Change Text Align On Click - javascript

I am looking to have a button that shifts the text alignment to the left side whenever it is clicked. This is the function I currently have that doesn't seem to be working:
function myFunctionLeft() {
document.getElementById("myAnchor").style.left = "-15px";
document.getElementById("myAnchor").style.align = left;
Is there a different way I should be trying to move the text align to the left?

left, right, top, and bottom, only works if the element is position: absolute || relative. Just make #myAnchor position: relative.
See here for more info on positioning.

align is not a valid CSS property. Instead of .style.align = left;, you should be using .style.textAlign = "left";.

There are a few ways to go about something of this proportion, and the best (In my honest opinion) is to make a CSS class to manipulate values. I would go about doing this in using the class .align-left. The CSS would go something like the below:
.align-left {
text-align: left;
left: -15px;
}
And you could toggle the class via the following Javascript:
document.getElementById("myAnchor").classList.toggle("align-left");
This should do what you were attempting to achieve with the above code. I don't know if myAnchor is what you are aligning or if it is the button or what, but you should be able to use my code for whatever.
Anyways, I hope it helps, try it out and see how it goes. Try the developer tools equipped in your browser to see if there is issue in your inclusion and good luck!

Related

Bring element on top of modal backdrop

I am trying to build a guide functionality for my application. As a part of this functionality, it is expected that a tooltip is shown next to the target HTML element and this target element is brought on top of modal backdrop that appears together with the tooltip.
The problem is that after significant effort I still cannot make HTML element show on top of the modal backdrop. Simple tricks like z-index: 10000 !important; position: relative do not help. Also changing parent elements' z-index by disabling it in Firefox Developer Tools (and leaving z-index: 10000 !important; position: relative for the target element that is supposed to be on top of the modal backdrop) does not help.
HTML of the application is quite complex with many elements. But I want to be able to "highlight" any given element by bringing it on top of the modal overlay knowing only its id. Is there an easy way to do that with JavaScript/React?
Hopefully there is a way to do this without modifying the DOM, which would be highly preferable.
UPD: Code demo - press hat button to show guide/tooltips
Remove the z-index from .form-wrapper and apply relative position with z-index for the targetted elements.
I did this by adding
d.classList.add("tooltip-active-element");
to App.js#77
Also added the class to the css file:
.tooltip-active-element {
position: relative;
z-index: 2;
background: red;
}
and removed the z-index value from other classes, the key one being the .form-wrapper class.
Working demo: https://codesandbox.io/s/tooltip-z-index-forked-fg9pt

How to set right property of loadgo.js to left?

May i know that how can i set the right property of .loadgo-overlay to left? I followed all the instruction to implement the loadgo animation. However, the animation is appeared on the right hand side instead of appear together with the image which is left hand side. I even tried to modify the values to left:0px; right:none; in loadgo.js file when the code is trying to create a <div>, though the style of the loadgo-overlay has added the left property but the right property still become to 0px even tho i changed to none. My expected result will be the animation to appear together with the image on left hand side.
partial of loadgo.js:
var overlayTemplate = '<div class="loadgo-overlay" style="background-color:%bgcolor%;opacity:%opacity%;width:%width%px;height:%height%px;position:absolute;"></div>';
var overlayWithOptions =
overlayTemplate
.replace('%bgcolor%', pluginOptions.bgcolor)
.replace('%opacity%', pluginOptions.opacity)
.replace('%width%', _w)
.replace('%height%', _h);
$overlay = $(overlayWithOptions);
Here,is my fiddle to test the code.
https://jsfiddle.net/4vfxfjxr/5/
Expected result
Use the direction attribute and set to to rl for left to right animation, It should look like,
$(document).ready(function() {
$('#header').loadgo(
{
'direction': 'rl'
}
);
$('#header').loadgo('loop', 20);
});
Working Demo is available here: https://jsfiddle.net/qx835keg/1/
Hope this helps!
If you add this CSS, the animation appears in the logo/image on the left side:
.loadgo-overlay {
left: 0px;
right: auto;
}
https://jsfiddle.net/4vfxfjxr/2/
Instead of adding CSS on .loadgo-overlay, Should add CSS on .loadgo-container. Because loadgo-overlay's parent is loadgo-container. For more information please refer to jsfiddle as provided.
.loadgo-container{
margin: 0 auto;
float: left;
}
https://jsfiddle.net/4vfxfjxr/9/

