Can anyone please help me through this....
I have two input fields in my form . One of which is hidden and I want to show it using a button. Now when i tried to show it using onClick() function its not responding...
can anyone give me code snippet to do so....
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
<script>
function show()
{
document.getElementById('passwd').style.display="block" ;
}
</script>
</head>
<body>
<form action="demo.html" >
<input type="text" name="user" />
<br />
<input type="text" id="passwd" name="password" style="display:none;" />
<input type="button" onClick="show()" name="show" value="show" />
<br />
<input type="submit" value="OK" />
</form>
</body>
</html>
plz help
This is because of your <input> declaration:
<input type="button" onClick="show()" name="show" value="show" />
When you call show() JavaScript will attempt to resolve the symbol show first; because you're calling show() from inlined code, the resolution takes place in document, which attempts to resolve the symbol based on the name or id attribute of your input box.
Solutions
Rename the button:
<input type="button" onClick="show()" name="showbutton" value="show" />
Rename the function:
function showPasswordInputBox()
{
// your code here
}
<input type="button" onClick="showPasswordInputBox()" name="show" value="show" />
Don't use in-line code:
function show()
{
// whatever
}
var showButton = document.getElementsByName('show')[0];
showButton.addEventListener('click', show, false);
See also
Don't give event handler the same name as a field!
Javascript Function and Form Name conflict
There is a problem with naming convention of show() function in javascript. Because just change the name to show1(). it'll work
function show1()
{
alert("ok");
}
<input type="button" name="show" value="show" onclick="show1()" />
you can use jquery and write following code: $("#passwd").show()
or you can use addClass('here_css_class') and css code .here_css_class{
display: block
}
try this
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
<script>
function show()
{
document.getElementById('passwd').style.display="block" ;
}
</script>
</head>
<body>
<form action="demo.html" >
<input type="text" name="user" />
<br />
<input type="text" id="passwd" name="password" style="display:none;" />
**<button onClick="show()" >Show</button>**
<br />
<input type="submit" value="OK" />
</form>
</body>
</html>
You need to use this:
onClick="javascript:show();"
or simply
onClick="show();"
Basically, just add the semi-colon :)
Related
There is a form with 2 inputs and a button that resets the inputs. When the button is clicked, how can I make first input unchanged (i.e it should not reset the value). How can I achieve it?
<!DOCTYPE html>
<html lang="en">
<head>
<title>Add-More example - fileuploader - Innostudio.de</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1"></script>
</head>
<body>
<div class="file-loading" style="margin: 50px;">
<form>
<input id="no_reset" type="text">
<input id="input-fa" type="text">
<button type="reset" onclick="removeReset()">
<i class="fas fa-sync"></i>submit
</button>
</form>
</div>
<script>
function removeReset() {
//it doesn't work
document.getElementById("no_reset").value = "dont reset";
}
</script>
</body>
</html>
If you have a lot of input, you can reset all fields except ones with a custom attribute.
Take a look at a sample vanilla js implementation :
function customReset()
{
var fieldsToReset = document.querySelectorAll("input:not([data-noreset='true'])")
for(var i=0;i<fieldsToReset.length;i++){
fieldsToReset[i].value = null;
}
}
<form id="myForm">
<input id="txt1" name="txt1" /> : should reset<br/>
<input id="txt2" name="txt2" /> : should reset<br/>
<input id="txt3" name="txt3" /> : should reset<br/>
<input id="txt4" name="txt4" data-noreset="true" /> : <strong>won't reset</strong><br/>
<button type="button" onclick="customReset()">
Reset
</button>
</form>
Pay attention to the type="button" attribute. This is required to neither reset the form nor submit it.
i got got confused when i run the static js and html below
i want to dynamicly add option by clicking button, but when i put it under the form , it will do acition post, unless i put it out of form ,it works. what's the reason? i didn't set type as "submit" for the add button, does any button clicked in form will cause form action?
