The idea of this script is to allow dynamically created elements to respond to a keyup function that changes the inner html (or jQuery text()) based on what is inside of a text form.
Each dynamically created element has it's own text form and title. So whatever you type in that given element's text form should become the title for that element which is wrapped in tags.
I've tried a few ways but I just cant get it to work. What is the best way to go about this?
Here's my latest attempt - http://jsfiddle.net/gnkxxgjz/1/
$('body').on('keyup', '.qForms', function() {
var nameOfLoan = [];
var loanOfName = function(t) {
if ($(this).hasClass('.loanNameV'+t)) {
$('body').on('keyup', '.qForms', function() {
var loanN = $('.loanNameV'+t).val();
$('.nameLoan'+t).text(loanN);
});
}
else {
return false;
}
};
for (var t=1; t < z; t++) {
nameOfLoan[t] = loanOfName(t);
}
for (var j=1; j < z; j++) {
nameOfLoan[j]();
}
});
Take a look at this Fiddle
<button onclick="crea()">create</button>
<div id="d1">
</div>
function crea(){
$('#d1').append( $("<h2></h2><input>").on('keyup',function(){
$(this).prev().html( $(this).val() );
}) )
}
Something along these lines:
$(document).on("keypress", $("input"), function(e){
console.log($(e.target).attr("id"))
});
This will print to the console the id attribute of any input field you type into. Please provide how the input and text elements are related and I might be able to link them in this code piece.
I am trying to get a line of JQuery script to read every paragraph string found in a div and split that paragraph every time there is a ','. My issues is that I am unable to POST all of the array at once, so the replaceWith function only outputs the first value of the array because the rest of the array is deleted when the for condition returns to increment to myArray[1].
Is there anyway for me to post every value in the 'array of splits' to separate html elements without leaving the initial string and/or turning every created element a child of the previous element?
DEMO
http://jsfiddle.net/ry25Q/
HTML
<div class="data">
<i>days_of_week</i>
<p>mon,tue,wed,thur,fri,sat,sun</p>
</div>
<div>
<input type="button" class="btnClick Button" value="Click" />
</div>
JS CODE
$(function () {
$('.btnClick').click(function () {
var data = $('.data p').text();
var splitter = data.split(',');
for (var i = 0; i < splitter.length; i++) {
$(".data p").replaceWith("<span class='dataseg'>" + splitter[i] + "</span>")
}
});
});
You don't need a loop. Since you're only replacing one p element, just call .replaceWith() once with the full HTML string you're inserting.
DEMO: http://jsfiddle.net/Vfk4e/
$(function () {
$('.btnClick').click(function () {
var p = $('.data p');
var splitter = p.text().split(',');
var open = "<span class='dataseg'>";
var close = "</span>"
p.replaceWith(open + splitter.join(close + open) + close)
});
});
Can't you just add $('.data p').text(''); before your for statement? This will clear the contents,t hen your .append from your fiddle will work just fine.
$(function () {
$('.btnClick').click(function () {
var data = $('.data p').text();
var splitter = data.split(',');
$('.data p').text('');
for (var i = 0; i < splitter.length; i++) {
$(".data p").append("<span class='dataseg'>" + splitter[i] + "</span>")
}
});
});
Try to create a variable for the span element you wish to replace the <p> element with. Then inside of your for loop, sequentially add your data to the span element. After the loop, close your span and then call replaceWith() with the span variable.
$(function () {
$('.btnClick').click(function () {
var data = $('.data p').text();
var splitter = data.split(',');
var daySpan = "<span class='dataseg'>";
for (var i = 0; i < splitter.length; i++) {
daySpan += splitter[i];
}
daySpan += "</span>";
$(".data p").replaceWith( daySpan );
});
});
Demo: http://codepen.io/imajedi4ever/pen/kpzCD/?editors=101
I have a textbox that comma separated/delimited values are entered into which I have to make sure has unique entries. Solved that using Paul Irish's Duck Punching example #2 and tying it to onblur for that textbox.
The values entered into the textbox get broken out into a table. As the table can get very lengthy, I found Mottie's Tablesorter to work brilliantly.
The problem is, the the Duck Punching code is breaking the Tablesorter. The style for the Tablesorter is passed through just fine, but the table doesn't actually sort. BUT, when I comment out the Duck Punching code, Tablesorter miraculosly works.
My coding skills are not such that I can figure out why the two are conflicting. Any assistance would be much appreciated.
