Develop Reference

onmouseover not working in option [duplicate]

I am trying to show a description when hovering over an option in a select list, however, I am having trouble getting the code to recognize when hovering.
Relevant code:
Select chunk of form:
<select name="optionList" id="optionList" onclick="rankFeatures(false)" size="5"></select>
<select name="ranks" id="ranks" size="5"></select>
Manipulating selects (arrays defined earlier):
function rankFeatures(create) {
var $optionList = $("#optionList");
var $ranks = $("#ranks");
if(create == true) {
for(i=0; i<5; i++){
$optionList.append(features[i]);
};
}
else {
var index = $optionList.val();
$('#optionList option:selected').remove();
$ranks.append(features[index]);
};
}
This all works. It all falls apart when I try to deal with hovering over options:
$(document).ready(
function (event) {
$('select').hover(function(e) {
var $target = $(e.target);
if($target.is('option')) {
alert('yeah!');
};
})
})
I found that code while searching through Stack Exchange, yet I am having no luck getting it to work. The alert occurs when I click on an option. If I don't move the mouse and close the alert by hitting enter, it goes away. If I close out with the mouse a second alert window pops up. Just moving the mouse around the select occasionally results in an alert box popping up.
I have tried targeting the options directly, but have had little success with that. How do I get the alert to pop up if I hover over an option?

You can use the mouseenter event.
And you do not have to use all this code to check if the element is an option.
Just use the .on() syntax to delegate to the select element.
$(document).ready(function(event) {
$('select').on('mouseenter','option',function(e) {
alert('yeah');
// this refers to the option so you can do this.value if you need..
});
});
Demo at http://jsfiddle.net/AjfE8/

try with mouseover. Its working for me. Hover also working only when the focus comes out from the optionlist(like mouseout).
function (event) {
$('select').mouseover(function(e) {
var $target = $(e.target);
if($target.is('option')) {
alert('yeah!');
};
})
})

You don't need to rap in in a function, I could never get it to work this way. When taking it out works perfect. Also used mouseover because hover is ran when leaving the target.
$('option').mouseover(function(e) {
var $target = $(e.target);
if($target.is('option')) {
console.log('yeah!');
};
})​
Fiddle to see it working. Changed it to console so you don't get spammed with alerts. http://jsfiddle.net/HMDqb/

That you want is to detect hover event on option element, not on select:
$(document).ready(
function (event) {
$('#optionList option').hover(function(e) {
console.log(e.target);
});
})​

I have the same issue, but none of the solutions are working.
$("select").on('mouseenter','option',function(e) {
$("#show-me").show();
});
$("select").on('mouseleave','option',function(e) {
$("#show-me").hide();
});
$("option").mouseover(function(e) {
var $target = $(e.target);
if($target.is('option')) {
alert('yeah!');
};
});
Here my jsfiddle https://jsfiddle.net/ajg99wsm/

