('td:nth-child(2)');
var $firstInput = $firstCell.find('input');
var $secondInput = $secondCell.find('input');
var update_val_1 = $firstInput.val();
var update_val_2 = $secondInput.val();
console.log(update_val_1);
console.log(update_val_2);
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table>
<tr class="gridtable">
<td>
<input type="text" value="apple" />
</td>
<td>
<input type="text" value="one" />
</td>
<td>
<button type="button" class="update_button">UPDATE</button>
</td>
</tr>
<tr class="gridtable">
<td>
<input type="text" value="banana" />
</td>
<td>
<input type="text" value="three" />
</td>
<td>
<button type="button" class="update_button">UPDATE</button>
</td>
</tr>
<tr class="gridtable">
<td>
<input type="text" value="berry" />
</td>
<td>
<input type="text" value="ten" />
</td>
<td>
<button type="button" class="update_button">UPDATE</button>
</td>
</tr>
</table>
Simplified example:
$('.update_button').on("click", function() {
var $parentRow = $(this).closest('.gridtable');
var update_val_1 = $parentRow.find('td:first-child input').val();
var update_val_2 = $parentRow.find('td:nth-child(2) input').val();
console.log(update_val_1);
console.log(update_val_2);
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table>
<tr class="gridtable">
<td>
<input type="text" value="apple" />
</td>
<td>
<input type="text" value="one" />
</td>
<td>
<button type="button" class="update_button">UPDATE</button>
</td>
</tr>
<tr class="gridtable">
<td>
<input type="text" value="banana" />
</td>
<td>
<input type="text" value="three" />
</td>
<td>
<button type="button" class="update_button">UPDATE</button>
</td>
</tr>
<tr class="gridtable">
<td>
<input type="text" value="berry" />
</td>
<td>
<input type="text" value="ten" />
</td>
<td>
<button type="button" class="update_button">UPDATE</button>
</td>
</tr>
</table>
I'm a big fan of the .closest(selector) and .find('selector') methods.
The first one goes up the dom until it finds the first match of the given selector.
The second one goes down the dom and finds all matches.
.eq(index) is like array[index] for jQuery. It takes a collection of jQuery elements and returns the one at the given index.
$('.update_button').on("click",function(){
var inputs = $(this).closest('.gridtable').find('input');
var value1 = inputs.eq(0).val();
var value2 = inputs.eq(1).val();
});
I am new to javascript and am making a basic HTML timesheet form. I am simply trying to add the various hour types (Regular, overtime, sick, etc.) together and put that calculated value into a "Total hours" text box. Here is my function that I attempted (I am only using the 1 text box for now but would like advice on how to incorporate the others):
<script>
function findTotal(hours, tot) {
var hours = document.getElementsbyID('hours1').value;
var tot = 0;
for (var i = 0; i < hours.length; i++) {
if (parseInt(hours[i].value))
tot += parseInt(hours[i].value);
}
document.getElementById('total').value = tot;
}
</script>
Here is the corresponding HTML form section:
<b>HOURS</b>
<table width="25%" border="1" cellpadding="0" cellspacing="0" style="background-color: #ffffff;">
<tr valign="Top">
<td style="border-width : 0px;">
<br /><b>Regular</b>
</td>
<td style="border-width : 0px;">
<br />
<input type="text" onblur="findTotal(hours)" id="hours1" size="5">
</td>
</tr>
<tr valign="top">
<td style="border-width : 0px;">
<br /><b>Overtime</b>
</td>
<td style="border-width : 0px;">
<br />
<input type="text" onblur="findTotal()" id="hours2" size="5">
</td>
</tr>
<tr valign="top">
<td style="border-width : 0px;">
<br /><b>Sick</b>
</td>
<td style="border-width : 0px;">
<br />
<input type="text" onblur="findTotal()" id="hours3" size="5">
</td>
</tr>
<tr valign="top">
<td style="border-width : 0px;">
<br /><b>Holiday</b>
</td>
<td style="border-width : 0px;">
<br />
<input type="text" onblur="findTotal()" id="hours4" size="5">
</td>
</tr>
<tr valign="top">
<td style="border-width : 0px;">
<br /><b>Vacation</b>
</td>
<td style="border-width : 0px;">
<br />
<input type="text" onblur="findTotal()" id="hours5" size="5">
</td>
</tr>
<tr valign="top">
<td style="border-width : 0px;">
<br /><b>Leave</b>
</td>
<td style="border-width : 0px;">
<br />
<input type="text" onblur="findTotal()" id="hours6" size="5">
</td>
</tr>
<tr valign="top">
<td style="border-width : 0px;">
<br /><b>Jury Duty</b>
</td>
<td style="border-width : 0px;">
<br />
<input type="text" onblur="findTotal()" id="hours7" size="5">
</td>
</tr>
<tr valign="top">
<td style="border-width : 0px;">
<br /><b>TOTAL HOURS</b>
</td>
<td style="border-width : 0px;">
<br />
<input type="text" onblur="findTotal()" size="5" id="total">
</td>
</tr>
</table>
Thank you in advance for your help!
-Matt
If you do the same things many times, think about how you could do it generically with CSS (selector) or JavaScript (loop).