I haven't modified the Tablesorter code or added any special sorting elements to it...just following the very basic example right now. Here's the Duck Punching code which I've only modified to include the var for the textbox I need to have unique entries.
function ValidateTextBox1()
{
(function($){
var arr = document.getElementById("TextBox1").value.split(',');
var _old = $.unique;
$.unique = function(arr){
// do the default behavior only if we got an array of elements
if (!!arr[0].nodeType){
return _old.apply(this,arguments);
} else {
// reduce the array to contain no dupes via grep/inArray
return $.grep(arr,function(v,k){
return $.inArray(v,arr) === k;
});
}
};
})(jQuery);
}
The function above is in a separate js file which is called via onblur for TextBox1.
Then, I have a button which runs the following:
function GenerateTable()
{
var Entry1 = document.getElementById("TextBox1").value
var Entry2 = document.getElementById("TextBox2").value
var content = "<table id=myTable class=tablesorter ><thead><tr><th>Entry 1 Values</th><th>Entry 2 Value</th></tr></thead><tbody>"
var lines = Entry1.split(","),
i;
for (i = 0; i < lines.length; i++)
content += "<tr><td>" + (Entry1.split(",")[i]) + "</td><td>" + Entry2 + "</td></tr>";
content += "</tbody></table>"
$("#here_table").append(content);
$(function(){
$("#myTable").tablesorter({
theme: 'default'
});
});
}
The function will generate/append the table in a specific DIV.
If I leave in the validation code for TextBox1, the table will generate but isn't sortable (though it does manage to still pull the theme).
If I remove the validation code, the table will generate and is sortable.
The validateText box function above will not work as expected. In this case, "duck-punching" is not even necessary.
Here is how I would fix the script (demo):
HTML
<textarea id="textbox1">6,1,7,5,3,4,3,2,4</textarea><br>
<textarea id="textbox2">column 2</textarea><br>
<button>Build Table</button>
<div id="here_table"></div>
Script (requires jQuery 1.7+)
(function($) {
// bind to button
$(function () {
$('button').on('click', function () {
// disable button to prevent multiple updates
$(this).prop('disabled', true);
generateTable();
});
});
function unique(arr) {
return $.grep(arr, function (v, k) {
return $.inArray(v, arr) === k;
});
}
function generateTable() {
var i,
$wrap = $('#here_table'),
// get text box value, remove unwanted
// spaces/tabs/carriage returns & create an array
val = $('#textbox1').val().split(/\s*,\s*/),
// get unique values for Entry1
entry1 = unique( val ),
entry2 = $('#textbox2').val(),
content = "";
// build tbody rows
for (i = 0; i < entry1.length; i++) {
content += "<tr><td>" + (entry1[i] || '?') + "</td><td>" + entry2 + "</td></tr>";
}
// update or create table
if ($wrap.find('table').length) {
// table exists, just update the data
$wrap.find('tbody').remove();
$wrap.find('table')
.append(content)
.trigger('update');
} else {
// table doesn't exist, build it from scratch
$wrap
.html('<table id=myTable class=tablesorter><thead><tr>' +
'<th>Entry 1 Values</th>' +
'<th>Entry 2 Value</th>' +
'</tr></thead><tbody>' + content + '</tbody></table>')
.find('table')
.tablesorter({
theme: 'blue'
});
}
// enable the button to allow updating the table
$('button').prop('disabled', false);
}
})(jQuery);
I tried to add a few comments to make more clear what each step is doing. Please feel free to ask for any clarification.
I'm trying to build a "search in the shown elements" function with jquery and css.
Here's what I got so far:
http://jsfiddle.net/jonigiuro/wTjzc/
Now I need to add a little feature and I don't know where to start. Basically, when you write something in the search field, the corresponding letters should be highlighted in the list (see screenshot, the blue highlighted part)
Here's the script so far:
var FilterParticipants = function(options) {
this.options = options;
this.participantList = [];
this.init = function() {
var self = this;
//GENERATE PARTICIPANTS OPBJECT
for(var i = 0; i < this.options.participantBox.length ; i++) {
this.participantList.push({
element: this.options.participantBox.eq(i),
name: this.options.participantBox.eq(i).find('.name').text().toLowerCase()
})
}
//ADD EVENT LISTENER
this.options.searchField.on('keyup', function() {
self.filter($(this).val());
})
}
this.filter = function( string ) {
var list = this.participantList;
for(var i = 0 ; i < this.participantList.length; i++) {
var currentItem = list[i];
//COMPARE THE INPUT WITH THE PARTICIPANTS OBJECT (NAME)
if( currentItem.name.indexOf(string.toLowerCase()) == -1) {
currentItem.element.addClass('hidden');
} else {
currentItem.element.removeClass('hidden');
}
}
}
this.init();
}
var filterParticipants = new FilterParticipants({
searchField: $('#participants-field'),
participantBox: $('.single_participant'),
nameClass: 'name'
});
I think you're just complicating things too much... You can do this easily in a few lines. Hope this helps:
var $search = $('#participants-field');
var $names = $('.single_participant p');
$search.keyup(function(){
var match = RegExp(this.value, 'gi'); // case-insensitive
$names
.hide()
.filter(function(){ return match.test($(this).text()) })
.show()
.html(function(){
if (!$search.val()) return $(this).text();
return $(this).text().replace(match, '<span class="highlight">$&</span>');
});
});
I used hide and show because it feels snappier but you can use CSS3 animations and classes like you were doing.