How to input a CSS class with JavaScript to affect another function

I have gone at a lot of informative sites in order to find answer but no luck so far. Thus now asking here.
CSS Class
.toppy {
:-webkit-full-screen {position: relative; top: -1310;}
:-moz-full-screen {position: relative; top: -1310;}
:-ms-fullscreen {position: relative; top: -1310;}
fullscreen {position: relative; top: -1310;}
}
JS Input
window.onscroll = function() {mss()};
function mss() {
var posi = document.body.scrollTop;
document.getElementById("toppy").style.top = -posi;
}
Depending on a position on a web page, this should give the value (posi). Negatived as CSS works on that way, and trying to update CSS with style(top) value (posi). However, no updating.
JS into which CSS influences
function FullScreen() { .... code .... }
CSS affects to this. If CSS has defined without class .toppy, function FullScreen works nicely opening full screen with the CSS's pre-set values (-1310) at the position downwards from the top.
But why is CSS's style property top not being updated by JS input function and therefore changing the position of the FullScreen to open at? My goal is to obtain the full screen to be opened at its current position on page. Some browsers do this automatically, some do not. Thus needing coding.
Or does one have to define a variable in css (e.g. var(--posi)) and proceed on this way but I do not have a real clue how to do that?
Many thanks for replies!
Update:
Thanks for the points. Valid ones. However, as the problem remains, I think the issue here is how to link a css to certain js being the case paricularry with this fullscreen. If I had two identical js fullscreen (expect function name), how would I define above kind of css to one js and another css to another js? As for me, it seems that css for fullscreen is (defined as above) not accepting any id or class tags, or I do not know how to link id to js? Syntaxing? Regards!