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>作业管理</title>
</head>
<body>
<form enctype="multipart/form-data" method="POST" >
<div id="postform">
本次作业标题
<input type="text" name="title" />
<br>
<div class="postoption">
添加项目
<input type="text" name="option[]" />
音频文件
<input type="file" name="radio[]" />
答案
<input type="text" name="answer[]" />
</div>
</div>
<button id="add">添加输入项</button>
<input type="submit" value="提交" />
</form>
<script type="text/javascript">
window.onload = function(){
var add = document.getElementById("add");
add.onclick = function(){
addOption();
}
}
function addOption(){
var postForm = document.getElementById("postform");
var postoptions = document.getElementsByClassName("postoption");
var op = postoptions[0];
var optionClone = op.cloneNode(true);
postForm.appendChild(optionClone);
};
</script>
</body>
</html>
The <button> element is a submit button by default. You can change this with the type="button" attribute, which makes it do nothing by default, or calling preventDefault on the event. But I'd go with the attribute since then your intention is semantically clear without actually running the script.
I have this code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>The management panel</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<script type='text/javascript' src='http://code.jquery.com/jquery-1.7.1.min.js'></script>
<script type="text/javascript">
function markPercentages(){
var checked = $(':checked');
var percentage = Math.round((1 / checked.length) * 100);
checked.siblings('.percentage').html(percentage);
$('input[type=checkbox]').not(checked).siblings('.percentage').html('0');
}
</script>
</head>
<body>
<form>
Building<br /><div><input type="checkbox" onclick='markPercentages()' name="6" value="6"> Susilo 2A-13 (<span class='percentage'>0</span>%)</div><br />
<div><input type="checkbox" onclick='markPercentages()' name="7" value="7"> Susilo 2A-12 (<span class='percentage'>0</span>%)</div>
<br />Category<br /><select name="title"><option value="Wages">Wages</option><option value="Listrik">Listrik</option><option value="Iuran Bulanan">Iuran Bulanan</option></select><br />
On<br /><input type=text name=date id=date /><br />
Notes<br /><input type=text name=note /><br />
Value<br /><input type=text name=cost onChange="addDecimalPoints(this.id)" id=cost /><br />
<input type=submit value="Save" />
</form>
</body>
</html>
It shows a percentage right next to the building (Susilos) of the cost that it's adding. In simplest terms, if one is checked it shows 100%, if two are checked it shows 50% on the first and 50% on the second and so on.
It works fine in Chrome but in Firefox when I check just one, it shows 50% on that, like there are checked two. When I check two it shows 33% on those, like I checked three of them. Why this happen and how I should fix this?
Anyway , deleting a part of the code that's beyond that code makes that works also:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>The management panel</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<script type='text/javascript' src='http://code.jquery.com/jquery-1.7.1.min.js'></script>
<script type="text/javascript">
function markPercentages(){
var checked = $(':checked');
var percentage = Math.round((1 / checked.length) * 100);
checked.siblings('.percentage').html(percentage);
$('input[type=checkbox]').not(checked).siblings('.percentage').html('0');
}
</script>
</head>
<body>
<form>
Building<br /><div><input type="checkbox" onclick='markPercentages()' name="6" value="6"> Susilo 2A-13 (<span class='percentage'>0</span>%)</div><br />
<div><input type="checkbox" onclick='markPercentages()' name="7" value="7"> Susilo 2A-12 (<span class='percentage'>0</span>%)</div>
</form>
</body>
</html>
Thanks
http://jsfiddle.net/sjRAu/ - working all browsers
HTML:
<div>
<input type='checkbox' />Susilo 2A-13 (<span class='percentage'>0</span>%)
</div>
<div>
<input type='checkbox' />Susilo 2A-14 (<span class='percentage'>0</span>%)
</div>
<div>
<input type='checkbox' />Susilo 2A-15 (<span class='percentage'>0</span>%)
</div>
JS:
$(document).ready(function() {
$('input').click(function(){
markPercentages();
});
function markPercentages(){
var checked = $(':checked');
var percentage = Math.round((1 / checked.length) * 100);
checked.siblings('.percentage').html(percentage);
$('input[type=checkbox]').not(checked).siblings('.percentage').html('0');
}
});
If you have more inputs on the page just give your checkboxes a class like 'markbox' and change 'input' to '.markbox' in your JS
what about use like this one
$(function(){
$('input[type=checkbox').click(function(){
var checked = $('input[type=checkbox]').attr('checked');
var percentage = Math.round((1 / checked.length) * 100);
checked.siblings('.percentage').html(percentage);
$('input[type=checkbox]').not(checked).siblings('.percentage').html('0');
});
});
Try this code. I basically rewrote all of your logic:
<html>
<head>
<script type='text/javascript' src='http://code.jquery.com/jquery-1.7.1.min.js'></script>
<script type="text/javascript">
$(document).ready(function() {
$(':checkbox').change(function() {
var num_checked = $(':checkbox:checked').length;
if (num_checked == 0) {
$(':checkbox').each(function() {
$(this).siblings('.percentage:eq(0)').text('0');
});
return;
}
var percentage = Math.round(100 / num_checked);
$(':checkbox').each(function() {
if ($(this).is(':checked')) {
$(this).siblings('.percentage:eq(0)').text(percentage);
} else {
$(this).siblings('.percentage:eq(0)').text('0');
}
});
});
});
</script>
</head>
<body>
<div>
<input type='checkbox'/>Susilo 2A-13 (<span class='percentage'>0</span>%)
</div>
<div>
<input type='checkbox' />Susilo 2A-14 (<span class='percentage'>0</span>%)
</div>
<div>
<input type='checkbox' />Susilo 2A-15 (<span class='percentage'>0</span>%)
</div>
</body>
</html>
Demo: http://jsfiddle.net/NKuHS/3/
In the following code , I have a javascript function and I am tring to change the backgroundColor of the page to a color passed in as a parameter. But my code doesn't work, can anybody help me what is wrong in my code?