Cleaned up HTML:
<b>HOURS</b>
<table id="myTable" width="25%">
<tr valign="top">
<td>Regular</td>
<td>
<input type="text" size="5" />
</td>
</tr>
<tr valign="top">
<td>Overtime</td>
<td>
<input type="text" size="5" />
</td>
</tr>
<tr valign="top">
<td>Sick</td>
<td>
<input type="text" size="5" />
</td>
</tr>
<tr valign="top">
<td>Holiday</td>
<td>
<input type="text" id="hours4" size="5" />
</td>
</tr>
<tr valign="top">
<td>Vacation
</td>
<td>
<input type="text" size="5" />
</td>
</tr>
<tr valign="top">
<td>Leave</td>
<td>
<input type="text" size="5" />
</td>
</tr>
<tr valign="top">
<td>Jury Duty</td>
<td>
<input type="text" size="5" />
</td>
</tr>
<tr valign="top">
<td>TOTAL HOURS</td>
<td>
<input type="text" size="5" id="total" />
</td>
</tr>
</table>
It is good pratice to separate JavaScript and HTML.
If you work with HTML and JavaScript, it's good to understand how you could access, e.g here the table, without class (getElementsByClassName) and without id (getElementById).
Go through the table rows in the table. Therefore there are rows and cells:
var table = document.getElementById("myTable");
var rows = table.rows;
var rowsLength = rows.length // the number of all rows in the table
Example first row first cell:
var firstRowFirstCell = rows[0].cells[0];
Here, we go through the rows without the last row (total) rowsLength - 1. The input is in the second cell. Therefore we need document.getElementsByTagName
var input = rows[i].cells[1].getElementsByTagName("input");
to add addEventListener:
input[0].addEventListener("blur", function() { ... });
for every input except total (the last one). Assign
function totalHours(containerID) {
var table = document.getElementById(containerID);
var rows = table.rows;
var rowsLength = rows.length;
var total = 0;
for(var i = 0; i < (rowsLength - 1); i += 1) { // not the TOTAL input!
var input = rows[i].cells[1].getElementsByTagName("input");
if(input[0].value !== "") { // no empty inputs
total += parseInt(input[0].value);
}
}
return total;
}
to them.
Full example
Javascript rookie here. I have a small page with a first name/last name and a lookup/clear button. The page then has 15 textboxes below.
I would like for the user to be able to search for the first and last name, and fill up the next empty textbox.
Currently the user can search for a person, and fill the first textbox, but if they search again....it will just replace what is in the first textbox. Here is my relevant code:
<form name="isForm" action="">
<table width="75%" border="0" cellspacing="0">
<tr>
<td colspan="4" class="columnHeaderClass">Search for ID by Name</td>
</tr>
<tr>
<td>Last Name:
<input type="hidden" id=queryType name=queryType value="P" />
<input type="text" size="20" autocomplete="off" id="searchField" name="searchField" />
</td>
<td>First Name:
<input type="text" size="20" autocomplete="off" id="firstField" name="firstField" />
</td>
<td align="center" valign="bottom">
<input id="submit_btn" type="button" value="Lookup/Clear" class="buttonStyle"
onclick="initFieldsDivs(document.isForm.searchField, document.isForm.nameField, document.isForm.idField, document.isForm.firstField);
document.getElementById('nameField').innerHTML='';
this.disabled = true;
doCompletion();" >
</td>
<td><div id="nameField"></div></td>
</tr>
<tr>
<td colspan="4">
<table id="completeTable" border="1" bordercolor="black" cellpadding="0" cellspacing="0">
</table>
</td>
</tr>
<td colspan="3"> </td>
</tr>
</table>
<table width="75%" border="0" cellspacing="0">
<tr>
<td colspan="3" class="columnHeaderClass">ID(s)</td>
</tr>
<tr>
<td colspan="3"> </td>
</tr>
<tr>
<td align="right"><input name="Student_ID" type="text" id="idField" /></td>
<td align="center"><input name="Student_ID1" type="text" id="idField1" /></td>
<td align="left"><input name="Student_ID2" type="text" id="idField2" /></td>
</tr>
<tr>
<td align="right"><input name="Student_ID3" type="text" id="idField3" /></td>
<td align="center"><input name="Student_ID4" type="text" id="idField4" /></td>
<td align="left"><input name="Student_ID5" type="text" id="idField5" /></td>
</tr>
<tr>
<td align="right"><input name="Student_ID6" type="text" id="idField6" /></td>
<td align="center"><input name="Student_ID7" type="text" id="idField7" /></td>
<td align="left"><input name="Student_ID8" type="text" id="idField8" /></td>
</tr>
<tr>
<td align="right"><input name="Student_ID9" type="text" id="idField9" /></td>
<td align="center"><input name="Student_ID10" type="text" id="idField10" /></td>
<td align="left"><input name="Student_ID11" type="text" id="idField11" /></td>
</tr>
<tr>
<td align="right"><input name="Student_ID12" type="text" id="idField12" /></td>
<td align="center"><input name="Student_ID13" type="text" id="idField13" /></td>
<td align="left"><input name="Student_ID14" type="text" id="idField14" /></td>
</tr>
<tr>
<td colspan="3">
<div class="submit">
<input type="submit" name="SUBMIT" value="SUBMIT" accesskey="S">
</div>
</td>
</tr>
</table>
So the small amount of javascript that is written.... initFieldDivs() grabs the id of whoever was chosen and puts it into the first textbox (I would like to solve this without changing this function). So, is there anyway to move on to the next textbox when the first is full? thanks in advance, and please ask if you have questions, I know this is confusing.
I think you want something like
function fillNextEmptyTb() {
var allInputs = document.getElementsByTagName("input");
for (var i = 0; i < allInputs.length; i++)
if (allInputs[i].type === "text" && allInputs[i].value == "") {
allInputs[i].value = "whatever you want";
return;
}
}
Or the jQuery way, if you're using it, or plan to try it:
var nextEmpty = $('input:text[value=""]')[0];
$(nextEmpty).val("whatever you want");