Suppose I have an input person name and another input business name:
<input name="nameofperson" id="nameofperson" class="form-control">
<input name="nameofbusiness" id="nameofbusiness" class="form-control" value="1234567">
If I started writing something on the nameofperson input. I want to clear the value of nameofbusiness, how to do that using CSS?
What you want to do is not possible through the Css,but you can do that using javascript or jquery.
With Javascript :
var nameofperson = document.getElementById('nameofperson');
var nameofbusiness = document.getElementById('nameofbusiness');
nameofperson.oninput = function() {
nameofbusiness.value = '';
}
<input type="text" name="nameofperson" id="nameofperson" class="form-control">
<input type="text" name="nameofbusiness" id="nameofbusiness" class="form-control" value="1234567">
With Jquery :
$(document).ready(function(){
$('#nameofperson').keyup(function(){
$('#nameofbusiness').val('');
})
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<input type="text" name="nameofperson" id="nameofperson" class="form-control">
<input type="text" name="nameofbusiness" id="nameofbusiness" class="form-control" value="1234567">
You can't clear an input field's value using CSS. However, you can use JavaScript/JQuery for that.
Please find the working example.
$("#person").on("keyup", function(){
$("#business").val("");
});
input {
width: 350px;
height: 30px;
text-indent: 5;
margin-bottom: 10px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="text" id="person" placeholder="Enter name of person">
<input type="text" id="business" placeholder="Enter your Business">
You add same class name for both input. For exampale I add 'nameofSomething' class.
and the jquery
$(".nameofSomething").keypress(function () {
var id = $(this).attr('id')
var text = $("#" + id).val();
$(".nameofSomething").val('');
$("#" + id).val(text);
});
You can change keypress to change, blur...or whatever you want.
This is basically done by javascript and not by css.
CSS as the name says is for styling purpose.
you can do this by javascript easily using onfocus method:
<input type="text" onfocus="document.getElementById('nameofbusiness').value = ''">
Related
I have a (unchangable) form structure like this:
<div class="form-group">
<div class="col-sm-3 control-label">
<label for="frm-registrationForm-form-surname">Surname:</label>
</div>
<div class="col-sm-9">
<input class="form-control text" id="registration-form-surname" type="text" name="surname" required>
</div>
</div>
Is there possible to add the asterisk * sign next to all the labels relying to the inputs with "required" attribute using the CSS? I did not find any option to link the input with the label in CSS even in the same form group.
Thanks.
Using jQuery.
First solution. If .form-group has only one input and label elements.
$(document).ready(function () {
$('input[required]').parents('.form-group').find('label').append('*');
});
Second solution. Working only of your label for and input id attributes the same
$(document).ready(function () {
$("input[required]").each(function(index) {
var id = $(this).attr('id');
$('label[for="'+id+'"]').append('*');
});
});
I would recommend you to use the second solution.
You can use jQuery to implement this functionality. Inside document.ready function,
var str ='*';
$(".control-label").append(str);
Entire script would be
$(document).ready(function () {
var str ='*';
$(".control-label").append(str);
});
I want to find the default tab index of the form.
I have not given but still all the control has the tab index. I want to find that default tab index through the j query. How can i find that?
Jquery and tab-index
The way tabindexing works is that it goes trough your html markup and looks for tabable elements.
So say you have this code:
<form>
<label>Name:</label>
<input type="text" />
<br>
<input type="submit" />
</form>
The text input will be tabbed first, and then the submit input.
Yes i know this how do it get the tabbing?
$(function() {
$firstinput = $("form").find("input")
console.log($firstinput.first()); //prints the first element thats an input.
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form>
<label>Name:</label>
<input type="text" />
<br>
<input type="submit" />
</form>
The code above will only work if you only have input elemtns and add not trickery to the markup like hiding your elements etc.
In the code below im using the jquery UI :focusable selector.
