I am trying to learn Javascript and struggling! I have got my head around CSS & HTML to an ok level and have made a very basic file to help me learn basic Javascript functions. I just want to know if what I am doing is on the right path? I want to click on the different color boxes and change the main box.
I have made a fiddle link here: http://jsfiddle.net/Margate/mN9hs/
This should be self explanatory. Nothing that will ever be used I just want to learn with it!
After hours trying to work it out I am completely stuck as to why it is not working!
Thank you very much for any help / guidance....
<!DOCTYPE html><html><head><title> Learning Page!</title>
<style type="text/css">
#MainContent{position: relative; margin: 0px auto; top: 10px; border: 2px solid black; width: 500px; height: 250px;}
#ChangeThis{position: absolute; top: 10px; left: 50px; width: 400px; height: 100px; background-color: red; border: 2px solid black;}
#ColourBoxContiner{position: absolute; left: 99px; top: 120px; width: 302px; height: 102px; border: 1px solid black;}
#RedBox{position: absolute; top: 0px; left: 0px; width: 100px; height: 100px; background-color: red; border: 1px solid black; cursor: pointer;}
#YellowBox {position: absolute; top: 0px; left: 100px; width: 100px; height: 100px; background-color: yellow; border: 1px solid black; cursor: pointer;}
#GreenBox {position: absolute; top: 0px; left: 200px; width: 100px; height: 100px; background-color: green; border: 1px solid black; cursor: pointer;}
</style>
</head>
<body>
<div id="MainContent">
<div id="ChangeThis"></div>
<div id="ColourBoxContiner">
<div id = "RedBox" onclick="ChangeColorOne()"></div>
<div id = "YellowBox" onclick="ChangeColorTwo()"></div>
<div id = "GreenBox" onclick="ChangeColorThree()"></div>
</div>
</div>
<script>
function ChangeColorOne() {
document.getElementById('ChangeThis').style="background.color:orange";
}
function ChangeColorTwo() {
document.getElementById('ChangeThis').style="background.color:black";
}
function ChangeColorThree() {
document.getElementById('ChangeThis').style="background.color:blue";
}
</script>
</body>
</html>
When you are setting the background color you should be using "backgroundColor" without the period, like this:
function ChangeColorOne()
{document.getElementById('ChangeThis').style.backgroundColor="orange";}
function ChangeColorTwo()
{document.getElementById('ChangeThis').style.backgroundColor="black";}
function ChangeColorThree()
{document.getElementById('ChangeThis').style.backgroundColor="blue";}
BTW, Codecademy is a great place to go to learn Javascript. You can also use w3Schools as a reference.
The fiddle won't work (or won't for me on chrome) while you have the JavaScript set as onLoad, try No wrap - in <head> and you've a little syntax error in your JavaScript. Apart from that you were very close.
eg.
function ChangeColorOne() {
document.getElementById("ChangeThis").style.backgroundColor = "orange";
}
See this updated version on your fiddle: http://jsfiddle.net/mN9hs/1/
document.getElementById('ChangeThis').style="background.color:orange";
->
document.getElementById('ChangeThis').style.backgroundColor = "orange";
Stop using HTML onclick attributes and bind the click events through JS. The structure is yourElement.addEventListener("click", yourfunction); if your function is available in the scope. If you assign more than one, and you do not prevent your event from bubbling, all your observers will get the message.
Okay buddy here is your snippet in working condition.
Actually you need to do as:
function ChangeColorOne()
{document.getElementById('ChangeThis').style.backgroundColor="orange";}
function ChangeColorTwo()
{document.getElementById('ChangeThis').style.backgroundColor="black";}
function ChangeColorThree()
{document.getElementById('ChangeThis').style.backgroundColor="blue";}
ChangeColorOne();
ChangeColorTwo();
ChangeColorThree(); // call them all
Have a look. Hope it will help you =) .
Related
please help me.
I used to do some programming ages ago in PHP3 and now I am slowly getting on track again, using new features like jquery.
