I have the following mark-up:
$(document).ready(function () {
$('.lalala').bind('blur', function (e) {
CheckFirstInput($(this));
});
});
<div id="divContainer">
<input type="text" class="lalala" />
<p id="img1"></p>
</div>
And the following script
function CheckFirstInput(element) {
var txtLength = element.val();
var parent;
var lastElement;
if (txtLength.length < 1) {
parent = element.parent();
lastElement = parent.last();
lastElement.text('prazno e');
}
else {
//element.parent().lastChild().text('4884384f384r34rf');
parent = element.parent();
lastElement = parent.last();
lastElement.text('ne e prazno');
}
}
If the input field is not empty I want to select the last element of the wrapping div (<p>) and change its text. How do I do that?
Thanks in advance!!
You needed to select the children() of the element's parent. You were selecting the last parent. (Which is the parent.)
The following is working. I also cleaned up the code a bit.
$('.lalala').blur( function () {
CheckFirstInput($(this));
});
function CheckFirstInput(element) {
if (element.val().length < 1) {
element.siblings(':last').html('prazno e');
}
else {
element.siblings(':last').html('ne e prazno ');
}
}
Working Fiddle
http://jsfiddle.net/CRccw/2/
If i got it right you could check $(element).is(":empty") and use parent.siblings(":last-child")
Your question has been answered, but here is another way to do it:
$('.lalala').bind('blur', function (e) {
CheckFirstInput($(this));
});
function CheckFirstInput($el) {
var $last = $el.siblings().filter(':last');
var html = ($el.val() == '') ? 'prazno e' : 'ne e prazno';
$last.html(html);
}
DEMO
Related
I want to replace #cardvieo_localstream with #cardvideo_remotestream at the first click, again I click the same element, I want to change #cardvideo_remotestream back #cardvieo_localstream, I'm not sharp at jQuery yet, but I'm trying to learn. I appreciate all help I can get.
I've try this code but working on first click. but not working on second click
$('.video-list .videoWrap').on('click', function() {
var $thisVideoWrap = $(this).find('.video-list .videoWrap');
var $mainVideoWrap = $('.mainVideoWrap');
if ($(this).attr('id') === '#cardvideo_localStream') {
$(this).attr('id', '#cardvideo_remotestream');
}
else if($(this).attr('id') == '#cardvideo_localStream') {
$(this).attr('id', '#cardvideo_local');
$mainVideoWrap.attr('id', 'cardvideo_remotestream');
}
});
Don't change An Id Attribute because of id is a unique value Only use the Classname, I swap the elements successfully
// using jQuery
var initVideoSwapping = function () {
// check if there is an element first
if ($('.video-list .videoWrap').length > 0) {
$('.video-list .videoWrap').on('click', function () {
var $thisVideo = $(this).find('video')[0];
var $mainVideo = $('.mainVideoWrap').find('video')[0];
swapNodes($thisVideo, $mainVideo)
});
}
}
function swapNodes(a, b) {
var aparent = a.parentNode;
var asibling = a.nextSibling === b ? a : a.nextSibling;
b.parentNode.insertBefore(a, b);
aparent.insertBefore(b, asibling);
}
$(function () {
initVideoSwapping();
});
I have an input[type=text] area and i'll paste/type a URL in it.
If pasted/typed url contains http, i want to hide $('#button') element.
If its not, keep showing the button also.
Thanks for any help.
Here is my demo code so far:
$('#pasteUrl').on('input', function () {
var str = $('#pasteUrl').val();
if (str.indexOf("http") !== -1) {
$('#button').hide();
}
});
Edit: Added "propertychange" to events as suggested by OP in the comments.
