I have found a tutorial for lazy loading Facebook's like box, but it's appropriate only if you use one FB widget on a page.
How would it look like if you want to load "like button" normally, but would like to lazy load "like box", i. e. load it only if the user scrolls and like box is in the viewport?
Also, is it possible to do it without any plugins nad possibly without jquery, i. e. using only pure javascript?
Here is the mentioned code:
/**
* check if facebookHolder is in viewport, and then load Like Box widget
*/
$(document).ready(function() {
function checkScrollingForWidget(event) {
$('#facebookHolder:in-viewport').each(function() {
$('#facebookHolder').append('<div id="fb-root"></div>');
$('#facebookHolder').append('<fb:like-box href="http://www.facebook.com/forexagone" width="300" show_faces="true" stream="false" header="false"></fb:like-box>');
jQuery.getScript('http://connect.facebook.net/en_US/all.js#xfbml=1', function() {
FB.init({status: true, cookie: true, xfbml: true});
});
$(window).unbind('scroll', checkScrollingForWidget);
}
$(window).bind('scroll', checkScrollingForWidget);
});
Since Facebook's like box is so widely used and can slow down page loading a bit (even if it's async.), I was quite surprised to see that there are no newer tutorials how to do this. Is it possible at all?
Thank you in advance for your ideas.
This is Markus' code in a simple HTML document:
<html><head>
<meta content="text/html; charset=UTF-8" http-equiv="content-type">
<title>Lazy Load</title>
<script src="http://code.jquery.com/jquery-git.js" type="text/javascript"></script>
<script src="http://www.appelsiini.net/download/jquery.viewport.js" type="text/javascript"></script>
<style type="text/css">
.facebookHolder {
height: 50px;
background: #ccc;
}
</style>
<script type="text/javascript">
$(document).ready(function() {
jQuery.getScript('http://connect.facebook.net/en_US/all.js#xfbml=1', function() {
// initiate like boxed already in viewport as soon as fb sdk loaded.
checkScrollingForWidget();
});
function checkScrollingForWidget(event) {
$('.facebookHolder:in-viewport').each(function(index, item) {
if (!$(item).hasClass('fb_loaded')) {
$(item).append('<fb:like-box href="' + $(item).attr('data-url') + '" width="300" show_faces="true" stream="false" header="false"></fb:like-box>');
$(item).addClass('fb_loaded');
FB.XFBML.parse();
}
});
}
$(window).bind('scroll', checkScrollingForWidget);
});
</script>
</head>
<body>
<div id="fb-root"></div>
<div class="facebookHolder" data-url="https://www.facebook.com/Google"></div>
<p style="height: 500px;"></p>
<div class="facebookHolder" data-url="https://www.facebook.com/yahoo"></div>
<p style="height: 500px;"></p>
<div class="facebookHolder" data-url="https://www.facebook.com/stackoverflowpage"></div>
</body></html>
You can add a Facebook widget any time dynamically, but you need call FB.XFBML.parse after adding it to the DOM.
This could be inteteresting for me too so I just fixed the tutorial script:
JSFiddle
Of course you need to import jquery and the viewport plugin (if you want to use it).
<script src="jquery.js"></script>
<script src="jquery.viewport.js"></script>
Then include fbroot tag only once and give the holders an specific data-url attribute because loading one url multiple times doesn't seem to be possible. Late we will read out this data-attribute.
<div id="fb-root"></div>
<div class="facebookHolder" data-url="https://www.facebook.com/Google"></div>
<p style="height: 500px;"></p>
<div class="facebookHolder" data-url="https://www.facebook.com/yahoo"></div>
<p style="height: 500px;"></p>
<div class="facebookHolder" data-url="https://www.facebook.com/stackoverflowpage"></div>
Then use the following jQuery code:
$(document).ready(function() {
jQuery.getScript('http://connect.facebook.net/en_US/all.js#xfbml=1', function() {
// initiate like boxed already in viewport as soon as fb sdk loaded.
checkScrollingForWidget();
});
function checkScrollingForWidget(event) {
$('.facebookHolder:in-viewport').each(function(index, item) {
if (!$(item).hasClass('fb_loaded')) {
$(item).append('<fb:like-box href="' + $(item).attr('data-url') + '" width="300" show_faces="true" stream="false" header="false"></fb:like-box>');
$(item).addClass('fb_loaded');
FB.XFBML.parse();
}
});
}
$(window).bind('scroll', checkScrollingForWidget);
});
Related
The website that I am developing has banners, and when the site is viewed on mobile devices, the SWF banner doesn't show. In that case, I need to show an <img> tag, but the jQuery code doesn't work.
