I am trying to change the src= image of a parent in a nested ul li when I click on a link. Below is my code. I know how to change the src= with javascript, but I don't know how many tiers I need to navigate up to change the src= image. Example: I want to change src="test.png" when I click on Question1.Answer1.
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Untitled Document</title>
<style>
ul {
list-style: none;
margin: 0;
padding: 0;
}
li {
/*background-image: url(/images/page.png);*/
background-position: 0 1px;
background-repeat: no-repeat;
padding-left: 20px;
}
a {
color: #000000;
cursor: pointer;
text-decoration: none;
}
a:hover {
text-decoration: underline;
}
.hidden {
display:none;
}
</style>
<script src="/js/jquery-1.11.1.js"></script>
<script type="text/javascript">
function addLine(what) {
$("#" + what).append('<li>URL to uploaded document</li>');
};
function myToggle(what){
$("#" + what).toggleClass('hidden');
};
function deleteLine(what) {
$(what).parent().children().remove();
}
</script>
</head>
<body>
<ul>
<li class="folder">
Test
<ul class="hidden" id="Test1">
<li class="folder"><img src="test.png">
Test1-2
<ul class="hidden" id="Test1-2">
<li>
This is Question 1
<ul id="Question1"><li onClick="deleteLine(this)"> Questoin1.Answer1</li></ul>
</li>
<li>
This is Question 2
<ul id="Question2"></ul>
</li>
<li>
This is Question 1
<ul id="Question3"></ul>
</li>
</ul>
</li>
</ul>
</li>
</ul>
</body>
</html>
object with style property display or visibility: if hidden so no user-action-events possible.
Remove an object == remove from HTML DOM, so no user-action-events possible.
Add an object to HTML DOM so document must be new render. Same if object.style.display was changed.
display changes HTML DOM.
$("#" + what).append('URL to uploaded document'); this changes HTML DOM.
NOT same if object.style.visibility was changed: Visibility must have an exist object in HTML DOM.
please use
so, var imgPointer=document.getElementById("imgID");
put this pointer in an event handler to change imgPointer.src .
imgPointer (value if ID) is a pointer (value) relative to document an not to .
inside of addLine() change imgPointer.src .
Related
I am new to JavaScript and using an external file to populate my navigation bar. I would like my navigation tabs to change size/position using my "onTab" class when clicked, and stay that way as long as that navigation tab is supporting the active page. How would the JavaScript go?
I have tried several different onClick and add/remove functions to get this to happen, but apparently I don't know the proper JavaScript series and terms needed for this particular action, yet.
<div id="page-navigator" class="nav-tabs">
<ul class="tabs">
<li class="grow-xs onTab">Tab A</li>
<li class="grow-xs" >Tab B</li>
<li class="grow-xs" >Tab C</li>
<li class="grow-xs" >Tab D</li>
<li class="grow-xs" >Tab E</li>
<li class="grow-xs" >Tab F</li>
</ul>
</div>
EDIT:
I know this raw attempt is hilariously wrong, but I "think" I am looking for something like this:
identify current page url.