I made class for dealing with errors on the site, which works pretty fine, but now I have problem with simple peace of code which should deal with error itself. I made simple class function : (..part of the switch () )
default :
echo('<script type="javascript">
$("#infoLine").show ("clip", 300, "vertical");
$("#infoLine" ).text("'.$this->strErrorInfo.'");
$("#infoLine").addClass(".error");
</script>');
This part doesn't works Script part appears in html code, div with id infoLine is defined in the code like this:
<footer>
<div id="infoLine"></div>
</footer>
error generating code is:
<section id="main"><div style="float:none; position: relative;">
<?php
$error->intErrorOnLine = 15795;
$error->strErrorInfo = "This is really big error! Everything works fine";
$error->strErrorInFile = "some.html";
$error->showErrorLine();
css added to the code is like:
#infoLine {
display: none;
position: relative;
bottom: 2em;
width: 95%;
margin-right: auto;
margin-left: auto;
max-height: 50px;
}
.error {
position: relative;
bottom: 2em;
width: 95%;
margin-right: auto;
margin-left: auto;
max-height: 50px;
border-radius: 5px;
border-style: solid;
border-color: #bb0000;
border-width: 2px;
background: rgba(255, 150, 150, 0.8);
}
div msg will never appear and I don't know why. I know I do something really stupid, so please don't beat me :) - thank you very much for any help
So, I am trying to do a little browser game with Javascript (jQuery). I have already fighting system and now I am trying to do movement system, so you can move around the world.
Let's say that I want to open map and go to town and then to shop. What is the best way to open MAP window and close all other windows, then open TOWN window and close MAP window, then open SHOP window and close TOWN window?
I tried something, but it feels a little bad.. Is this a good way to do it or not?
<!DOCTYPE html>
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
</head>
<body>
<style>
.shopBox {
width: 300px;
height: 100px;
border: 1px solid black;
display: none;
}
.mapBox {
width: 500px;
height: 500px;
border: 1px solid black;
display: none;
}
.button {
width: 50px;
height: auto;
border: 1px dashed black;
margin: 5px;
padding: 2px;
cursor: pointer;
}
.shop {
width: 50px;
height: 50px;
border: 1px solid black;
position: relative;
left: 50px;
top: 100px;
cursor: pointer;
}
</style>
<script>
$(document).ready(function(){
$("#exit").hide();
$("#mapBtn").click(function(){
$("#map").show();
$("#exit").show();
$("#shop").hide();
$("#mapBtn").hide();
});
$("#shopImg").click(function(){
$("#map").hide();
$("#shop").show();
$("#exit").show();
});
});
</script>
<div class="button" id="mapBtn">Map</div>
<div class="mapBox" id="map">
This is your map
<div class="shop" id="shopImg">Shop!!</div>
</div>
<div class="shopBox" id="shop">Welcome to my shop!</div>
</body>
</html>
The code you have written looks functional. I don't see any problems. The only issue you will encounter is when you start introducing more details and complexity.
Just make sure you start making these into functions with annotations otherwise you will get lost.
An aside, consider the Unity Development Platform or Flash or consider using libraries which will save you a great deal of time: for example. Crafty
Otherwise, you'll learn as you'll continue coding. Focus on functionality and then optimization. Doing both with limited experience can be counterproductive.
Cheeers
you can select multiple elements at the same time like this
$("#mapBtn").click(function(){
$("#map, #exit").show();
$("#shop, #mapBtn").hide();
});
that will at least save you some space.
I've never heard of this before and I'm really confused.