My template is something like this:
... (PHP + HTML code)
<script type=”text/javascript”>
if(!/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera
Mini/i.test(navigator.userAgent)) {
</script>
... Show SWF banner
<script type=”text/javascript”>
}
else {
</script>
... Show GIF banner
<script type=”text/javascript”>
}
</script>
But it doesn't work. it shows up both of them instead.
You may need to do this:
Javascript/JQuery:
$(function() {
if(!/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera
Mini/i.test(navigator.userAgent)) {
$("#img").show();
}else{
$("#swf_banner").show();
}
});
HTML:
<img id="img" src=".." style="display:none;"/>
<object id="swf_banner" width="400" height="50" data="bookmark.swf" style="display:none;"></object>
I've been trying to use JqueryUIs resizable to create resizable divs like on jsfiddle for example. Jsfiddle makes use of JqueryUI resizable with handles so that you can expand the code editor or the output area displaying the dhtml results (a design etc). I've just about tried every solution given to others who experience problems working with jquery ui's resizble. Is there a way to create a resizable div with CSS only and have a custom handle? I've tried this as well and it's not working either http://blog.softlayer.com/2012/no-iframes-dynamically-resize-divs-with-jquery/ but it's what I'm looking for; two divs, one containing the main content and the other containing sidebar stuff. I made a fiddle quickly of that solution given here: http://jsfiddle.net/asx4M/1/ I would appreciate it if someone could tell me what it is I'm doing wrong or provide me with another solution for what I'm trying to do.
here's the code as well:
<!DOCTYPE html>
<html>
<head>
<style>
#sidebar {
width: 49%;
}
#content {
width: 49%;
float: left;
}
</style>
<link href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/themes/base/jquery- ui.css" rel="stylesheet" type="text/css"/>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.5/jquery.min.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/jquery-ui.min.js"> </script>
<script type="text/javascript">
$(document).ready(function() {
$( "#sidebar" ).resizable({
});
$("#sidebar").bind("resize", function (event, ui) {
var setWidth = $("#sidebar").width();
$('#content').width(1224-setWidth);
$('.menu').width(setWidth-6);
});
});
</script>
</head>
<div id="sidebar">
<div class="sidebar-menu">
<!-- all your sidebar/navigational items go here -->
</div>
</div>
<div id="content">
<!-- all your main content goes here -->
</div>
$('#content).width(1224-setWidth);
$('.menu).width(setWidth-6);
Should be
$('#content').width(1224-setWidth);
$('.menu').width(setWidth-6);
The problem is with the quotes that you have not closed. for menu class and content id
$(document).ready(function() {
$( "#sidebar" ).resizable({
});
$("#sidebar ").bind("resize", function (event, ui) {
var setWidth = $("#sidebar").width();
$('#content').width(1224-setWidth);
$('.sidebar-menu').width(setWidth-6);
});
});
EDIT: How can I extend/edit "appended content" ?
I mean, If I have a div named "website" at "include.html" (the file which I appended using jquerys load) , Can I add text / code to that DIV after appending it?
I have a simple HTML menu page which Im trying to load to every page in my website.
Sorry if its a noob question ;) kinda noob with Jquery/js/html.