Demo: http://jsfiddle.net/elclanrs/wTjzc/8/
Here`s the way to do it with jQuery autocomplete so question
If you want to build it on your own you can do the following:
1. Get the data of every item.
2. Make render function in which you will substitute say "Fir" in Fire word to Fire
3. Every time you change the text in the input you can go through the items and perform substitution.
Let's say I have an html form. Each input/select/textarea will have a corresponding <label> with the for attribute set to the id of it's companion. In this case, I know that each input will only have a single label.
Given an input element in javascript — via an onkeyup event, for example — what's the best way to find it's associated label?
If you are using jQuery you can do something like this
$('label[for="foo"]').hide ();
If you aren't using jQuery you'll have to search for the label. Here is a function that takes the element as an argument and returns the associated label
function findLableForControl(el) {
var idVal = el.id;
labels = document.getElementsByTagName('label');
for( var i = 0; i < labels.length; i++ ) {
if (labels[i].htmlFor == idVal)
return labels[i];
}
}
First, scan the page for labels, and assign a reference to the label from the actual form element:
var labels = document.getElementsByTagName('LABEL');
for (var i = 0; i < labels.length; i++) {
if (labels[i].htmlFor != '') {
var elem = document.getElementById(labels[i].htmlFor);
if (elem)
elem.label = labels[i];
}
}
Then, you can simply go:
document.getElementById('MyFormElem').label.innerHTML = 'Look ma this works!';
No need for a lookup array :)
There is a labels property in the HTML5 standard which points to labels which are associated to an input element.
So you could use something like this (support for native labels property but with a fallback for retrieving labels in case the browser doesn't support it)...
var getLabelsForInputElement = function(element) {
var labels = [];
var id = element.id;
if (element.labels) {
return element.labels;
}
id && Array.prototype.push
.apply(labels, document.querySelector("label[for='" + id + "']"));
while (element = element.parentNode) {
if (element.tagName.toLowerCase() == "label") {
labels.push(element);
}
}
return labels;
};
// ES6
var getLabelsForInputElement = (element) => {
let labels;
let id = element.id;
if (element.labels) {
return element.labels;
}
if (id) {
labels = Array.from(document.querySelector(`label[for='${id}']`)));
}
while (element = element.parentNode) {
if (element.tagName.toLowerCase() == "label") {
labels.push(element);
}
}
return labels;
};
Even easier if you're using jQuery...
var getLabelsForInputElement = function(element) {
var labels = $();
var id = element.id;
if (element.labels) {
return element.labels;
}
id && (labels = $("label[for='" + id + "']")));
labels = labels.add($(element).parents("label"));
return labels;
};
document.querySelector("label[for=" + vHtmlInputElement.id + "]");
This answers the question in the simplest and leanest manner.
This uses vanilla javascript and works on all main-stream proper browsers.
I am a bit surprised that nobody seems to know that you're perfectly allowed to do:
<label>Put your stuff here: <input value="Stuff"></label>
Which won't get picked up by any of the suggested answers, but will label the input correctly.
Here's some code that does take this case into account:
$.fn.getLabels = function() {
return this.map(function() {
var labels = $(this).parents('label');
if (this.id) {
labels.add('label[for="' + this.id + '"]');
}
return labels.get();
});
};
Usage:
$('#myfancyinput').getLabels();
Some notes:
The code was written for clarity, not for performance. More performant alternatives may be available.
This code supports getting the labels of multiple items in one go. If that's not what you want, adapt as necessary.
This still doesn't take care of things like aria-labelledby if you were to use that (left as an exercise to the reader).
Using multiple labels is a tricky business when it comes to support in different user agents and assistive technologies, so test well and use at your own risk, etc. etc.
Yes, you could also implement this without using jQuery. :-)
Earlier...
var labels = document.getElementsByTagName("LABEL"),
lookup = {},
i, label;
for (i = 0; i < labels.length; i++) {
label = labels[i];
if (document.getElementById(label.htmlFor)) {
lookup[label.htmlFor] = label;
}
}
Later...
var myLabel = lookup[myInput.id];
Snarky comment: Yes, you can also do it with JQuery. :-)
All the other answers are extremely outdated!!