The deal is that I have the following code,
Javascript
$(document).ready(function () {
showSideBar('sbselection_1');
$('.talkbubble').click(function () {
var sidebarSelector = $(this).find('.tbselector').val();
showSideBar(sidebarSelector);
});
$('.clickables').on('click','.talkbubble',function () {
$(this).siblings('.talkbubble').removeClass('clicked');
$(this).addClass('clicked');
});
});
function showSideBar(selector) {
$('.sidebarContent').hide();
$('.sidebarContent.' + selector).show();
}
CSS
.sidebar{
position: absolute;
background-color: rgb(153,153,153);
width: 250px;
height: 300px;
}
.sidebarcontent{
display:none;
overflow:hidden;
}
.clickables {
position: absolute;
left: 270px;
}
.talkbubble {
background: white;
color: rgb(0,0,0);
font-family: Rockwell, Garamond, "MS Serif", "New York", serif;
font-size: 12px;
height: 40px;
margin-top: 1%;
margin-bottom: 20px;
position: relative;
width: 130px;
z-index: 5;
}
.talkbubble:before {
border-top: 10px solid transparent;
border-right: 10px solid white;
border-bottom: 10px solid transparent;
content:"";
height: 0;
position: absolute;
right: 100%;
top: 10px;
width: 0;
}
.clicked {
background:rgb(153,153,153);
}
.clicked:before {
border-right-color:rgb(153,153,153);
}
.talkbubble:hover{
background-color: rgb(112,112,112);
color: rgb(255,255,255);
}
.talkbubble:hover:before {
border-right-color: rgb(112,112,112);
}
.thumbnail {
height: 33px;
width: 30px;
float: left;
position: absolute;
margin: 4px;
z-index: 2;
left: 2px;
top: 0px;
}
.words {
height: 24px;
width: 150px;
position: absolute;
float: right;
left: 40px;
top: 10px;
}
#orangetriangle{
border-top:25px solid green;
height: 0;
position:absolute;
width: 0;
z-index:3;
border-right: 25px solid transparent;
height: 0;
position:absolute;
width: 0;
z-index:5;
border-top-color: rgb(255,138,0);
}
#dkpurpletriangle{
border-top:25px solid green;
height: 0;
position:absolute;
width: 0;
z-index:3;
border-right: 25px solid transparent;
height: 0;
position:absolute;
width: 0;
z-index:5;
border-top-color: rgb(120,3,105)
}
#powderbluetriangle{
border-top:25px solid green;
height: 0;
position:absolute;
width: 0;
z-index:3;
border-right: 25px solid transparent;
height: 0;
position:absolute;
width: 0;
z-index:5;
border-top-color: rgb(99,89,288);
}
HTML
Event 1
<div class="talkbubble">
<input type="hidden" class="tbselector" value="sbselection_2" />
<div class="thumbnail">
<img src="images/thumbnail1.png" height="33" width="30" align="middle" />
</div>
<div class="words">Event 2</div>
</div>
<div class="talkbubble">
<input type="hidden" class="tbselector" value="sbselection_3" />
<div class="thumbnail">
<img src="images/thumbnail1.png" height="33" width="30" align="middle" />
</div>
<div class="words">Event 3</div>
</div>
</div>
And you can see it on this fiddle https://jsfiddle.net/petiteco24601/rhjw8uzm/9/
Which is great and beautiful and does exactly what I want it to do.
Next I put it on a html page that I put together, you can see it here:
http://www.emich.edu/dining/draft/index.html
Again, this button display is working wonderfully and doing exactly what I want it to do.
Then I had to go through a specific server and use their system- which I'm a tad unfamiliar with and really forces you to separate everything, not just by folders but essentially you have two libraries working together to pull together the appropriate css, javascript, and html. As such, you can see that I do have a lot (against my better judgement) of inline styles and inclusion of javascript at the header rather than in a separate sheet. Nonetheless
http://webstage.emich.edu/dining-new/index.php
If you hit "inspect source" you see what I'm seeing when I'm working on it. The click-able display looks almost identical to the one on jsfiddle- but you hit Inspect Element and you see that all the <div class="sidebarContent"> is embedded inside each other. As such, it won't display the appropriate pictures to fill the <div class="sidebar"> area.
Any ideas??? Please and thank you!
Looks like the problem is you have used the self closing syntax for the inner divs of .sidebarContent elements like <div id="eetriangle" /> instead of using <div id="eetriangle"></div>.
Demo: Problem, Solution
What are all the valid self-closing elements in XHTML (as implemented by the major browsers)?
If you have noticed clearly in both the .clickables you have the below code
https://jsfiddle.net/petiteco24601/rhjw8uzm/9/
http://webstage.emich.edu/dining-new/index.php
.clickables {
position: absolute;
left: 270px;
}
in case of your which you dont have just add the below and it works identical :)
.clickables {
margin-left: auto;
position: absolute;
left: 333px;
}
So I went through and did some research on the server we're using. It turns out that I was correct in thinking that there was something wrong with how the library was parsing the information. Specifically, when the library puts everything together, it doesn't know what to do with an empty box and therefore immediately starts embedding other boxes inside of it- effectively destroying the code. Easy fix: just add an html comment inside of each empty box, and the program believe the is populated so it leaves it alone.
Thank you everyone for your help and suggestions!
I am very new to Javascript. I have been looking into using Javascript to edit css style properties. I have searched the web and looked at a lot of different problems. Even with all of that, it is probably my inexperience as to why I can't figure out what is wrong with my code. What adds to the problem is that there are so many ways to do this. Anyway here are the specifics.
