I know you can add readonly="readonly" to an input field so its not editable. But I need to use javascript to target the id of the input and make it readonly as I do not have access to the form code (it's generated via marketing software)
I don't want to disable the input as the data should be collected on submit.
Here is the page I have added in the below suggestion with no luck so far:
https://www.pages05.net/engagedigital/inputReadOnly/test?spMailingID=6608614&spUserID=MTI5MDk4NjkzMTMS1&spJobID=Nzk4MTY3MDMS1&spReportId=Nzk4MTY3MDMS1
Make sure you use <body onload="onLoadBody();"> for anyone using this in the future.
You can get the input element and then set its readOnly property to true as follows:
document.getElementById('InputFieldID').readOnly = true;
Specifically, this is what you want:
<script type="text/javascript">
function onLoadBody() {
document.getElementById('control_EMAIL').readOnly = true;
}
</script>
Call this onLoadBody() function on body tag like:
<body onload="onLoadBody">
View Demo: jsfiddle.
The above answers did not work for me. The below does:
document.getElementById('input_field_id').setAttribute('readonly', true);
And to remove the readonly attribute:
document.getElementById('input_field_id').removeAttribute('readonly');
And for running when the page is loaded, it is worth referring to here.
document.getElementById('TextBoxID').readOnly = true; //to enable readonly
document.getElementById('TextBoxID').readOnly = false; //to disable readonly
document.getElementById("").readOnly = true
Try This :
document.getElementById(<element_ID>).readOnly=true;
<!DOCTYPE html>
<html>
<body>
<input id="balloons" type="number" step="10" min="1" max="1000" size="25" value="60" >
<input id="bloquear" type="checkbox" onclick="validate()" />
<p id="demo1"></p>
<p id="demo2"></p>
<script type=text/javascript>
function validate(){
document.getElementById("bloquear").checked == (bloquear.checked == 1 ? false : true );
document.getElementById("demo1").innerHTML = bloquear.checked;
document.getElementById("demo2").innerHTML = balloons.readOnly;
if (balloons.readOnly) document.getElementById("balloons").removeAttribute("readonly");
else balloons.setAttribute("readonly", "readonly");
}
</script>
</body>
</html>
Here you have example how to set the readonly attribute:
<form action="demo_form.asp">
Country: <input type="text" name="country" value="Norway" readonly><br>
<input type="submit" value="Submit">
</form>
I think you just have readonly="readonly"
<html><body><form><input type="password" placeholder="password" valid="123" readonly=" readonly"></input>
Related
How would you set the default value of a form <input> text field in JavaScript?
This is one way of doing it:
document.getElementById("nameofid").value = "My value";
I use setAttribute():
<input type="text" id="example"> // Setup text field
<script type="text/javascript">
document.getElementById("example").setAttribute('value','My default value');
</script>
if your form contains an input field like
<input type='text' id='id1' />
then you can write the code in javascript as given below to set its value as
document.getElementById('id1').value='text to be displayed' ;
2023 Answer
Instead of using document.getElementById() you can now use document.querySelector() for different cases
more info from another Stack Overflow answer:
querySelector lets you find elements with rules that can't be
expressed with getElementById and getElementsByClassName
EXAMPLE:
document.querySelector('input[name="myInput"]').value = 'Whatever you want!';
or
let myInput = document.querySelector('input[name="myInput"]');
myInput.value = 'Whatever you want!';
Test:
document.querySelector('input[name="myInput"]').value = 'Whatever you want!';
<input type="text" name="myInput" id="myInput" placeholder="Your text">
If you are using multiple forms, you can use:
<form name='myForm'>
<input type='text' name='name' value=''>
</form>
<script type="text/javascript">
document.forms['myForm']['name'].value = "New value";
</script>
Try out these.