$('#pasteUrl').on('input propertychange', function (ev) {
var str = $(ev.currentTarget).val();
if (str.indexOf("http") != -1) {
$('#button').hide();
} else {
$('#button').show();
}
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input id="pasteUrl" />
<button id="button">Go</button>
This is likely what you want - using toggle:
$('#pasteUrl').on('input propertychange', function() {
var str = $(this).val();
$('#button').toggle(str.indexOf("http") == -1);
});
I am trying to toggle a div so it shows and hides when a user enters text into textarea.
i am using the below code and its not working for me, can anyone please show me why? thanks
html:
<head>
<script>
$(document).ready(function() {
$("#cname").keyup(function() {
if ($("#cname").val() > 8) {
$('#cname2').toggle("slow");
}
});
});
</script>
</head>
<form>
<input type="text" id="cname" name="cname" class="field">
<div id="cname2"></div>
</form>
css:
#cname2{
width:30px;
height:30px;
position:absolute;
margin-top:-13px;
margin-left:400px;
background-image: url('tick.png');
background-repeat:no-repeat;
background-position:right;
display:none;
}
so apparently my above code doesnt work in IE 9, but i should be able to achieve what i am trying to do by using this code, but can someone please show me where i place my div ID/how i adapt it to work for me?
var activeElement = null;
var activeElementValue = null;
// On focus, start watching the element
document.addEventListener("focusin", function(e) {
var target = e.srcElement;
if (target.nodeName !== "INPUT") return;
// Store a reference to the focused element and its current value
activeElement = target;
activeElementValue = target.value;
// Listen to the propertychange event
activeElement.attachEvent("onpropertychange", handlePropertyChange);
// Override .value to track changes from JavaScript
var valueProp = Object.getOwnPropertyDescriptor(
HTMLInputElement.prototype, 'value');
Object.defineProperty(activeElement, {
get: function() { return valueProp.get.call(this); },
set: function(val) {
activeElementValue = val;
valueProp.set.call(this, val);
}
});
});
// And on blur, stop watching
document.addEventListener("focusout", function(e) {
if (!activeElement) return;
// Stop listening to propertychange and restore the original .value prop
activeElement.detachEvent("onpropertychange", handlePropertyChange);
delete activeElement.value;
activeElement = null;
activeElementValue = null;
});
function handlePropertyChange(e) {
if (e.propertyName === "value" &&
activeElementValue !== activeElement.value) {
activeElementValue = activeElement.value;
// Fire textchange event on activeElement
}
};
$(document).ready(function() {
$("#cname").keyup(function() {
if ($("#cname").val().length > 8) {
$('#cname2').show();
} else {
$('#cname2').hide();
}
});
});
One possible approach (demo):
$(document).ready(function() {
$("#cname").on('input', function() {
$('#cname2')[this.value.length > 8 ? 'hide' : 'show']('slow');
});
});
Here I assumed that in cname2 container there's some warning message, that has to be shown if length of text input is 8 or less characters. Note also that I've used oninput handler, not keyup: as it allows me to process mouse-driven cut-and-paste as well as direct input. The only drawback is that IE8 doesn't support this event (and IE9 support for it is rather buggy, as handler is not fired when character is removed from text input).
Use this Javascript function
var z = document.getElementById('cname');
z.onkeyup = function(){
document.getElementById('cname2').innerHTML = z.value;
}
Your HTML:
<input type='text' name='cname' class='field' id='cname'>
<div class='cname2' id='cname2'></div>
Checkout here: http://jsfiddle.net/iamsajeev/Q9LPv/
$(document).ready(function() {
$("#cname").keyup(function() {
if ($("#cname").val() > 8) {
$('#cname2').fadeIn("slow");
}
else
{
$('#cname2').fadeOut("slow");
}
});
});
http://jsfiddle.net/5EjP7/2/
I hope that helps
Try the following script:
$(document).ready(function() {
$("#cname").keyup(function() {
if ($("#cname").val().length > 8) {
$('#cname2').toggle("slow");
}
});
});
I'm currently using the following to attempt to highlight an element (div.box) that is inside the targeted element of an anchor (example, section#help). The anchor is used to scroll to #help, but I only need to highlight the div.box that is in the #help.