I would recommend to go for a customized variant if you like to ease
capture hover events
change hover color
same behavior for "drop down" and "all items" view
plus you can have
resizeable list
individual switching between single selection and multiple selection mode
more individual css-ing
multiple lines for option items
Just have a look to the sample attached.
$(document).ready(function() {
$('.custopt').addClass('liunsel');
$(".custopt, .custcont").on("mouseover", function(e) {
if ($(this).attr("id") == "crnk") {
$("#ranks").css("display", "block")
} else {
$(this).addClass("lihover");
}
})
$(".custopt, .custcont").on("mouseout", function(e) {
if ($(this).attr("id") == "crnk") {
$("#ranks").css("display", "none")
} else {
$(this).removeClass("lihover");
}
})
$(".custopt").on("click", function(e) {
$(".custopt").removeClass("lihover");
if ($("#btsm").val() == "ssm") {
//single select mode
$(".custopt").removeClass("lisel");
$(".custopt").addClass("liunsel");
$(this).removeClass("liunsel");
$(this).addClass("lisel");
} else if ($("#btsm").val() == "msm") {
//multiple select mode
if ($(this).is(".lisel")) {
$(this).addClass("liunsel");
$(this).removeClass("lisel");
} else {
$(this).addClass("lisel");
$(this).removeClass("liunsel");
}
}
updCustHead();
});
$(".custbtn").on("click", function() {
if ($(this).val() == "ssm") {
$(this).val("msm");
$(this).text("switch to single-select mode")
} else {
$(this).val("ssm");
$(this).text("switch to multi-select mode")
$(".custopt").removeClass("lisel");
$(".custopt").addClass("liunsel");
}
updCustHead();
});
function updCustHead() {
if ($("#btsm").val() == "ssm") {
if ($(".lisel").length <= 0) {
$("#hrnk").text("current selected option");
} else {
$("#hrnk").text($(".lisel").text());
}
} else {
var numopt = +$(".lisel").length,
allopt = $(".custopt").length;
$("#hrnk").text(numopt + " of " + allopt + " selected option" + (allopt > 1 || numopt === 0 ? 's' : ''));
}
}
});
body {
text-align: center;
}
.lisel {
background-color: yellow;
}
.liunsel {
background-color: lightgray;
}
.lihover {
background-color: coral;
}
.custopt {
margin: .2em 0 .2em 0;
padding: .1em .3em .1em .3em;
text-align: left;
font-size: .7em;
border-radius: .4em;
}
.custlist,
.custhead {
width: 100%;
text-align: left;
padding: .1em;
border: LightSeaGreen solid .2em;
border-radius: .4em;
height: 4em;
overflow-y: auto;
resize: vertical;
user-select: none;
}
.custlist {
display: none;
cursor: pointer;
}
.custhead {
resize: none;
height: 2.2em;
font-size: .7em;
padding: .1em .4em .1em .4em;
margin-bottom: -.2em;
width: 95%;
}
.custcont {
width: 7em;
padding: .5em 1em .6em .5em;
/* border: blue solid .2em; */
margin: 1em auto 1em auto;
}
.custbtn {
font-size: .7em;
width: 105%;
}
h3 {
margin: 1em 0 .5em .3em;
font-weight: bold;
font-size: 1em;
}
ul {
margin: 0;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<h3>
customized selectable, hoverable resizeable dropdown with multi-line, single-selection and multiple-selection support
</h3>
<div id="crnk" class="custcont">
<div>
<button id="btsm" class="custbtn" value="ssm">switch to multi-select mode</button>
</div>
<div id="hrnk" class="custhead">
current selected option
</div>
<ul id="ranks" class="custlist">
<li class="custopt">option one</li>
<li class="custopt">option two</li>
<li class="custopt">another third long option</li>
<li class="custopt">another fourth long option</li>
</ul>
</div>

How to make a character appear in a div when the character key has been pressed

I'm trying to recreate an input box using divs so that I can create fractions, surds etc inside. I want a user to be able to click on the div and press a key and the correct character appear inside the div, but nothing happens when I click on the div and press a key.
JS
$(document).ready(function() {
renderInputBox('#answerSpace');
$('#input1').on('click', function() {
inputSelected = !inputSelected
console.log(inputSelected);
})
let inputSelected = false
$(document).keypress(function(e) {
if (inputSelected) {
$('#input1').text(e.which)
}
})
function renderInputBox(area) {
$(area).html('<div class="input" id="input1"></div>')
}
CSS
.input {
min-width: 200px;
min-height: 24px;
border: 1px solid rgb(153, 153, 153);
display: flex;
flex-direction: row;
padding: 1px;
}
.input:hover {
border: 1px solid rgb(49, 156, 255);
box-shadow: 0 0 1px rgb(49, 155, 255);
cursor: text;
}

While I'm using your approach below you will see the issues you are going to have and I do mention the resources below what you are probably looking for.
There is no problem doing what you want to do, writing pressed keys to a div, however, you will have to implement every single basic text editor behavior yourself and that is a very big task.
As an example below, I have implemented backspace manually, so when it is pressed, the last character is removed.
While that is easy enough, what if the user highlights some letters in the middle of the string? In our case we would still only remove the last character but that is not what you would want.
What if, the user wants to click the mouse between 2 characters, how are you going to do that? How will you show the blinking caret or when a new key is pressed add the new text where the caret is and not just to the end?
What if, the user presses Ctrl+Home or Shift+Home?
You see how quickly you are going to end up re-writing basic editor features.
While the below example shows you what you want to do in it's basic essence, including some changes to make selection better, I think what you do want is a pre-build Text Editor for Math Equations.
This SO post has some suggestions for what you are looking for, talking about several Math Editors:
online-visual-maths-equation-editor-which-can-be-implemented-in-website
$(document).ready(function() {
let inputSelected = false
renderInputBox('#answerSpace');
$(document).on('click', function(e) {
inputSelected = $(e.target).is($('#input1'));
})
$(document).on('keyup', function(e) {
//console.log(e.which);
if (inputSelected) {
switch (e.which) {
case 8: // Backspace
$('#input1').text($('#input1').text().substring(0, $('#input1').text().length - 1));
break;
default:
$('#input1').text($('#input1').text() + e.key);
}
}
/* Append div with character to #input1 */
})
})
function renderInputBox(area) {
$(area).html('<div class="input" id="input1"></div>')
}
.input {
min-width: 200px;
min-height: 24px;
border: 1px solid rgb(153, 153, 153);
display: flex;
flex-direction: row;
padding: 1px;
}
.input:hover {
border: 1px solid rgb(49, 156, 255);
box-shadow: 0 0 1px rgb(49, 155, 255);
cursor: text;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id='answerSpace'></div>