document.getElementById("current").value = 12
// or
var current = document.getElementById("current");
current.value = 12
The answer is really simple
// Your HTML text field
<input type="text" name="name" id="txt">
//Your javascript
<script type="text/javascript">
document.getElementById("txt").value = "My default value";
</script>
Or if you want to avoid JavaScript entirely: You can define it just using HTML
<input type="text" name="name" id="txt" value="My default value">
<input id="a_name" type="text" />
Here is the solution using jQuery:
$(document).ready(function(){
$('#a_name').val('something');
});
Or, using JavaScript:
document.getElementById("a_name").value = "Something";
Happy coding :)
The simple answer is not in Javascript the simplest way to get the placeholder is through the place holder attribute
<input type="text" name="text_box_1" placeholder="My Default Value" />
document.getElementById("fieldId").value = "Value";
or
document.forms['formId']['fieldId'].value = "Value";
or
document.getElementById("fieldId").setAttribute('value','Value');
It's simple; An example is:
<input type="text" id="example"> // Setup text field
<script type="text/javascript">
var elem = document.getElementById("example"); // Get text field
elem.value = "My default value"; // Change field
</script>
If the field for whatever reason only has a name attribute and nothing else, you can try this:
document.getElementsByName("INPUTNAME")[0].value = "TEXT HERE";
<form>
<input type="number" id="inputid" value="2000" />
</form>
<script>
var form_value = document.getElementById("inputid").value;
</script>
You can also change the default value to a new value
<script>
document.getElementById("inputid").value = 4000;
</script>
This part you use in html
<input id="latitude" type="text" name="latitude"></p>
This is javaScript:
<script>
document.getElementById("latitude").value=25;
</script>
You can also try:
document.getElementById('theID').value = 'new value';
Direct access
If you use ID then you have direct access to input in JS global scope
myInput.value = 'default_value'
<input id="myInput">
The following code work perfectly well:
var $div = ('#js-div-hour input');
$div.attr('value','2022/01/10');
There is an element on my page with the id last_name. I would like to get its value and pass it along to my input tag.
I am essentially trying to do something like this (doesn't work).
<input type="hidden" name="lastName" value=document.getElementById("last_name").value>
Is there anyway to do this?
This is not only on load.
Essentially, I have a bunch of textboxes grouped together in a form.
Then I have another form with a button. When the user hits the button, I want my input tags' values be the current values entered in the textboxes.
EDIT: Thanks all! Got it work. I essentially had to remove the "value" attribute of the input tags and then add an "onclick" attribute to my button and then call those javascript codes you guys provided me.
for only loading page:
<!DOCTYPE html>
<html>
<head>
<!-- link here your JQuery library -->
<script>
$(function(){
$('#lastName').val($('#last_name').val());
});
</script>
</head>
<body>
<input type="text" id="last_name" value="123">
<input type="hidden" name="lastName" value="">
</body>
</html>
for button click:
<!DOCTYPE html>
<html>
<head>
<!-- link here your JQuery library -->
<script>
$(function(){
$('#btn-save').on('click', function() {
$('#lastName').val($('#last_name').val());
// other work
return false;
}
});
</script>
</head>
<body>
<input type="text" id="last_name" value="123">
<input type="hidden" name="lastName" value="">
<button id="btn-save">Save</button>
</body>
</html>
without jQuery use:
<script>
window.onload = function(){
var src = getElementById('last_name');
var dst = getElementById('lastName');
dst.value = stc.value;
}
</script>
Try this:
var lastName = document.getElementById("last_name");
var input = document.getElementById("yourInputId");
input.value = lastName.value;
Try the following code
HTML
<input type="hidden" name="lastName" id='hidLastName' />
and javascript code:
var input = document.getElementById("hidLastName")
input.value = document.getElementById("last_name").value
You should move the logic to a .js file or inside a <script></script> element. Preferrably the former. Try something like this:
Put an id to the receiving input:
<input type="hidden" id="lastName" name="lastName">
And this to your .js file
window.onload = function(){
var lastNameInput = document.getElementById('lastName');
var sourceInput = document.getElementById('last_name');
lastNameInput.value = sourceInput.value;
}
Try This:
Java Script
<script>
function setInput() {
document.getElementById("lastname").value = document.getElementById("last_name").value;
}
</script>
HTML
<input type="text" id="last_name" onblur="setInput()"/>
<input type="hidden" id="lastname" />
Let's say I have a variable called x in javascript. How can I set the value of a text input (HTML) to that variable? For example:
The value of the input will now be Swag
<input type="text" value="Swag" />
But if I want the value to be a javascript variable? How do I do? Something like this? (I am just guessing, trying to make my point clear)
<input type="text" value="variable.x" />
You can set it in your javascript code like:
<input id="myInput" type="text" value="Swag" />
<script>
var test = "test";
document.getElementById("myInput").value = test;
</script>
This is a better solution and will probably avoid confusion for newbies...