$(document).ready(function() {
$(".box").removeClass("highlightTarget");
var myLocation = document.location.hash.replace("#","");
if (myLocation) {
document.getElementById(myLocation).className = "highlightTarget";
}
$("a").click(function () {
$(".box").removeClass("highlightTarget");
var clickedLink = this.href.split("#");
if (clickedLink.length > 1) {
document.getElementById(clickedLink[1]).className = "highlightTarget";
}
});
});
Together with the css:
.highlightTarget {background:red}
Currently, my code changes the background of the section#help red. What am I doing wrong?
Any assistance is much appreciated.
what you for is the .box element inside the target element, so you need to use .find() inside the target element to find the .box element.
$("a").click(function () {
$(".box").removeClass("highlightTarget");
var clickedLink = this.href.split("#");
if (clickedLink.length > 1) {
$('#' + clickedLink[1]).find('.box').addClass("highlightTarget")
}
});
$(".box").removeClass("highlightTarget");
var myLocation = document.location.hash.replace("#","");
if (myLocation) {
document.getElementById(myLocation).className = "highlightTarget";
}
$("a").click(function () {
$(".box").removeClass("highlightTarget");
var clickedLink = this.href.split("#");
if (clickedLink.length > 1) {
$('#' + clickedLink[1]).find('.box').addClass('highlightTarget');
}
});
I have put together this piece of JavaScript, but I am struggling with the code as I'm a newbie. What I want to do is when a button is clicked it will change the background color opacity. The code below does this, but now I want the button to be reverted to the normal state when I click it again.
How can I do this? Thanks..
Normal state: background="rgba(255,0,0,0.8)"; Pressed state:
background="rgba(255,0,0,0.6)";
function highlight(id) {
document.getElementById(id).style.background="rgba(255,0,0,0.6)";
}
I would use a CSS class:
.opacityClicked{
background:rgba(255,0,0,0.8);
}
.opacityDefault{
background:rgba(255,0,0,0.6);
}
And change your function to:
function highlight(id) {
var element = document.getElementById(id);
element.class = (element.class == "opacityClicked") ? "opacityDefault" : "opacityClicked";
}
Or if you want to use only JavaScript
var isClicked = false;
function highlight(id) {
isClicked = !isClicked;
var element = document.getElementById(id);
element.style.background = (isClicked == true) ? "rgba(255,0,0,0.6)" : "rgba(255,0,0,0.8)";
}
Update(See comments: if you use 2 buttons):
var buttonClicked = null;
function highlight(id) {
if(buttonClicked != null)
{
buttonClicked.style.background = "rgba(255,0,0,0.8)";
}
buttonClicked = document.getElementById(id);
buttonClicked.style.background = "rgba(255,0,0,0.6)";
}
You could do something really quick like this:
First, add a hidden input element to your page like so:
<input type="button" id="foobar" value="FooBar!" onclick="highlight('foobar')" style="background-color:rgba(255,0,0,0.8);" />
<input type="hidden" id="one_neg_one" value="1" /> <= hidden element
Next, put this in your highlight function:
function highlight(id) {
var a = 7;
var o = document.getElementById("one_neg_one");
var newa = (a + (parseInt(o.value) * -1)) * 0.1;
document.getElementById(id).style.background="rgba(255,0,0," + newa + ")";
o.value = o.value * -1;
}
That should work, although I agree with a previous answer that you should use a css class for this.
#Ruben-J answer works fine. There is a syntax error though - you should instead use element.className rather than element.class.
https://developer.mozilla.org/en-US/docs/Web/API/Element/className
Below is an updated answer using the correct syntax:
function highlight(id) {
var element = document.getElementById(id);
element.className = (element.className == "opacityClicked") ? "opacityDefault" : "opacityClicked";
}
Also noticed that this answer doesn't show the HTML. Make sure to pass through the id element, not the name of the id.