get.elementByClassName "tag"
look for class "tag" href that is same as URL
if - class tag is same as page url, add onTab class
$(document).ready(function ($) {
function getURL() {
window.location.href("url")
});
var y = document.getElementsByClassName("tag");
if (x.a[href="window.location.href"]); === y {
toolbar.classList.add('onTab')
}
});
Here is a possible solution, based on your approach:
Any HTML pages A, B, C [ files: page_A.html / page_B.html / page_C.html ]
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>page A </title> <!-- or B / C-->
<script src="navigation.js" defer></script>
<link rel="stylesheet" href="style.css">
</head>
<body>
<h3> this is page A </h3> <!-- or B / C-->
<p>Blah blah bla....</p>
</body>
</html>
JS code: [ file: navigation.js ] (witch use backQuotes)
const myMenu = document.createElement('menu')
;
myMenu.innerHTML = `
<li> go to page A </li>
<li> go to page B </li>
<li> go to page C </li>`
;
document.body.prepend(myMenu)
;
myMenu.querySelectorAll('li > a').forEach(elmA =>
{
if ( elmA.pathname === window.location.pathname )
{
elmA.classList.add('onTab')
}
})
I have also done a CSS: [ file: style.css ]
body {
font-family : Arial, Helvetica, sans-serif;
font-size : 16px;
}
menu {
list-style : none;
padding : 0;
margin : 1rem 0 2rem .2rem;
width : fit-content;
}
menu > li {
width : fit-content;
}
menu > li:not(:first-of-type) {
margin-top : .2rem;
}
menu a {
display : block;
width : 10em;
padding : .2rem .6rem;
background : darkgray;
}
menu a.onTab {
background : coral;
color : darkblue;
cursor : default;
pointer-events : none;
}
menu a:not(.onTab):hover {
background-color: cadetblue;
}
menu a { text-decoration: none; color: black; }
menu a:visited { color: black; }
I am making a basic online editing outline for coursework. I want to include a tree-view functionality, that expands and collapses the parent node with one click. However, I can seem to get it to work.
<!DOCTYPE html>
<html>
<head>
<title>Editor</title>
<style>
.caret {
cursor: pointer;
user-select: none;
}
.active {
display: block;
}
</style>
</head>
<body>
<div id="inputArea">
<div id="bulletPoints" contenteditable="true"></div>
<ul class="newUl">
"header"
<li class="newLI">textContent</li>
<ul>
<li class="newLi">okay</li>
<ul>
<li class="newLi">yes</li>
</ul>
<li class="newLi">no</li>
</ul>
</ul>
</div>
<script>
let toggler = document.getElementsByClassName("newLi");
let i;
for (i = 0; i < toggler.length; i++) {
toggler[i].addEventListener("click", function() {
this.parentElement.querySelector(".newUl").classList.toggle("active");
this.classList.toggle("newLi-down");
});
}
</script>
</body>
</html>
I have been searching the Internet for days with no luck. I need a modal window to upload a file and pass additional values to the script. The modal window needs to open when the user clicks on "This is Question #". Below is my current script. Any help or direction would be greatly appreciated.
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Untitled Document</title>
<style>
ul {
list-style: none;
margin: 0;
padding: 0;
}
li {
/*background-image: url(/images/page.png);*/
background-position: 0 1px;
background-repeat: no-repeat;
padding-left: 20px;
}
a {
color: #000000;
cursor: pointer;
text-decoration: none;
}
a:hover {
text-decoration: underline;
}
.hidden {
display:none;
}
</style>
<script src="/js/jquery-1.11.1.js"></script>
<script type="text/javascript">
function addLine(what) {
$("#" + what).append('<li>URL to uploaded document</li>');
};
function myToggle(what){
$("#" + what).toggleClass('hidden');
};
</script>
</head>
<body>
<ul>
<li class="folder">
Test
<ul class="hidden" id="Test1">
<li class="folder">
Test1-2
<ul class="hidden" id="Test1-2">
<li>
This is Question 1
<ul id="Question1"></ul>
</li>
<li>
This is Question 2
<ul id="Question2"></ul>
</li>
<li>
This is Question 1
<ul id="Question3"></ul>
</li>
</ul>
</li>
</ul>
</li>
</ul>
</body>
</html>
Try using Ravishanker Kusuma's jQuery File Upload Plugin, here:
http://hayageek.com/docs/jquery-upload-file.php
To make the dialog modal, you just need to create a div like this:
<div id="myOverlay"></div>
and style it like this:
#myOverlay {height:100%;width:100%;position:absolute;top:0px;left:0px;overflow:hidden;background:black;opacity:0.5;z-index:10;}
The overlay DIV is initially hidden (by appending display:none; to the end of the css above). When you want it visible, you remove the display:none;. When visible, it will overlay all the rest of the page, with the exception of your upload form which must have a higher z-index value.
Making a dialog modal really is that simple.