With this you should get the first tabbable element in your form
//:focus selector from jquery UI
$.extend($.expr[':'], {
focusable: function(element) {
var nodeName = element.nodeName.toLowerCase(),
tabIndex = $.attr(element, 'tabindex');
return (/input|select|textarea|button|object/.test(nodeName) ? !element.disabled : 'a' == nodeName || 'area' == nodeName ? element.href || !isNaN(tabIndex) : !isNaN(tabIndex))
// the element and all of its ancestors must be visible
// the browser may report that the area is hidden
&& !$(element)['area' == nodeName ? 'parents' : 'closest'](':hidden').length;
}
});
//actual code
$(function() {
$form = $("form");
$first = $form.find(":focusable").first();
console.log($first);
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form>
<label tab-index="0">Name:</label>
<input type="text" />
<br>
<input type="submit" />
</form>
You can search for 'tabindex' attribute with jquery.
var tabindexVal = $('selector').attr('tabindex');
I want to create a small count button but don't know how to make it in JavaScript...
Here's the code :
HTML
<div id="input_div">
<input type="text" size="25" value="0" id="count">
<input type="button" value="-" id="moins">
<input type="button" value="+" id="plus">
</div>
It must increase AND decrease the number in the input[type=text] when click on the -/+ button.
Can someone help me ?
You'd need two things.
Variables - which are the way to store information in JavaScript
Event handlers, which are the way to react to events in JavaScript
First, let's create a script tag, and put a JavaScript count variable in it, we'll put it in the bottom of our body tag:
<script>
var count = 0;
</script>
Now, we want to create a handler, that is something that executes whenever the plus and minus signs are clicked
<script>
var count = 0;
function plus(){
count++;
}
function minus(){
count--;
}
</script>
We've created two functions to call when the buttons are clicked, but we do not update the value in the HTML, or call them yet, let's update the value in the HTML.
We'll do so by document.getElementByID for the element to update and then change its value. Our script tag should look something liks this:
<script>
var count = 0;
var countEl = document.getElementById("count");
function plus(){
count++;
countEl.value = count;
}
function minus(){
count--;
countEl.value = count;
}
</script>
One last thing, we need to tell the elements in the DOM to execute those handlers.
<div id="input_div">
<input type="text" size="25" value="0" id="count">
<input type="button" value="-" id="moins" onclick="minus()">
<input type="button" value="+" id="plus" onclick="plus()">
</div>
We've added them as event handlers to the DOM reacting to a click on the buttons, completing the task.
Now, here are some things we can improve:
We can use addEventListener to avoid polluting our DOM, and create unobtrusive JavaScript.
We can use a more advanced tool like KnockoutJS to handle binding the value we have to the DOM element instead of updating it ourselves.
We can read Eloquent JavaScript and learn more about how the language works!
Good luck, happy JavaScripting, and happy learning :)
DEMO FIDDLE FOR JAVASCRIPT
code html -
<div id="input_div">
<input type="text" size="25" value="0" id="count" />
<input type="button" value="-" id="minus" onClick = "doMinus();" />
<input type="button" value="+" id="plus" onClick = "doPlus();" />
</div>
code javaScript -
function doMinus(){
document.getElementById("count").value = --document.getElementById("count").value;
}
function doPlus(){
document.getElementById("count").value = ++document.getElementById("count").value;
}
jQuery Version
DEMO FIDDLE FOR JQUERY
code html -
<div id="input_div">
<input type="text" size="25" value="0" id="count" />
<input type="button" value="-" id="minus" />
<input type="button" value="+" id="plus" />
</div>
code jQuery -
$('#minus').click(function(){
$("#count").val(parseInt($("#count").val())-1);
});
$('#plus').click(function(){
$("#count").val(parseInt($("#count").val())+1);
});
U can write some script as shown
<script>
function increase(){
var a = 1;
var textBox = document.getElementById("count");
textBox.value = a;
a++;
}
</script>
<body>
<button type="button" onclick="increase()">+</button>
<input type="text" id="text">
</body>
similarly u can do it for - decrease button
in this case, I use input type range that display a slider :
<input type="range" id="myInputRange" value="15" min="0" max="50" step="1" onchange="document.getElementById('output').textContent=value" ><span id="output">15</span>
(instead of input type number that is not supported by IE)
This seems pretty simple.
(function() {
var count = 0;
var minusButton = document.getElementById("moins");
var plusButton = document.getElementById("plus");
var countBox = document.getElementById("count");
minusButton.onclick = function(e) {
countBox.value = --count;
};
plusButton.onclick = function(e) {
countBox.value = ++count;
};
})();
Can I change an input field value using CSS when user clicks it?
Like:
<input type=text name=username>
<input type=password name=password>
So, when the user click into this field, the text will go away and he will be able to write something.
I have tried:
input[value="Input desired username here"] {
styles...
