I decide to make read more... function by having two divs, and setting one of them display: none
but in this case i store all the data twice.
now the question -
If I have one div element, with style="display:none", which contains many big size images in it, is it have an influence on page opening time?
display:none does not prevent the hidden content from being loaded with the rest of the page.
If you want to make the page "lighter" at load time you can load the "read more.." content via Ajax on-demand.
The images would get fetched immediately even when the parent div is set to display: none.
If this is not your intention, and you do not want to go with the AJAX route, you may want to insert the images into the DOM only when the read more... button is clicked, as in the following example:
var hiddenDiv = document.getElementById("your-hidden-div-id");
var imageToLoad = document.createElement("img");
imageToLoad.setAttribute("src", "image1.png");
hiddenDiv.appendChild(imageToLoad);
Related
I'm wondering if there is a way to add dynamic headers or footers to a document, i.e. putting a "Page Title" in the footer that is different for every page.
I understand that editing the built-in header or footer would be reflected on every page. I'm wondering if anyone has thought of a workaround to either "force" it by accessing the first/last line on a page and inserting text there, or if there is another way to dynamically update the page.
AFAIK, this is not yet available. There is an open issue on can't reliably access first page vs other pages header / footer info.
I've used the codes here, to list the document's children.
DocumentBodySection: Index 0
HeaderSection: Index 1
FooterSection: Index 2
HeaderSection: Index 3
FooterSection: Index 4
This function change the text of the selected child.
function myFunction() {
var copyDoc = DocumentApp.getActiveDocument();
var footer = copyDoc.getFooter();
Logger.log(footer.getParent().getChild(2).asText().setText("Test"))
}
Second Page
Third Page
Changing a footer section will apply to all footer section, according to this blog you can only set a different header/footer in the first page. The provided open issue link also states that it can only be checked manually as it is not available.
How can I go about creating a form which pops up when the user clicks a button on a Jade template? I tried the following in HTML, which works:
http://www.formget.com/how-to-create-pop-up-contact-form-using-javascript/
Now to use this in my Node.js project would I need to create a separate Jade file for the form itself? That is what I tried and then I tried to display the form like this:
function div_show() {
alert("Test");
document.getElementById('abc').style.display = "block";
}
Unfortunately that does not work. What is the recommended approach for creating a pop up form in Jade? I am really confused with Jade and I can't seem to find a good tutorial for this, there are loads for HTML...
Thanks for the help!
Normally for this you would use:document.getElementById('abc').style.visibility="visible";
To hide your table use:document.getElementById('abc').style.visibility="hidden";
When using the 'style' attribute you are using plain css commands. Make sure your default div style settings have it 'hidden', if that is what you want.This display:block;visibility:hidden;' must exist in your default settings for that div style so the DOM has a clear path to what it is controlling. By itself 'display:block;' does not hide or make objects visible, it is mostly about the shape the div creates as a container for objects.
As an option you can use:
document.getElementById('abc').style.display="block";
To hide your table use:document.getElementById('abc').style.display="none";
For this you would set your div style settings to 'display:none;visibility:visible;.
In this case 'display="none"' removes the object from all display layers and could allow other objects to fill in it's space. When it is visible it will push other objects on the same z-index out of the way. If it has a higher z-index, say +100 higher, it will pop-up above the other objects on the page. The 'visibility' attribute only controls the objects visibility, it does not remove it from the display memory. It can still take up space even though it is not visible. The 'opacity' attribute does about the same thing, except it allows you to also make an object as transparent as you like.
Here's the case: I have a series of thumbnails in a page, and I would like to display several keywords over each image when the user hovers with the cursor. Each of those keywords are anchor tags that point to a search query. And each thumbnail (the image) should also be clickable (through the empty spaces that the keywords leave) and point to a specific page.
I have everything already coded, I'm just missing a way to display the keyword anchors over the image anchors. I already tried with an onclick="window.location.href=..." but when the user clicks the keyword, the onclick is also triggered (for instance: if I ctrl+click on a keyword, i get the keyword search on a different window, but the main window content changes as well).
Any help will be much appreciated. Thanks!
This is quite common and can definitely be done with plain HTML and CSS. You can also do it with JavaScript, but I prefer to avoid doing so if possible.
This example is perfectly valid HTML/CSS and should have no weird browser rendering issues (even as far back as IE 6).
http://jsfiddle.net/2JD76/1/
Basically you have a containing element, in this case a div, which has your linked thumbnail and linked keywords. They're hidden by default and only shown when the containing div is hovered.