I made a slight change to your code, I changed what I said in the comments above and also used another way to bind the event: .on('keypress', ...).
I also made a way to already write the key to the div, take a look.
$(document).ready(function() {
renderInputBox('#answerSpace');
$('#input1').on('click', function() {
inputSelected = !inputSelected
console.log(inputSelected);
})
var inputSelected = false
$(document).on('keypress', function(e) {
if (e.which == '13' && inputSelected) {
console.log('test');
}else if (inputSelected){
console.log(e.key);
var currentText = $(".input").text();
$(".input").text(currentText + e.key);
}
});
});
function renderInputBox(area) {
$(area).html('<div class="input" id="input1"></div>')
}
.input {
min-width: 200px;
min-height: 24px;
border: 1px solid rgb(153, 153, 153);
display: flex;
flex-direction: row;
padding: 1px;
}
.input:hover {
border: 1px solid rgb(49, 156, 255);
box-shadow: 0 0 1px rgb(49, 155, 255);
cursor: text;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id='answerSpace'></div>

How do I display a DIV when an anchor is active in HTML

How do I make the following code only display when the url ends in #404?
<!--404 code-->
<style>
.div1 {
width: 300px;
height: 100px;
border: 1px solid blue;
border-color: #ff0263;
box-sizing: border-box;
}
</style>
<body>
<font face="century gothic">
<div class="div1" name="div1">
<span id='close' style="cursor:pointer" onclick='this.parentNode.parentNode.parentNode.removeChild(this.parentNode.parentNode); return false;'>x</span> The vite you were looking for could not be found. <button class="button button5">What do I do now?</button></div>
</font>
<script>
window.onload = function() {
document.getElementById('close').onclick = function() {
this.parentNode.parentNode.parentNode
.removeChild(this.parentNode.parentNode);
return false;
};
};
</script>
<style>
#close {
float: right;
display: inline-block;
padding: 2px 5px;
background: #ccc;
}
#close:hover {
float: right;
display: inline-block;
padding: 2px 5px;
background: #ccc;
color: #fff;
}
</style>
<script>
$(document).ready(function() {
$("#id1").click(function() {
$(".div1").css('display', 'block');
});
});
</script>
I run this website called Vite - vite.website (Google: Vite Flash Engine). and if I could set it up so that when it reaches a 404, it will redirect to vite.website/#404. How do I make the following code visible only when the anchor, #404 is active?
Thanks!

This is css.but you can use jquery.
you can get the hash of the current url of the page and use if statement for your aim.

you can get the hash location of a webpage using
window.location.hash
So, maybe something like this can work (assuming you're using jQuery)
function hashIs404() {
var hash = location.hash.slice(-1);
if (hash === "404") {
//Display things
//$(selector).addClass(classname); recommended
} else {
//Hash is not 404
//$(selector).removeClass(classname); recommended
}
}
and call this function hashIs404(); by binding it to window.onload:
window.onload = hashIs404;
As for actually displaying it, use the if case and
$("head").append("<link rel='stylesheet' href='stylesheet-location.css');
Hope I could help if not entirely solving the issue :)

change size of div function doesn't work

I have a function that alters the size of a div when I click on it. Now I have to write the onclick command in my html page, but I want it to stand in the extern .js file.
Now in html:
<div id="box1" class="kaesten" onclick="changeSize('box1')"> Title 1 </div>
What I want:
<div id="box1" class="kaesten" > Title 1 </div>
Tried something in jquery but it didn't work:
function changeSize(id) {
var elem = document.getElementById(id);
var currentAbsoluteElem = document.getElementById('dummy');
var text = elem.innerHTML;
currentAbsoluteElem.innerHTML = text;
currentAbsoluteElem.setAttribute('style', 'display:block');
/*Extra styling neeed to be done here*/
}
var elems = document.getElementsByClassName('kaesten');
for (var i = 0; i < elems.length; i++) {
elems[i].onclick = function() {
changeSize(this.id);
}
}
var absoluteCl = document.getElementsByClassName('absoluteclass');
absoluteCl[0].onclick = function() {
console.log(document.getElementsByClassName('absoluteclass'))
document.getElementsByClassName('absoluteclass')[0].setAttribute('style', 'display:none');
}
$(document).ready(function() {
$('.kaesten').click(function() {
changeSize($(this).attr('id'));
});
});
.kaesten {
width: 240px;
height: 300px;
background-color: darkgrey;
background-position: center;
background-repeat: no-repeat;
text-shadow: 0px 0px 3px #000;
border: 5px solid #F0F8ff;
vertical-align: top;
text-shadow: 3px 3px 4px #777;
float: left;
margin-left: 30px;
}
.absoluteclass {
position: absolute;
background-color: darkgrey;
width: 600px;
height: 600px;
left: calc(30%);
display: none;
}
<div id="box1" class="kaesten">title1</div>
<div id="box2" class="kaesten">title2</div>
<div id="box3" class="kaesten">title3</div>
<div id="box4" class="kaesten">title4</div>
<div id="dummy" class="absoluteclass"></div>
I know it works in the fiddle, but I don't know why it doesn't work on my homepage without writing the function in the div's.