What I want it to do:
When someone clicks on the link in the code, I want the hidden DIV (which will just be near the top of my waiting to be called on) to have its visibility switched to visible so as to create a new layer on the page.
My code:
<html>
<head>
<script language="javascript">
function newwindow() {
var showme = document.getelementbyid("testing");
showme.style.visibility = "visible";
}
</script>
</head>
<body>
Show me my hidden layer
<div id="testing" style="position: absolute; visibility: hidden; left: 50%; top: 50%;
border: 1px solid darkblue; width: 400px; height: 300px; line-height: 300px;
text-align: center; vertical-align: middle;
margin-top: -150px; margin-left: -200px; background: lightgray">HELLO!!!</div>
</body>
</html>
Now, I know there are a lot of ways to do this. But can someone show me what to tweak in the code I gave to make the way I am writing this work? Thanks so much for your time.
It is document.getElementById not document.getelementbyid
Working Demo
use this code
<html>
<head>
<script language="javascript">
function newwindow() {
var showme = document.getElementById("testing");
showme.style.visibility = "visible";
}
</script>
</head>
<body>
Show me my hidden layer
<div id="testing" style="position: absolute; visibility: hidden; left: 50%; top: 50%;
border: 1px solid darkblue; width: 400px; height: 300px; line-height: 300px;
text-align: center; vertical-align: middle;
margin-top: -150px; margin-left: -200px; background: lightgray">HELLO!!!</div>
</body>
</html>
I try to achieve something like the Facebook does when you type #<NAME_OF_A_FRIEND> in a reply. After you choose a friend, the name of that friend is highlighted with a blueish background, so you know it's a separate entity in that text.
I've "inspect element"-ed that textarea and there is no div placed on top of the textarea.
Can anyone give me a clue about how that is done ?
I have a completely different approach to this issue using HTML5. I use a div with contentEditable="true" instead of a textarea (wich I was using until I got stuck with the same problem you had).
Then if I want to change the background color of a specified part I just wrapp that text with a span.
I am not 100% sure if it is the correct approach as I am a newbie in HTML5 but it works fine in all the browsers I have tested it (Firefox 15.0.1 , Chrome 22.0.1229.79 and IE8).
Hope it helps
See this example here. I used only CSS and HTML... The JS is very more complex for now. I don't know exactly what you expect.
HTML:
<div id="textback">
<div id="backmodel"></div>
</div>
<textarea id="textarea">Hey Nicolae, it is just a test!</textarea>
CSS:
#textarea {
background: transparent;
border: 1px #ddd solid;
position: absolute;
top: 5px;
left: 5px;
width: 400px;
height: 120px;
font: 9pt Consolas;
}
#backmodel {
position: absolute;
top: 7px;
left: 32px;
background-color: #D8DFEA;
width: 53px;
height: 9pt;
}
The textarea has background-color: transparent; the extra div you're looking for is behind it, with the same text and font as the textarea, but different colours.
A short example to illustrate the point:
<!DOCTYPE html>
<html>
<head>
<title>Demo</title>
<style>
* { font-family: sans-serif; font-size: 10pt; font-weight: normal; }
.wrapper { position: relative; width: 400px; height: 400px; outline: solid 1px #666; }
.wrapper > * { position: absolute; top: 0; left: 0; height: 100%; width: 100%; margin: 0; padding: 0; }
.highlighter { background-color: #fff; color: #fff; }
.highlight { background-color: #9ff; color: #9ff; }
textarea { background-color: transparent; border: 0; }
</style>
</head>
<body>
<div class="wrapper">
<div class="highlighter">
This <span class="highlight">is a</span> demonstration.
</div>
<textarea>
This is a demonstration.
</textarea>
</div>
</body>
</html>
Of course, this does not update the special div as you type into the textarea, you need a lot of JavaScript for that.
hi you can check this jquery autosuggest plugin similar to facebook .I have used this to achive the same functionality you required
http://www.devthought.com/2008/01/12/textboxlist-meets-autocompletion/
I would suggest changing the text you want to assign a background inline to to display: inline-block; background-color: #YOURCOLOR;. This should do exactly what you want it to do without all the complexities of some of the above answers.
Ultimately your CSS should look something like this:
.name {display: inline-block; background-color: purple;}
Then add some sort of event listener in jQuery (not sure how you're identifying that it is a name) and inside that conditional put:
$(yourNameSelectorGoesHere).addClass(".name");