Here's one of the files:
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" type="text/css" href="cstyles.css">
<script type='text/javascript' src='jquery-1.9.1.js'></script>
<script type='text/javascript' src='menu2.js'></script>
<script type='text/javascript' src='menu_load.js'></script>
</head>
<body>
<script>
loadContent();
$(document).on('mouseenter', "#menulist", function() {
mainmenu();
});
</script>
<div id="contact_us" style="background:blue;">Something</div>
</body>
</html>
Heres menu2.js:
function mainmenu() {
$(" #menulist li").hover(function () {
$(this).find('ul:first').css({
visibility: "visible",
display: "none"
}).show(300);
}, function () {
$(this).find('ul:first').css({
visibility: "hidden"
});
});
}
$(document).ready(function () {
mainmenu();
});
heres menu_load.js:
function loadContent() {
$("body").load("include.html");
}
Problem is: After loading the menu successfully (the html file named INCLUDE.html), The content on the page "disappears"...
In this case, the word: something wont show up.
To be more clear, it will show up for a second and then will be replaced by the content on the "include.html" file.
Any suggestions?
thanks in advance!
This happens because the way $("#body").load() works. I would suggest changing that with
.prepend()
That's because you're loading the include.html file in the entire document. You should make a element with an id and load it there. For example
<div id="toload"></div>
Then your jquery function would be:
function loadContent() {
$("#toload").load("include.html");
}
Creating a web mapping application in Javascript/Dojo:
When I load the app in a browser it loads the html elements but then stops processing. I have to refresh the browser to get it to load the rest of the page and the javascript.
I have done testing and debugging all day and figured out I had my external JS files in the wrong spot (I'm a rookie). Fixed that and the app loads great...EXCEPT one of my files isn't getting read correctly, or at all.
When I move the contents of the external JS file in question to the main code in the default, the functionality that they contain, work fine... BUT the map requires the refresh again.
Stumped. Below is the code in the external JS file that is causing my issue. I can't figure out why it is a problem because the functions work as expected when it is not external.
Any help is greatly appreciated.
//Toggles
function basemapToggle() {
basemaptoggler = new dojo.fx.Toggler({
node: "basemaptoggle",
showFunc : dojo.fx.wipeIn,
showDuration: 1000,
hideDuration: 1000,
hideFunc : dojo.fx.wipeOut
})
}
dojo.addOnLoad(basemapToggle);
function layerToggle() {
layertoggler = new dojo.fx.Toggler({
node: "layertoggle",
showFunc : dojo.fx.wipeIn,
showDuration: 750,
hideDuration: 750,
hideFunc : dojo.fx.wipeOut
})
}
dojo.addOnLoad(layerToggle);
function legendToggle() {
legendtoggler = new dojo.fx.Toggler({
node: "legendtoggle",
showFunc : dojo.fx.wipeIn,
hideFunc : dojo.fx.wipeOut
})
}
dojo.addOnLoad(legendToggle);
EDIT
Edited to show additional code. Genuinely stumped by this. Would love to get some feedback. I've tried moving it to the main file, reformatting the functions and all of those things work, except they require the refresh. I'm also losing some information on a refresh. Very odd behavior. Any good way to track this down?