I guess the problem is that you are trying to assign the onclick event handler before the DOM is actually rendered and ready. My suggestion is to wrap your "initialization code" inside a $(document).ready() method. As follows:
$(document).ready(function() {
// Apply the on click event handlers here, using jQuery or not
// For instance:
$('.kaesten').click(function() {
changeSize($(this).attr('id'));
});
});

if you want to pass the id from jquery to your function you should do it like this:
$(function(){
$(".kaesten").click(function(){
changeSize($(this).attr("id"));
});
});

you can use .css in jquery
$(function(){
$(".kaesten").click(function(){
$(this).css({'width' : '600px' , 'height' : '600px'});;
});
});

Light box pop up form in jquery

Here is my code:
Please fill out my form.
<script>
var test = document.getElementById('test');
var win = null;
test.addEventListener('click', function(e) {
e.preventDefault();
e.stopPropagation();
win = window.open(test.href, null, 'height=823, width=680, toolbar=0, location=0, status=1, scrollbars=1, resizable=1');
return false;
});
window.addEventListener('click', function(e) {
if(win != null) {
win.close();
win = null;
}
});
</script>
This code works fine, but i need like to display as light box, for example please refer this site, http://fancybox.net/ ,, I am new to javascript, can anyone one help me to do this,
Any help would be appreciated, Thank you.

To start working with javascript, you would need a javascript library API. You must have heard about JQuery, this makes your work easier than regular Javascript codes. JQuery have lots of plugins especially for lightbox gallery that you are looking for. One useful lightbox plugin is Colorbox.
Start by importing the libraries to your header just like below. You also might need some css files for the colorbox themes.
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js">
<script src="../jquery.colorbox.js"></script>
Then start using colorbox just like below
Please fill out my form.
$(document).ready(function(){
$("#test").click(function(){ //on clicking the link above
$(this).colorbox({ //this would capture the url from the href
width:'500px', //width of the colorbox
height:'auto', //height of the colorbox
initialWidth:'500px', //initial width upon loading
initialHeight:'auto', //initial height upon loading
speed:0, //animation speed
opacity:0.2, //background opacity
overlayClose: true, //close upon clicking anywhere
title:'Your Form Title', //your form title name
onComplete: function(){
//do something when the colorbox loaded completely
}
});
})
});

Take a look on this following example. This is custom light box without any plugin:
Updated Fiddle
jQuery:
var lightBox = $('#lightbox'),
lightBoxContent = $('#lb-content');
var positionLightbox = function() {
var veiwWidth = $(window).width(),
lbContentMargin = (veiwWidth / 2) - 148,
lbContent = $('#lb-content');
lbContent.css({
'left' : lbContentMargin,
'top' : $(window).scrollTop() + 50 + 'px'
});
};
$('#test').click(function(e) {
e.preventDefault();
lightBox.fadeIn(function() {
lightBoxContent.show();
});
positionLightbox();
});
$('#lb-close').click(function() {
lightBox.hide();
lightBoxContent.hide();
});
/*hide click outside*/
$(document).mouseup(function (e)
{
if (!lightBoxContent.is(e.target) // if the target of the click isn't the container...
&& lightBoxContent.has(e.target).length === 0) // ... nor a descendant of the container
{
lightBox.hide();
lightBoxContent.hide();
}
});
CSS:
body {color: #fff; font-family: arial; font-family: arial;}
#lightbox {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
background-color: #000;
opacity: 0.8;
text-align: center;
display: none;
}
#lb-content {
color: #222;
height: 150px;
width: 260px;
border: 16px solid #222;
background-color: #fff;
position: relative;
text-align: center;
padding-top: 10px;
border-radius: 4px;
display: none;
}
#lb-close {
display: block;
height: 22px;
width: 25px;
background-color: red;
color: #fff;
position: absolute;
top: -25px;
right: -25px;
cursor: pointer;
text-align: center;
border-radius: 10px;
}
You can go for jQuery Plugin also:
http://lokeshdhakar.com/projects/lightbox2/
http://dimsemenov.com/plugins/magnific-popup/
http://www.jacklmoore.com/colorbox/