Develop Reference

How to put a degree symbol in an html input field through javascript

I have a text box as
HTML
<input type="text" id="lat" placeholder="Latitude" ng-lat value="9°">
which works fine as it displays the degree sign perfectly, but when I try to set the value through jquery like
Jquery
$("#lat").val("9°")
Its displaying the entire text instead of the degree symbol.

You can target the value attribute:
$("#lat").attr('value',"101"+String.fromCharCode(176))
it is also better to use .text() to set the text because .val() is used to retrieve the value of an element

You can use HEXCode,
e.g
<a href id="my">Here</a>
<script>
$('#my').click(function()
{
alert('9\xB0');
});
</script>
Also go through this link

$("#test").click(function(){
$("#lat").val("29" + ascii(176))
});
function ascii (a) { return String.fromCharCode(a); }
Updated JSFiddle for further help: http://jsfiddle.net/zkh2of12/1/

Use the special tag besides the input field, it will be clear for the user:
<input type="text" id="lat" placeholder="Latitude °" value=""> °

What about just setting the symbol directly in JavaScript instead of the HTML code?
$(function(){
$("#set").click(function(){
$("#lat").val("°");
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="text" id="lat" placeholder="Latitude" ng-lat value="9°">
<button id="set">set</button>
If you want to improve those just make a hidden <span> with the html code you like inside and then just pick the html with JavaScript. This will work even for symbols you cannot post in JS

Try this:
$("#lat").attr("val","9"+ascii(176));

jQuery click function on an array of inputs

I try to implement a change function on every input field named plz_von.
<input type="text" name="plz_von[]" class="plz_von" placeholder="10000">
<input type="text" name="plz_von[]" class="plz_von" placeholder="20000">
<input type="text" name="plz_von[]" class="plz_von" placeholder="30000">
<input type="text" name="plz_von[]" class="plz_von" placeholder="40000">
I want to do it this way:
$('input[name="plz_von[]"]').change(function() {
alert("got it");
});
I don't know what's going wrong. Any idea? I tried it with the class name as well.

Because [ ] is an attribute selector. You need to escape it.
$('input[name="plz_von\\[\\]"]')
Since you have a class that is common, you might as well use that instead.
$('input.plz_von')

Thanks all for the support. Finally I found the failure.
I had to put the jQuery code into the ready function! This is quite clear, because the function cannot by added to the inputfield, when the input field isn't already loaded in the DOM.. grrr
$(document).ready(function() {
$('input[name="plz_von[]"]').change(function() {
alert("hu");
});
});
Best regards,
Marco

clear value in an input field with jQuery

Hi I have a number of inputs for telephone numbers, they use the same class and the same show/hide techinque.
I want to be able to clear the contents of the phone number in the input box, i.e. with the class name of input_tel.
However it seems to clear all inputs which I assume is because I am using the following line; input:text , when I put in a class it just fails to work.
My JS and some of my html is below or view a jsFiddle:
$(".contact_numbers").on('click', '.clearnumber', function () {
$(this).siblings('input:text').val('');
});
<div class="telephonetwo contact_numbers">
<input type="text" class="smallinput contactpagelabel" name="faxname" size="10" value="Fax">
<input type="checkbox" class="contact_no" name="showfax" value="Y">
<input type="text" name="fax" size="30" value="016128 13456" class="input_tel">
Hide Clear #
</div>
If you are viewing my JSfiddle click the reveal additional numbers for the clear button to appear.
Update
I want to be able to clear the closest input_tel rather than all of them, as their are multiple numbers.
Thanks in advance

replace:
$(this).siblings('input:text').val('');
with
$(this).siblings('input:text').closest('.input_tel').val('');
JSFIDDLE DEMO

How about targeting the input_tel class then?
$(".contact_numbers").on('click', '.clearnumber', function () {
$(this).parent().parent().find('input.input_tel').val('');
});
Assuming no other input fields have that input_tel class on them.

This should do it...
$(".contact_numbers").on('click', function () {
$(".input_tel").val('');
});

The safe way to clear input fields with jquery
$.fn.noText = function() {/*use the jquery prototype technology to make a chainable clear field method*/
if(this.is('input')){ /*check to c if you the element type is an input*/
this.val('');/*clear the input field*/
}return this;/*means it is chainable*/
};
$('input').noText();

Jquery Setting Value of Input Field

I have an input field and i am trying to set its value using its class
<form:input path="userName" id="userName" title="Choose A Unique UserName" readonly="${userNameStatus}" class="formData"/>
Which renders as:
<input id="userName" name="userName" title="Choose A Unique UserName" class="formData" type="text" value=""/>
I am using the following jquery but this does not seem to work. Can someone tell me where i am going wrong.
$(".formData").html("");
Edited JQuery Function that handles the event
$('#reset').click(function (){
$("#userNameErr").text("");
$('#badgeNoErr').text("");
$(".errors").html("");
$(".formData").val("");
});
nor is $(".formData").text("") or $(".formData").val("") working.

This should work.
$(".formData").val("valuesgoeshere")
For empty
$(".formData").val("")
If this does not work, you should post a jsFiddle.
Demo:
$(function() {
$(".resetInput").on("click", function() {
$(".formData").val("");
});
})
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<input type="text" class="formData" value="yoyoyo">
<button class="resetInput">Click Here to reset</button>

If the input field has a class name formData use this :
$(".formData").val("data")
If the input field has an id attribute name formData use this :
$("#formData").val("data")
If the input name is given use this :
$("input[name='formData']").val("data")
You can also mention the type. Then it will refer to all the inputs of that type and the given class name:
$("input[type='text'].formData").val("data")

change your jquery loading setting to onload in jsfiddle . . .it works . . .

use this code for set value in input tag by another id.
$(".formdata").val(document.getElementById("fsd").innerHTML);
or
use this code for set value in input tag using classname="formdata"
$(".formdata").val("hello");

You just write this script. use input element for this.
$("input").val("valuesgoeshere");
or by id="fsd" you write this code.
$("input").val(document.getElementById("fsd").innerHTML);

$('.formData').attr('value','YOUR_VALUE')

Put your jQuery function in
$(document).ready(function(){
});
It's surely solved.

How to name inputs when having several jquery raty in one form?

I'm using the jquery raty plugin http://www.wbotelhos.com/raty/ to make a form with star rating.
The plugin generates a hidden field for each star rating input like this :
<input id="question8-score" type="hidden" name="score">
<input id="question6-score" type="hidden" name="score">
<input id="question5-score" type="hidden" name="score">
The is when I validate the form (I use codeigniter) It just get confused with 3 input with the same name. So I want to make a script that do something like :
For each input with name="score", put the id attribute value as the name attribute value.
I think it's probably possible with jQuery but I don't know how to do that. Could someone help me? Thanks!!

$("input[name=score]").each(function () {
this.name = this.id;
});
Edited the selector

$(document).ready(function() {
$('input[name^="score"]').each(function() { // starts with score
this.name=this.id;
});
}

$('input[name=score]').each(function(){
$(this).attr("name", $(this).attr("id"));
});