All you have to do is:
input.labels
HTML5 has been supported by all of the major browsers for many years already. There is absolutely no reason that you should have to make this from scratch on your own or polyfill it! Literally just use input.labels and it solves all of your problems.
with jquery you could do something like
var nameOfLabel = someInput.attr('id');
var label = $("label[for='" + nameOfLabel + "']");
If you're willing to use querySelector (and you can, even down to IE9 and sometimes IE8!), another method becomes viable.
If your form field has an ID, and you use the label's for attribute, this becomes pretty simple in modern JavaScript:
var form = document.querySelector('.sample-form');
var formFields = form.querySelectorAll('.form-field');
[].forEach.call(formFields, function (formField) {
var inputId = formField.id;
var label = form.querySelector('label[for=' + inputId + ']');
console.log(label.textContent);
});
Some have noted about multiple labels; if they all use the same value for the for attribute, just use querySelectorAll instead of querySelector and loop through to get everything you need.
Solution One <label>: One <input>
Using HTML 5.2 reference
Considering the <label> pointing to <input> using for=, the labels element will be a non empty array, and act as a link to the <label> element, accessing all properties of it, including its id=.
function myFunction() {
document.getElementById("p1").innerHTML = "The first label associated with input: <b>" + document.getElementById("input4").labels[0].id + "</b>";
}
<form>
<label id="theLabel" for="input4">my id is "theLabel"</label>
<input name="name1" id="input4" value="my id is input4">
<br>
</form>
<p>Click the "click me" button to see the label properties</p>
<button onclick="myFunction()">click me</button>
<p id="p1"></p>
Solution Many <label>: One <input>
With more than one <label> using for=, you can make a loop to show all of them, like this:
function myFunction2() {
var x = document.getElementById("input7").labels;
let text = "";
for (let i = 0; i < x.length; i++) {
text += x[i].id + "<br>";
}
document.getElementById("p7").innerHTML = text;
}
<b>Three labels for one input</b><br>
<br>
<form>
<label id="theLabel2" for="input7">my id is "theLabel2</label><br>
<label id="theLabel3" for="input7">my id is "theLabel3</label><br>
<label id="theLabel4" for="input7">my id is "theLabel4</label><br>
<input name="name1" id="input7" value="my id is input7">
<br>
</form>
<p>Click the "click me" button to see the label properties</p>
<button onclick="myFunction2()">click me2</button>
<p id="p7"></p>
$("label[for='inputId']").text()
This helped me to get the label of an input element using its ID.
Answer from Gijs was most valuable for me, but unfortunately the extension does not work.
Here's a rewritten extension that works, it may help someone:
jQuery.fn.getLabels = function () {
return this.map(function () {
var parentLabels = $(this).parents('label').get();
var associatedLabels = this.id ? associatedLabels = $("label[for='" + this.id + "']").get() : [];
return parentLabels.concat(associatedLabels);
});
};
A really concise solution using ES6 features like destructuring and implicit returns to turn it into a handy one liner would be:
const getLabels = ({ labels, id }) => labels || document.querySelectorAll(`label[for=${id}]`)
Or to simply get one label, not a NodeList:
const getFirstLabel = ({ labels, id }) => labels && labels[0] || document.querySelector(`label[for=${id}]`)
It is actually far easier to add an id to the label in the form itself, for example:
<label for="firstName" id="firstNameLabel">FirstName:</label>
<input type="text" id="firstName" name="firstName" class="input_Field"
pattern="^[a-zA-Z\s\-]{2,25}$" maxlength="25"
title="Alphabetic, Space, Dash Only, 2-25 Characters Long"
autocomplete="on" required
/>
Then, you can simply use something like this:
if (myvariableforpagelang == 'es') {
// set field label to spanish
document.getElementById("firstNameLabel").innerHTML = "Primer Nombre:";
// set field tooltip (title to spanish
document.getElementById("firstName").title = "Alfabética, espacio, guión Sólo, 2-25 caracteres de longitud";
}
The javascript does have to be in a body onload function to work.
Just a thought, works beautifully for me.
As it has been already mentionned, the (currently) top-rated answer does not take into account the possibility to embed an input inside a label.