So, using Ravi's code, you just show a DIV like this:
See This jsFiddle Demo
HTML:
<link href="http://hayageek.github.io/jQuery-Upload-File/uploadfile.min.css" rel="stylesheet">
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script src="http://hayageek.github.io/jQuery-Upload-File/jquery.uploadfile.min.js"></script>
<div id="myOverlay"></div>
<div id="box">
<div id="box-inside-div">
<div id="fileuploader"></div>
</div><!-- #box-inside-div -->
</div><!-- #box -->
<div id="main">
<h1>Upload a File Page</h1>
<p>To upload a file, click the button below</p>
<input type="button" id="myButt" value="Upload" />
</div>
CSS:
/* #myOverlay on two lines for readability in this SO answer */
#myOverlay {height:100%;width:100%;position:absolute;top:0px;left:0px;}
#myOverlay {background:black;opacity:0.5;z-index:10;display:none;}
#box {position:absolute;top:150px;left:125px;height:200px;width:550px;background:white;z-index:15;display:none;}
#box-inside-div{margin-left:20px;margin-top:30px;}
jQuery/javascript:
$(document).ready(function() {
$('#myButt').click(function () {
$('#myOverlay').show();
$("#box").show();
$("#fileuploader").uploadFile({
url: "upload_recv.php",
fileName: "myfile",
onError: function(files,status,errMsg){
/* onError because (1) jsFiddle cannot do ajax */
/* AND (2) there is no upload_recv.php file! */
$('#myOverlay').hide();
$('#box').hide();
alert('The file is now on the server');
}
});
});//END mybutt.click
});
When the upload is completed you would hide both the #myOverlay DIV and the #box DIV (which contains the fileuploader DIV). In the jsFiddle example, to determine when the upload has finished, I used the onError event (because jsFiddle cannot do either ajax or the back end PHP processing). You would probably use the onSuccess or afterUploadAll events.
For more information on how to do that, see the demos on the HayAGeek page.
And finally . . . how to process the file on the server once uploaded?
This is done by the PHP processor file you specified in the jQuery code above. In the above example, we named it upload_recv.php
On the HeyaGeek demo page, see Server Side at the top right.
This question already has an answer here:
Is there a way to combine $(this) with :nth-child?
(1 answer)
Closed 8 years ago.
My html code is as follows: (info on bottom)
<!DOCTYPE html>
<html>
<head>
<title>My Site</title>
<link type='text/css' rel='stylesheet' href='style/style1.css'></link>
<script type='text/javascript' src='scripts/jquery-2.0.0.min.js'></script>
<script type='text/javascript' src='scripts/script1.js'></script>
</head>
<body>
<div id="title">
<h1>Welcome to My Site</h1>
</div>
<div id='menu_Bar'>
<div id='home' class='selector'>
<div class='back'>
<ul class='empty'>
<li>Home</li>
<div style='display: none'>
<li><a href=''>option 1</a></li>
<li><a href=''>option 2</a></li>
<li><a href=''>option 3</a></li>
<li><a href=''>option 4</a></li>
<li><a href=''>option 5</a></li>
</div>
</ul>
</div>
</div>
</div>
</body>
</html>
My jQuery is:
$(document).ready(function() {
$('.selector').mouseenter(function (){
$(this.'div ul div').slideToggle('slow');
});
Now I know the last part won't work (because I would be asking if it did). But I'm sure you see what I'm trying to do. I'm trying to make it so when the selector is hovered over it will open its set of links. I almost was going to use .options for the second part, but realized it would change (or effect) all in same class, which won't allow for similar buttons to be placed on the sides. So how would someone use the parent to affect the child of the parent?
The css:
div {
border: 1px solid black;
}
.empty {
list-style: none;
}
.options {
display: none;
background-color: lightblue;
}
.selector {
background-color: transparent;
}
It shoud be
$(document).ready(function() {
$('.selector').mouseenter(function (){
$(this).find('> div > ul > div').slideToggle('slow');
});
});
Demo: Fiddle
On the "home" page I want to have a logotype and a menu on a #banner div (which will then be there throughout the whole site) and on a #content" div to have an image. All these divs are inside a #container" div. The menu has 3 buttons.