}
Any clues?
There's no need to use css for this. You can use placeholder attribute for your input tag, it will show a default value in input boxes:
<input type="text" name="username" placeholder="Username" />
Please consider that placeholder attribute is not supported in all browsers and if you want to make it cross-browser you can write a javascript code to put a default value in your input-boxes or use this simple and quick fix:
<input type="text" name="username" onFocus="if(this.value=='Username') this.value='';" onBlur="if(this.value=='') this.value='Username';" value="Username" />
This is called a placeholder. Modern browsers will allow you to use a placeholder attribute like this:
<input type="text" name="username" placeholder="Input desired username here" />
and it will appear as you would like. Then you will need to utilize Modernizr to back port that functionality to older browsers. Something like this JavaScript will help:
$(document).ready(function () {
if(!Modernizr.input.placeholder) {
$('[placeholder]').focus(function () {
var input = $(this);
if (input.val() == input.attr('placeholder')) {
input.val('');
input.removeClass('placeholder');
}
}).blur(function () {
var input = $(this);
if (input.val() == '' || input.val() == input.attr('placeholder')) {
input.addClass('placeholder');
input.val(input.attr('placeholder'));
}).blur();
$('[placeholder]').parents('form').submit(function () {
$(this).find('[placeholder]').each(function () {
var input = $(this);
if (input.val() == input.attr('placeholder')) {
input.val('');
}
})
});
}
})
I am starter with Play Framework. I got a problem when i passed parameters.
I want to pass a collection from view to controller. And i do not know how to do this. I always get "null" when i get a collection from view.
My code below:
Code in controller:
public static void create(List<Book> books) throws Exception {
for(Book book : books){
System.out.println(book.get(0).author) // i got null :(
}
}
Code in HTML
Book 1:
<input type="text" name="books.author" />
<input type="text" name="books.title" />
Book 2:
<input type="text" name="books.author" />
<input type="text" name="books.title" />
When i submit, i want to add 2 records into database include Book1 and Book2. Please support me
Thanks
You can make this work by simplying add the array indicator to your HTML code
Book 1:
<input type="text" name="books[0].author" />
<input type="text" name="books[0].title" />
Book 2:
<input type="text" name="books[1].author" />
<input type="text" name="books[1].title" />
I have tested this solution, and it works fine.
Also note that your println will not compile, as you are calling get(0) on the Book object, and not the List object. If you just println book.author, it outputs the author as required.
In case anyone needs an example of the Javascript for dyanmically adding and removing books (JQUERY needed):
<script type="text/javascript">
$(document).ready(function() {
var bookCount=0;
$('#btnAddBook').click(function() {
bookCount++;
//newElem = go up a to the parent div then grab the previous container
var newElem = $(this).parent().prev().clone().attr('id', 'book[' + bookCount + ']');
//for each input inside the div, change the index to the latest bookCount
$(newElem).find("input").each(function(){
var name = $(this).attr('name');
var leftBracket = name.indexOf("[");
var rightBracket = name.indexOf("]");
var beforeBracketString = name.substring(0,leftBracket+1);//+1 to include the bracket
var afterBracketString = name.substring(rightBracket);
$(this).attr('name', beforeBracketString + bookCount + afterBracketString);
});
//insert it at the end of the books
$(this).parent().prev().after(newElem);
$(newElem).find("input").each(function(){
$(this).attr('id', $(this).attr('id') + bookCount);
});
//enable the remove button
$('#btnRemovebook').removeAttr('disabled');
//If we are at 16 divs, disable the add button
if (bookCount == 15)
$(this).attr('disabled','disabled');
});
$('#btnRemoveBook').click(function() {
bookCount--;
//remove the last book div
$(this).parent().prev().remove();
//in case add was disabled, enable it
$('#btnAddbook').removeAttr('disabled');
//never let them remove the last book div
if (bookCount == 0)
$(this).attr('disabled','disabled');
});
});
</script>
<!-- HTML Snippet -->
<div id="book[0]">
<label> Book: </label>
<input type="text" name="books[0].author" value="Author" />
<input type="text" name="books[0].title" value="Title" />
</div>
<div>
<input type="button" id="btnAddbook" value="Add another book" />
<input type="button" id="btnRemovebook" value="Remove last book" disabled="disabled" />
</div>
<!-- REST of the HTML -->