Since nobody has posted a JQuery-free answer, here is mine :
var labels = form.getElementsByTagName ('label');
var input_label = {};
for (var i = 0 ; i != labels.length ; i++)
{
var label = labels[i];
var input = label.htmlFor
? document.getElementById(label.htmlFor)
: label.getElementsByTagName('input')[0];
input_label[input.outerHTML] =
(label.innerText || label.textContent); // innerText for IE8-
}
In this example, for the sake of simplicity, the lookup table is directly indexed by the input HTML elements. This is hardly efficient and you can adapt it however you like.
You can use a form as base element, or the whole document if you want to get labels for multiple forms at once.
No checks are made for incorrect HTML (multiple or missing inputs inside labels, missing input with corresponding htmlFor id, etc), but feel free to add them.
You might want to trim the label texts, since trailing spaces are often present when the input is embedded in the label.
The best answer works perfectly fine but in most cases, it is overkill and inefficient to loop through all the label elements.
Here is an efficent function to get the label that goes with the input element:
function getLabelForInput(id)
{
var el = document.getElementById(id);
if (!el)
return null;
var elPrev = el.previousElementSibling;
var elNext = el.nextElementSibling;
while (elPrev || elNext)
{
if (elPrev)
{
if (elPrev.htmlFor === id)
return elPrev;
elPrev = elPrev.previousElementSibling;
}
if (elNext)
{
if (elNext.htmlFor === id)
return elNext;
elNext = elNext.nextElementSibling;
}
}
return null;
}
For me, this one line of code was sufficient:
el = document.getElementById(id).previousElementSibling;
In most cases, the label will be very close or next to the input, which means the loop in the above function only needs to iterate a very small number of times.
Use a JQuery selector:
$("label[for="+inputElement.id+"]")
For future searchers... The following is a jQuery-ified version of FlySwat's accepted answer:
var labels = $("label");
for (var i = 0; i < labels.length; i++) {
var fieldId = labels[i].htmlFor;
if (fieldId != "") {
var elem = $("#" + fieldId);
if (elem.length != 0) {
elem.data("label", $(labels[i]));
}
}
}
Using:
$("#myFormElemId").data("label").css("border","3px solid red");
I know this is old, but I had trouble with some solutions and pieced this together. I have tested this on Windows (Chrome, Firefox and MSIE) and OS X (Chrome and Safari) and believe this is the simplest solution. It works with these three style of attaching a label.
<label><input type="checkbox" class="c123" id="cb1" name="item1">item1</label>
<input type="checkbox" class="c123" id="cb2" name="item2">item2</input>
<input type="checkbox" class="c123" id="cb3" name="item3"><label for="cb3">item3</label>
Using jQuery:
$(".c123").click(function() {
$cb = $(this);
$lb = $(this).parent();
alert( $cb.attr('id') + ' = ' + $lb.text() );
});
My JSFiddle: http://jsfiddle.net/pnosko/6PQCw/
I have made for my own need, can be useful for somebody: JSFIDDLE
$("input").each(function () {
if ($.trim($(this).prev('label').text()) != "") {
console.log("\nprev>children:");
console.log($.trim($(this).prev('label').text()));
} else {
if ($.trim($(this).parent('label').text()) != "") {
console.log("\nparent>children:");
console.log($.trim($(this).parent('label').text()));
} else {
if ($.trim($(this).parent().prev('label').text()) != "") {
console.log("\nparent>prev>children:");
console.log($.trim($(this).parent().prev('label').text()));
} else {
console.log("NOTFOUND! So set your own condition now");
}
}
}
});
I am bit surprised no one is suggesting to use the CSS relationship method?
in a style sheet you can reference a label from the element selector:
<style>
//for input element with class 'YYY'
input.YYY + label {}
</style>
if the checkbox has an id of 'XXX'
then the label would be found through jQuery by:
$('#XXX + label');
You can also apply .find('+ label') to return the label from a jQuery checkbox element, ie useful when looping:
$('input[type=checkbox]').each( function(){
$(this).find('+ label');
});
If you use the for attribute, you can use querySelector(...) to get
the associated label.
HTML/JavaScript
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
</head>
<body>
<label for="myCheckbox">Log Report to Console?</label>
<input name="myCheckbox" type="checkbox" oninput="doSomething(event)" />
<script type="text/javascript">
function doSomething(e) {
const query = `label[for="${e.target.name}"]`; // This is string interpolation NOT JQuery
const label = document.querySelector(query);
}
</script>
</body>
</html>
Plain JavaScript
function doSomething(e) {
// const query = `label[for="${e.target.name}"]`; // This is string interpolation NOT JQuery
// Maybe it is safer to use ".getAttribute"
const query = `label[for="${e.target.getAttribute("name")}"]`;
const label = document.querySelector(query);
// Do what you want with the label here...
debugger; // You're welcome
console.log(label);
}