The linked thumbnail is absolutely positioned so that it's taken out of the page flow which then allows the linked keywords to appear on top. I then use z-indexes to make sure that the keywords are always on a layer that is higher than that of the linked thumbnail.
You can not. It is illegal html.
Attach a click handler that changes the current location instead of the "greater ".
I was going to answer with a long reply but, well check out my Jsfiddle here. I was trying to solve something before and well...check it out.
http://jsfiddle.net/somdow/KSt6a/
If you look at the code, its doing exactly what you are describing.
On my Jsfiddle, theres a div box with space for an image(this is wher YOUR image would go), The image is on the code but not on the jsfiddle so youll see the alt tag....Anyways so, on mouse-over, it brings up another div with text dynamically created inside of it.
All you have to do is replace the image content with your own image, then Insert the links/keywords links you want into this line
.prepend('<div class="portSecRollOver"><div class="portSecInner"></div></div>');
and stick your words in between the <div class="portSecInner"> **YOUR WORDS HERE** </div> line
And change the CSS to fit your needs.
oh AND ps, DELETE this line (below) which is the one that dynamically appends text inside of "portSecInner", since your going to insert your own words, then you dont need this line.
$(this).find('.portSecInner').html("<h3 class='h34roll'>" + $(this).find('img').attr("alt") + "</h3>");
I've got a table with a header, a row with input fields, rows with data. Like this. http://brow.hu/sitegen/stackoverflow_table_example.png
If somebody enters something into an input field I want to filter the data with an ajax query. After receiving the new table I change the content of the old one: div.innerHTML = req.responseText; and it blinks. How to avoid that?
One way to avoid flicker is called double-buffering. In Ajax, this can be done simply with 2 divs occupying the same space, one of them with the style 'display: none', the other 'display: inline'. Always write to the invisible one, and then swap display styles. If the divs have absolute positioning and size, there is absolutely no chance for flicker, and even if they don't, you can hardly do better.
It blinks because you're completely replacing the table ... if you add rows to or delete rows from the existing table and then load your AJAX data into the resulting table it won't blink.
I have a table that is dynamically created using DIVs. Each row of the table has two images. I want to set the height for the div (that represents a particular row) to the height of image that is greater of the two images being displayed in that particular row. The images to displayed will always change, and they are from an external server.
How do I set the height for my div so that I can fit images?
If you are trying to dynamically resize a couple of divs in a row within a table, you maybe better off using a html table instead and having each image within a td tag. This will make tr tag resize accordingly for the image in each cell.
this.img = new Image();
this.img.src = url;
alert(this.img.width);
gives the width while
var img = new Image();
img.src = url;
alert(img.width);
doesnt..
dunno why.
You can:
Not specify the height of the div, and let it expand automatically
Once the image is loaded do:
document.getElementById("myDiv").height = document.getElementById("myImage").height
We'll need a little more info to be very useful. You can get the height & width of an image after the page loads via Javascript (info), then you could resize the height of the div after loading. Otherwise, you're really out of luck since HTML itself doesn't have anything.
If you're using PHP, there's getimagesize(), which you can use if you're building the site dynamically with PHP. There are similar functions for other languages, but we'd need a little more info.
If you want the browser to do layout based on the height of an image, before it fetches the image, you need to send that height to the browser somewhere. This will require something server-side. The fastest thing would be to insert in into the html directly. Slower but more elegant would be to fetch it image by image with <script src=> statements that get instructions from a special bit of javascript-generating cgi. (The speed difference comes from network round trips.)
If you're willing to resize after the data arrives, it's much simpler. Either slap an onload handler on the images or stick them in normal dom (e.g. an actual table, though you can do it with divs and css) and let the layout engine do the work.
This question has been answered in multiple ways, and you asked the additional question "Won't this make the UI look bad?"
The answer to that question is Yes. The best thing for you to do in most cases will be to set the height of your div to something that looks good, then scale the images down to fit. This will make the rendering faster, and the final product will look better and more professional.
But that's just my own opinion, though. I have no empirical data to back that up.
Pre-load them into javascript image objects then just reference the height and width.
Might take some clever devilry to work in all browsers...
function getSize(imgSrc){
var aImg = new Image();
aImg.src = imgSrc;
aHeight = newImg.height;
aWidth = newImg.width;
}