HTML:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Changing Color</title>
<head>
<style type="text/css">
body {
background-color:#ffcccc;
}
</style>
</head>
<body>
<form>
<label>color: <input type="text" name="color"> </label>
<input name="color" type = "button" onClick = "changecolor(color.value) " value = "color">
</form>
</body>
</html>
Javascript:
function changecolor(colour)
{
document.bgcolor=colour;
}
Assuming colour contains a valid CSS color descriptor, you can write:
document.body.style.backgroundColor = colour;
you have to put the function in a script block.
...
</form>
<script type="text/javascript>
//function declaration
</script>
Try this code it works finely man .i have just tried it.you can use it where-ever you want.also appended the code for onmouse click and onmouseover.
<html>
<head>
<script language="javaScript">
function change_background(color){
document.bgColor = color;
}
</script>
</head>
<body>
<form>
<label>color: <input type="text" name="color" >
</label>
<input name="clrs" type ="button" value="getcolor" onClick = "change_background(color.value) " >
</form>
ClickBlue
Mouseoverblack
Mouseover white
</body>
</html>`
Ok this is wheat I have so far. IF someone could help me out. I had to change the color of the background when you click on a button. And I also have to Use document.getElementById('yourelementid') to both find the value of the textarea and to change the basic text created in the div. But I don't know how to do that i have been researching online. I think i am getting a little confused about where to put things at in here thanks.
Here is what I have so far....
<!DOCTYPE html PUBLIC "-//W3C//DTD Xhtml 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http:www.w3.org/1999/xhtml">
<head>
<title>DOM</title>
<meta http-equiv="content-type" content="text/html;charset=iso-8859-1" />
<script language="JavaScript">
<!-- Begin
function newbg(thecolor)
{
document.bgColor=thecolor;
}
// End -->
</script>
<body>
<h3>DOM Assignment Examples</h3>
<div>
<form>
<h4>Change background color to:</h4>
<input type="radio" value="White" onclick="newbg('white');">white<br/>
<input type="radio" value="Blue" onclick="newbg('blue');">Blue<br />
<input type="radio" value="Beige" onclick="newbg('Beige');">Beige<br />
<input type="radio" value="Yellow" onclick="newbg('yellow');">Yellow<br />
</form>
</div>
<br />
<br />
<br />
<h4>add text to this box change the text below:</h4>
<TEXTAREA NAME="" ROWS="10" COLS="40" onBlur="blurHandlerRouting">
You will change this text
</TEXTAREA> <br />
<INPUT TYPE="button" NAME="button" Value="Click" onClick="testResults(this.form)">
</body>
</html>
The contents of a <textarea> can be manipulated using .html() in jQuery or .innerHTML in vanilla JavaScript.
Your HTML should contain the id="" attribute:
<textarea id="mytextarea">Text to be changed</textarea>
And the JavaScript:
document.getElementById('mytextarea').innerHTML = "New Text";
To change the background and the textarea you would try this:
function = testResults(){
document.getElementById("yourTextBoxId").style="background:red;"; //Change the background color to red.
document.getElementById("yourTextAreaId").value="your another text for the textarea"
}