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=7, IE=8, IE=9" />
<meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no"/>
<link rel="Stylesheet" href="ZoningClassifications.css" />
<link rel="stylesheet" type="text/css" href="http://serverapi.arcgisonline.com/jsapi/arcgis/3.0/js/dojo/dijit/themes/claro/claro.css">
<link rel="stylesheet" type="text/css" href="http://serverapi.arcgisonline.com/jsapi/arcgis/3.0/js/esri/dijit/css/Popup.css">
<link rel="stylesheet" type="text/css" href="http://serverapi.arcgisonline.com/jsapi/arcgis/3.0/js/dojo/dojox/grid/resources/Grid.css">
<link rel="stylesheet" type="text/css" href="http://serverapi.arcgisonline.com/jsapi/arcgis/3.0/js/dojo/dojox/grid/resources/claroGrid.css">
<style type="text/css">
</style>
<script src="JS/layers.js"></script>
<script src="JS/search.js"></script>
<script src="JS/basemapgallery.js"></script>
<script src="JS/toggles.js"></script>
<script src="JS/identify.js"></script>
<script type="text/javascript">
var djConfig = {
parseOnLoad: true
};
</script>
<script type="text/javascript" src="http://serverapi.arcgisonline.com/jsapi/arcgis/?v=3.0"></script>
<script type="text/javascript">
dojo.require("dijit.dijit"); // optimize: load dijit layer
dojo.require("dijit.layout.BorderContainer");
dojo.require("dijit.layout.ContentPane");
dojo.require("esri.map");
dojo.require("dijit.TitlePane");
dojo.require("esri.dijit.BasemapGallery");
dojo.require("esri.arcgis.utils");
dojo.require("esri.tasks.locator");
dojo.require("esri.dijit.Legend");
dojo.require("esri.dijit.Popup");
dojo.require("dijit.form.Button");
dojo.require("dojo.fx");
dojo.require("dijit.Dialog");
dojo.require("dojo.ready");
dojo.require("dijit.TooltipDialog");
dojo.require("dojox.grid.DataGrid");
dojo.require("dojo.data.ItemFileReadStore");
dojo.require("esri.tasks.find");
var map, locator, layer, visible = [];
var legendLayers = [];
var resizeTimer;
var identifyTask,identifyParams;
var findTask, findParams;
var basemaptoggler = null;
var layertoggler = null;
var legendtoggler = null;
var findTaskParcel, findParamsParcel;
// var gridParcel, storeParcel;
EDIT 2
I've completely rewritten the app placing all the code (except the css) in the main default.html file. I tested piece by piece to make sure it functioned how I want. Adding the toggles code is the only code that throws it and causes the extra refresh.
So for now I am using dijit.TitlePane to hold the drop down elements (basemap gallery, layers, legend). However with this you can not change the look and feel to make them images, which is my end goal.
Can anybody suggest an alternative so I can use 3 different images so that when you click on the image and drop down menu opens holding the basemap gallery, layer list and legend?
EDIT 3
It'll probably help to show the code I use to call the toggle functions: I suspect this might be where my issues are.
<!--Legend-->
<div id="subheader">
<div style="position:absolute; right:60px; top:10px; z-Index:98;">
<div id="legendbutton">
<button dojoType="dijit.form.Button" baseClass="tomButton" title="Show Legend">
<img src="images/Legend.png" />
<script type="dojo/method" event="onClick">
legendtoggler[(dojo.style("legendtoggle","display") == "none") ? 'show':'hide']();
</script>
</button>
<div id="legendtoggle" dojoType="dijit.layout.ContentPane" style="border: 1px solid black; display: none">
<div id="legendDiv"></div>
</div>
</div>
<!--Layer Toggle-->
<div id="layerbutton">
<button dojoType="dijit.form.Button" baseClass="tomButton" border="0" title="Toggle Layers">
<img src="images/layers.png"/>
<script type="dojo/method" event="onClick">
layertoggler[(dojo.style("layertoggle","display") == "none") ? 'show':'hide']();
</script>
</button>
<div id="layertoggle" dojoType="dijit.layout.ContentPane" style="border: 1px solid black; display: none">
<span id="layer_list"><input type='checkbox' class='list_item' id='0' value=0 onclick='updateLayerVisibility();'
</span>
</div>
</div>
<!--Basemap Gallery-->
<div id="basemapbutton">
<button dojoType="dijit.form.Button" baseClass="tomButton" title="Switch Basemap">
<img src="images/imgBaseMap.png"/>
<script type="dojo/method" event="onClick">
</script>
</button>
<div id="basemaptoggle" dojoType="dijit.layout.ContentPane" style="#900;display: none;">
<span id="basemapGallery">
</span>
</div>
</div>
As a Workaround here is something similar I did:
http://www.martindueren.de/paperwriting/
The Icons on the right hand side of the app make dijit.TitlePanes wipe in and out. The effect used for this can be found on this page:
http://dojotoolkit.org/documentation/tutorials/1.8/effects/
The code for this would be something like this:
<button id="slideAwayButton">Slide block away</button>
<button id="slideBackButton">Slide block back</button>
<div id="slideTarget" class="red-block slide">
A red block
</div>
<script>
require(["dojo/fx", "dojo/on", "dojo/dom", "dojo/domReady!"], function(fx, on, dom) {
var slideAwayButton = dom.byId("slideAwayButton"),
slideBackButton = dom.byId("slideBackButton"),
slideTarget = dom.byId("slideTarget");
on(slideAwayButton, "click", function(evt){
fx.slideTo({ node: slideTarget, left: "200", top: "200" }).play();
});
on(slideBackButton, "click", function(evt){
fx.slideTo({ node: slideTarget, left: "0", top: "100" }).play();
});
});
</script>
Feel free to look at my source-code and copy stuff from it! If I understood you correctly this is exactly what you need too.