Interactive HTML webpage

EDIT: Thanks for a lot of great examples on how to solve these. I cant decide between who to accept yet, but I will go though all examples and see which I like the most. Great feedback guys! =D
I normally do these kind of things in flash, but this time it has to be compatible with mac, iPads and all those units too.
So, what do I need help with?
I've got a picture, with some "hotspots" on. I want to be able to click any of those hotspots to show some information.
This should be fairly basic and easy to achieve, but since I've never done this in html before I have to ask you guys =)
So, what would be the best way to do this? It have to be compatible with any browser and device, and it doesnt need to be very advanced. If it's possible to add effects to the box (sliding out, fading in, or anything like that) then thats a nice bonus, but not something I need.
Any help would be great!
BREAKDOWN:
I have a background image with some "hotspots" (numbers 1 and 2 in my example). The users should be able to either hover the mouse over any of these or click it to get more information, as seen in picture #2
This is that happens when you hover/click any of these hotspots.
Text and image is displayed inside a nice little info box.
If the user clicks "more information" it will open up even further to display more information if available. Like in this img:
I don't think the Javascript approach is really necessary here. I created a little CSS-only mock-up for you on JSBin.
Basically the point is that you enclose the image in a relatively positioned div, then absolute position the hotspots inside the same div. Inside the hotspots divs you will have the more info elements, showing only on :hover of their parents.
This makes it simple, and far more accessible.
Update: cropping the image equally from both sides
If you want to keep the image centered and still not use any javascript, you could set the required image as a background-image of the container, and setting its background-position parameters to center center.
You would have to make sure that the width of this div is set to the width of your image, and the max-width to 100%, so that when the window gets resized below the image width it stays at the center.
Now, a problem that I encountered here is how to make the hotspots stay center relatively to the image. I solved it this way:
I created a wrapper div for the hotspots with these characteristics:
margin: 0 auto;
position: relative;
width: 0px;
This basically makes sure that the wrapper div finds the center of our image. Then, you would position the hotspots relatively to the top-center position of the image, instead of the top-left as a starting point.
Then you have what you are looking for.
Working demo
Here's another approach, and in my opinion far superior to using a map or excessive JS. Place <div> elements on top of the element with the background-image and have HTML and CSS do the heavy lifting for you.
See it on JSFiddle
HTML
The HTML should seem pretty each enough to understand, we create <div>s with the class hotspot and rely on certain things being present. Namely .text (to show digit), .hover-popup (to show on hover) and .click-popup (which is inside .hover-popup and is shown when clicked).
<div id="hotspot1" class="hotspot">
<div class="text">1</div>
<div class="hover-popup">
I was hovered!
<div class="click-popup">
I was clicked on!
</div>
</div>
</div>
<div id="hotspot2" class="hotspot">
<div class="text">2</div>
<div class="hover-popup">
I was hovered!
<div class="click-popup">
I was clicked on!
</div>
</div>
</div>
CSS
This is where most of the magic happens, see the comments for further explanation.
/* These two position each hotspot */
#hotspot1 {
left:15%; /* we could use px or position right or bottom also */
top:20%;
}
#hotspot2 {
left:35%;
top:25%;
}
/* General styles on the hotspot */
.hotspot {
border-radius:50%;
width:40px;
height:40px;
line-height:40px;
text-align:center;
background-color:#CCC;
position:absolute;
}
.hotspot .text {
width:40px;
height:40px;
}
/* Show the pointer on hover to signify a click event */
.hotspot .text:hover {
cursor:pointer;
}
/* hide them by default and bring them to the front */
.hover-popup,
.click-popup {
display:none;
z-index:1;
}
/* show when clicked */
.hotspot.clicked .click-popup {
display:block;
}
/* show and position when clicked */
.hotspot:hover .hover-popup {
display:block;
position:absolute;
left:100%;
top:0;
width:300px;
background-color:#BBB;
border:1px solid #000;
}
JavaScript (with jQuery)
Unfortunately you're going to have to use some JavaScript for the clicking part as CSS doesn't have a 'clicked' state (outside of hacks with checkboxes). I'm using jQuery because it's dead easy to do what I want.
$(document).ready(function () {
$('.hotspot').click(function () {
$(this).toggleClass('clicked');
});
});
Creating the arrow
Over at css-tricks you can find a tutorial for attaching an arrow to a element using the :before and/or :after pseudo-elements. You can even 'simulate' a border around them by placing the :after element on top of the :before. But yea, lots of resources on how to do this.
You should be able to use the onclick or OnMouseOver event in the map area (define the href as "").
An example using OnMouseOver is here: http://www.omegagrafix.com/mouseover/mousimap.html
Give a class for that image in html (Ex: imgclass). And in javascript(using jquery), build that hover box in html format and bind it to 'mouseover' event of that image.
For example:
function bindhtmltoimage() {
myimg = $('body').find('.imgclass');
divSlot.each(function (index) {
$(this).bind('mouseover', function () {
try {
//position the hover box on image. you can customize the y and x axis to place it left or right.
var x = $(this).offset().left;
var y = $(this).offset().top;
var position = $(window).height() - ($("#divHover").height() + y);
var widthposition = $(window).width() - ($("#divHover").width() + x);
if (position < 0 || widthposition < 0) {
if (position < 0) {
$("#divHover").css({
position: 'absolute',
left: x + 20,
top: y - $("#divHover").height() - 20
});
}
if (widthposition < 0) {
$("#divHover").css({
position: 'absolute',
left: x - $("#divHover").width(),
top: y + 20
});
}
}
//build your html string for that hover box and apply to it.
$('#divHover').html("your Html content for that box goes here");
$('#divHover').show();
//if you want the box dynamically generated. create the html content and append to the dom.
}
catch (e) {
alert(e)
}
});
});
}
it will work fine in desktop and mobile. if you face any problem in touch devices, bind the function to click event instead of 'mouseover'.
Also, for map approach, i strongly recommend SVG instead of images.

Cannot position Google +1 button with CSS?

I'm having some trouble positioning the Google +1 button on my website. The div is as follows:
<div class="g-plusone"></div>
The CSS I'm using is pretty simple:
.g-plusone
{
position: absolute;
top:95px;
left:715px;
}
Despite what would seem straightforward, it simple does not want to move.
I know for a fact that the div in question is being accessed. What's strange is that other social sharing buttons, such as the FB like below follow the same syntax and are positioned perfectly.
.fb-like
{
position: absolute;
top:62px;
left:715px;
}
Adding !important to the values does nothing, unfortunately.
Any ideas?
When Google loads +1 button the .g-plusone class seems to disappear, so try to put this DIV inside another DIV, as illustrated below:
HTML:
<div class="google-button">
<div class="g-plusone"></div>
</div>
CSS:
.google-button
{
position: absolute;
top:95px;
left:715px;
}
After page loads, the Google div called g-plusone turns into a lot of code, but, you can manipulate this button with id generated.
In my case, for example, to align the button in the middle of the line I put:
#___plusone_0{
vertical-align: middle !important;
}
Note: The id ___plusone_0 is the id generated by the google codes. Do whatever you want with this id.
Use something like Firebug to ensure you're targeting the correct element. The +1 button is very deeply nested, so you'll most likely need to look further up the DOM tree to get to it's outermost wrapper. You will be able to set the position of that without needing to use !important or anything, so I would definitely check this first.
Sorry, I would have just added this as a comment above but I don't seem to be able :)

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