<!DOCTYPE html>
<html>
<body>
<h1>Input and Display Message</h1>
<p>Enter a message</p>
<input type="text" id="msg" ><br>
<button onclick="displayMessage()">Click me</button>
<p id="showinputhere"></p>
<script>
function displayMessage(){
let themsg = document.getElementById("msg").value;
if (themsg){
document.getElementById("showinputhere").innerHTML = themsg;
}
else{
document.getElementById("showinputhere").innerHTML = "No message set";
}
}
</script>
</body>
</html>
I have the following form from http://regain.sourceforge.net/:
<form name="search" action="search.jsp" method="get">
<p class="searchinput">
<b>Suchen nach: </b>
<input name="query" size="30"/>
<select name="order" size="1" ><option selected value="relevance_desc">Relevanz</option><option value="last-modified_asc">Dokumentendatum aufsteigend</option><option value="last-modified_desc">Dokumentendatum absteigend</option</select>
<input type="submit" value="Suchen"/>
</p>
</form>
the search form works fine. The URL looks like the following:
http://localhost:8080/regain/search.jsp?query=queryfieldvalue&order=relevance_desc
Now I want to add a checkbox to manipulate the value of the input field query.
If the checkbox is checked then the query value should look like filename:"queryfieldvalue"
http://localhost:8080/regain/search.jsp?query=filename%3A%22queryfieldvalue%22&order=relevance_desc
What's the best way to do this? Javascript? Do you have a short example for me because I'm really new to javascript.
Thanks a lot in advance.
one way with pure javascript (without jquery) would be
<script type="text/javascript">
function handler()
{
var check = document.getElementById('check');
var query = document.getElementsByName('query')[0];
if(check.checked)
{
query.value = "filename:\"" + query.value + "\"";
}
else
{
query.value = query.value.replace(/^filename:"/, "").replace(/"$/, "");
}
}
</script>
<form>
<input type="text" name="query" />
<input type="checkbox" id="check" onclick="handler()" />box
</form>
it should more or less work, it would be safer if you give query input field an id and then reference it by id, not name
if you use jQuery, something like this should do:
<input type="checkbox" id="chkQuery">Pass queryfield</input>
<script>
$(document).ready(function{}
$("#chkQuery").click(function(){
if ($(this).is(':checked'))
$("input[name='query']").val("filename:queryfieldvalue");
else
$("input[name='query']").val("queryfieldvalue");
});
});
</script>
What is the best method to clear text in a text field, when the user clicks on it?
I.e., if the text search field says "search" and when they click it, it clears the value.
You could do like:
<input type="text" onfocus="if(this.value == 'search') {this.value=''}" onblur="if(this.value == ''){this.value ='search'}">
<input name="foo" placeholder="Search" />
The placeholder tag is a new HTML5 tag that does exactly what you want to do here.
Normal HTML:
<script type="text/javascript">
function clearThis(target){
target.value= "";
}
</script>
<input type="text" value="Search" onfocus="clearThis(this)" />
jQuery:
<script type="text/javascript">
function clearThis(target){
$(target).val = "";
}
</script>
<input type="text" value="Search" onfocus="clearThis(this)" />
In JavaScript you can simple set the value of the contorol to an empty string in the OnFocus event handler.
If jquery's an option, I'd consider the watermark plugin
It achieves what you're after, but with a bit more style