I would like that on mouseover event each button displayed image on the #content div changes accordingly. So basically, when hover button1, the image on #content will change from background.jpg to background1.jpg. The event of mouseover on button2 will change it to background2.jpg etc. When buttons are not hovered over, the image should revert to the original background.jpg.
HTML:
<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<title>E.S.T.</title>
<link href="_css/layout.css" rel="stylesheet" type="text/css">
<link href="SpryAssets/SpryMenuBarHorizontal.css"
rel="stylesheet"
type="text/css">
<script src="SpryAssets/SpryMenuBar.js" type="text/javascript"></script>
</head>
<body>
<div id="container">
<div id="banner">
<div id="logo">E.S.T.</div>
<div id="menu">
<ul id="MenuBar1" class="MenuBarHorizontal">
<li id="button1">Biography</li>
<li id="button2">Albums</li>
<li id="button3">Links</li>
</ul>
</div>
</div>
<div id="content">
<img id="back0" src="_img/background.jpg">
<img id="back1" src="_img/back_bio.jpg">
</div>
</div>
<script type="text/javascript">
var MenuBar1 = new Spry.Widget.MenuBar("MenuBar1,
{
imgDown:"SpryAssets/SpryMenuBarDownHover.gif",
imgRight:"SpryAssets/SpryMenuBarRightHover.gif"
});
</script>
</body>
</html>
CSS:
#charset "UTF-8";
#import url("../_fonts/Days/fontstylesheet.css");
body {
background-color:#CCC;
font-family:Days;
font-size:100%;
}
#container {
width:850px;
max-height: 650px;
margin: 0 auto;
padding-left: 10px;
padding-right: 10px;
overflow: hidden;
font-family: Days;
}
#logo {
position:relative;
font-size: 4em;
color:white;
float:left;
}
#menu {
float:right;
margin-top:40px;
}
I have tried several different things but I manage only to change the background image from the buttons themselves. From searching around the web i think this should be done with JS, but i have no idea how to do it.
This can be solved entirely with CSS, but first let me give you a tip:
Combine background.jpg and background1.jpg into one image, and rather change the background position. This way, there won't be any delay from when the user hovers over the menu element to when the picture is displayed, and you'll have fewer files to keep track of.
Say we let #button1 be 100px tall. We make an image 200px tall containing the normal state image on top, and the hover image on the bottom. This is called a sprite.
#button1 {
height: 100px;
background-image: url("background.jpg");
}
#button1:hover {
background-position: 0 -100px;
}
This moves the background image, showing the hover version.
For convenience, I'll answer this question using the jQuery javascript library.
If I understand you right, you would like #content to contain an image that changes when you hover over the menu items, and the image should reflect the item currently hovered.
In stead of including every image in the body, I'll try an approach using the data attributes.
HTML The relevant parts
<ul id="MenuBar1" class="MenuBarHorizontal">
<li id="button1" data-img="background.jpg">Biography</li>
<li id="button2" data-img="back_album.jpg">Albums</li>
<li id="button3">Links</li>
</ul>
<div id="content">
<img id="back"
src="_img/background.jpg"
data-original="_img/background.jpg"
alt="e.s.t" />
</div>
JavaScript
$(document).ready(function() {
$("#MenuBar1 li").mouseover(function() {
$("#back").attr("src", $(this).data("img"));
}).mouseout(function() {
$("#back").attr("src", $("#back").data("original"));
});
});
So now we store the original image path with the image tag in its data-original attribute, and the path to the :hover image is stored with the menu element.
See this Fiddle for a demo!
Give an id on your image like: id=idimage
You can use jQuery like this:
<script type="text/javascript">
$(document).ready(function(){
$("#MenuBar1 li").mouseover(function(){
var id=$(this).attr('id');
var number = id[id.length-1];
$("#id_image").attr("src","_img/background"+number+".jpg");
});
});
</script>