Quite the story youve put up here, its difficult to pinpoint, excactly what your issue is.. But since youre saying 'map need an extra refresh', then im guessing it could be due to the flow of things you call require for. Problem may very well be, that youre rolling out legacy loader code from a dojo-version which is AMD loader capeable.
Since i really havent run any esri components before, this is kind of a wild guess - but from my pov it could be worth a shot. Im sure google maps has an onload listener - and i suspect esri to follow this behavior.
Try initializing everything in your application before loading any esri modules, like such:
dojo.addOnLoad(function() {
basemapToggle();
layerToggle();
legendToggle();
dojo.require("esri.map");
dojo.require("esri.dijit.BasemapGallery");
dojo.require("esri.arcgis.utils");
dojo.require("esri.tasks.locator");
dojo.require("esri.dijit.Legend");
dojo.require("esri.dijit.Popup");
dojo.require("esri.tasks.find");
});
As goes for the effects youre looking for, personally i'd make use of dojo.animateProperty and combine it with dijit/TooltipDialog.
This http://jsfiddle.net/seeds/a8BBm/2/ shows how to 'hack' the onShow mechanizm, leaving optional effects possible in the opening animation. By default, DropDownButton simply fades in.
See http://livedocs.dojotoolkit.org/dijit/TooltipDialog#programmatic-example for alternate ways to popup the tooltipdialog - i.e. connecting dijit.popup to any click/mouseover event.
Here is the home page for the popular jquery-plugin galleria. I need to insert the download link to the right bottom corner for the active image. Now there is available statistic like (3/10), which indicates the current number from list.
Maybe someone already did this. What is the fastest way?
UPD: using the gearsdigital's idea I wrote the code:
var gallery = Galleria.get(0);
gallery.bind(Galleria.IMAGE, function(e) {
imgHandle = e.imageTarget;
console.log(imgHandle);
console.log(imgHandle.attr('href'));
//$('.galleria-counter').append('Download');
});
The first log line shows up something like:
<img width="584" height="438" src="http://....jpg" style="display: block; position: relative; left: 0px; top: -4px; opacity: 1;">
But how to get the src location, I see the error that attr function isn't available.
your getting the imgHandle from a DOMEvent, not a jquery object.
As attr is part of the jQuery object you need to transfer the dom object to a jquery object.
gallery.bind(Galleria.IMAGE, function(e) {
imgHandle = $(e.imageTarget); //Wrap it here
alert(imghandle.attr('href'))
//$('.galleria-counter').append('Download');
});
I would try to get the current Source-Attribute from the current image and append this as link.
//Untested. This is just a suggestion :)
currentImageSource = $('.galleria-image img').attr('src');
$('.galleria-counter').append('Download');
But a link like this will open the image separatly and not download ordinary. If you want a "real" Download you have to put this image in an zip archive.
$('.galleria-counter').append('Download');
This will produce something like that: http://www.example.com/galleria/img/mygreatimage.jpg.zip
Works for me:
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Example</title>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.4.2.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
currentImageSource = $('.container img').attr('src');
$('.placeholder').append('Download');
});
</script>
</head>
<body>
<div class="container">
<h2>Get img src</h2>
<img src="http://www.duba.at/wp-content/uploads/2007/08/bild_0570000.jpg" witdh="200" height="220"/>
</div>
<div class="placeholder">
<h2>Append Here</h2>
</div>
</body>
</html>