I'd like to set the background color of an HTML element to the background color of another HTML element. This needs to happen at runtime using Javascript. I tried the following but it fails silently (the background color remains unaltered):
DOM.setElementProperty(element, "backgroundColor", "document.getElementById('country').style.backgroundColor");
Any ideas?
This is untested, but I would try
element.getStyle().setBackgroundColor(DOM.getElementById("country").getStyle().getBackgroundColor());
If you happen to be using a JS framework (jQuery, MooTools, etc), it should be as simple as something like (all code untested):
$("div2").attr("background") = $("div1").attr("background")
I normally just run with a framework (because I'm already using it elsewhere), but basic JavaScript should also be pretty simple as well, something along the lines of:
getElementByID("div2").setAttribute('background') = getElementByID("div1").getAttribute('background')
or
getElementByID("div2").Attribute('background') = getElementByID("div1").Attribute('background')
One thing I noticed in a quick reference search, though, is that the basic JavaScript method isn't consistent across browsers (IE seems to be quirky). Just something to keep in mind on that front.
Related
I have an SVG asset of a map, in which I have to change the color of some cities depending on the results of a network call. On the web, one normally would add a class to each path, give it some CSS, and toggle that class using JavaScript.
How can I achieve the same effect in flutter?
This can be done with the new version of jovial_svg. It supports embedded stylesheets, so you can use CSS exactly as suggested. Of course, you'd need to re-parse the SVG whenever there's a change, but that's not a big deal here.
Alternately, if it's just one set of cities, you could use SVG's currentColor, and set that value in the appropriate ScalableImage factory. But for your use case, CSS seems like the better way to go.
NOTE: At this exact moment, CSS support is in pre-release, but it should be formally released as 1.1.4 within a couple of days. In the meantime, see https://pub.dev/packages/jovial_svg/versions/1.1.4-rc.3
I've been working on a website and from time to time some elements are disappearing from the document. I've figured out that it's because in CSS document the early lines are not fully commented. I would like to ask why if even such a tiny thing like Skeleton's default version text is not fully commented or some of the classes or id's don't have a closing bracket then the whole website has layout problems. What skeleton's version has to do with page's body color ? This is really confusing.
Here is the HTML and CSS :
http://codepen.io/anon/pen/vIchA
I would be glad with any help. Yours truly,
D.
Browsers have to guess how to render bad code. Sometimes they will guess and render it correctly, other times it will look weird.
Different browsers are likely to render it differently (though error handling standards are improving)
In this case, your demo lacks a "/" at the start, which means it is trying to render the comments as css. The comments are not css, so it gets confused and does the best it can.
A quick way to find any bugs in the css is to use this:
http://jigsaw.w3.org/css-validator/
The object is to Show-Hide text located under their respective Titles, so a User reads the title and shows or hides text belonging to that title if the User wants to read more.
I tried whatever I could find so far on here, we're talking dynamically setting text coming from a spreadsheet, can't use IDs, must work with .class, must be missing something, I have this piece of code:
... html.push('<div class="comments">' + comment + '</div></div></div>');
but when I try this Show-Hide code nothing happens, even if the error console shows nothing. Basically I want to Show-Hide the .comments class divs with a show-hide toggle link located under each of them. I say them because the .comments divs are reproduced dynamically while extracting text coming from Google spreadsheet cells/row (one .comments div per spreadsheet row). I tried .next, child and parent but they all divorced me so I dunno looks like a dynamic issue. So far I only managed to globally toggle all divs to a visible or hidden state but I need to toggle independantly individual divs.
I prefer a jQuery solution but whatever worked so far was achieved with native javascript.
Note: If a cross-browser truncate function which would append a more-less link after a number of words (var) in each .comments divs would be easier to implement then I would gladly take that option. Thx for any help, remember I am still learning lol!
I have been working on an entirely JS UI project and have brought myself to using $('', { properties }).appendTo(BaseElement) to work best for adding HTML elements because it appropriately manipulates the DOM every time.
If you are having good luck with push elsewhere, however, breakpointing on the line where you do your $('.class').hide() and see what $('.class').length is. Alternately, you can just add alert($('.class').length) to your code if you are unable to breakpoint the code. If it is 0, then your elements have not been properly added to the DOM. Changing to append will ensure they are part of the DOM and therefore targetable via JQuery.
I'm trying to use the printing stuff in iOS 4.2 to print from my iPhone app, but I'm having real trouble getting multi-page content to display nicely. As you can see in the attached screenshots of PDFs generated through the iOS printing API, UIMarkupTextPrintFormatter really likes to use a painfully small top-margin when rendering.
Additionally, it doesn't seem to try to split block-elements too nicely either ... it's tough to see in the screenshot but the page break actually occurs halfway through a table row, rather than on a border between rows.
I've tried using the CSS #page directives to specify page boundaries, however iOS Webkit doesn't seem to support these at all.
Does anyone know of any techniques, either in HTML or through the iOS SDK to make these top-margins bigger?
I really don't want to write a custom UIPrintPageRenderer class because I'm trying to give my users the ability to customize their printouts through HTML templates ... going with a custom renderer would almost certainly make this impossible (or really difficult).
Any help is much appreciated!
You're on the right track with UIPrintPageRenderer, but fortunately you don't need to write a custom subclass to do this. All you need to do is instantiate a vanilla UIPrintPageRenderer, set the headerHeight and footerHeight properties, and add your HTML formatter to the renderer using addPrintFormatter:startingAtPage:. It only takes a few extra lines of code, I have posted my method here: Print paper size and content inset
I have no idea how to handle this code within a style attribute. How do I correctly code this markup or properly escape it? I could use a string.format and emit the entire div but that seems like an awkward solution.
(I figured all those slant brackets would pose an issue in this posting so I am including an image.)
I see this all the time in my editor as well, for some reason, it doesn't color the attributes properly sometimes in CSS and JS. However, the attribute that you are spitting out will should still perform like you are expecting.