I'm kind of like stuck trying to implement YUI autocomplete textbox. here's the code:
<div id="myAutoComplete">
<input id="myInput" type="text" />
<div id="myContainer"></div>
</div>
<script type="text/javascript">
YAHOO.example.BasicRemote = function() {
oDS = new YAHOO.util.XHRDataSource("../User/Home2.aspx");
// Set the responseType
oDS.responseType = YAHOO.util.XHRDataSource.TYPE_TEXT;
// Define the schema of the delimited results
oDS.responseSchema = {
recordDelim: "\n",
fieldDelim: "\t"
};
// Enable caching
oDS.maxCacheEntries = 5;
// Instantiate the AutoComplete
var oAC = new YAHOO.widget.AutoComplete("myInput", "myContainer", oDS);
oDS.generateRequest = function(sQuery) {
return "../User/Home2.aspx?method=" + "SA&Id="+document.getElementById("lbAttributes")[document.getElementById("lbAttributes").selectedIndex].value +"&query="+sQuery;
};
oAC.queryQuestionMark =false;
oAC.allowBrowserAutoComplete=false;
return {
oDS: oDS,
oAC: oAC
};
}
</script>
I've added all the yahoo javascript references and the style sheets but it never seems to make the ajax call when I change the text in the myInput box and neither does it show anything... I guess I'm missing something imp...
#Kriss -- Could you post a link to the page where you're having trouble? It's hard to debug XHR autocomplete without seeing what's coming back from the server and seeing the whole context of the page.
#Adam -- jQuery is excellent, yes, but YUI's widgets are all uniformly well-documented and uniformly licensed. That's a compelling source of differentiation today.
To be honest, and I know this isn't the most helpful answer... you should look into using jQuery these days as it has totally blown YUI out of the water in terms of ease-of-use, syntax and community following.
Then you could toddle onto http://plugins.jquery.com and find a whole bunch of cool autocomplete plugins with example code etc.
Hope this helps.
Related
I am using express-handlebars in my project and have the following problem:
Question
I want to be able to add <script> oder such tags to my overall views head from a partial that is called inside the view.
Example:
The view
{{#layout/master}}
{{#*inline "head-block"}}
<script src="some/source/of/script">
{{/inline}}
...
{{>myPartial}}
{{/layout/master}}
The view is extending another partial (layouts/master) that I use as a layout. It adds its content to that ones head block through the inline partial notation, which works fine
the Partial "myPartial
<script src="another/script/src/bla"></script>
<h1> HELLO </h1>
Now I would like that particular script tag in there to be added to my views head-block. I tried going via #root notation but can only reference context there. Not change anything.
I know I could use jquery or similar to just add the content by referencing the documents head and such. But I wanted to know if this is possible at all via Handlebars.
I do doubt it is in any way. But if you have any ideas or suggestions, please do send them my way! Many thanks!!!
UPDATE
This wont work if you have more than one thing injected into your layout / view. Since this happens when the browser loads the page, it creates some kind of raceconditions where the helpers has to collect the things that have to be injected into the parent file. If its not quick enough, the DOMTree will be built before the helper resolves. So all in all, this solution is NOT what I hoped for. I will research more and try to find a better one...
Here is how I did it. Thanks to Marcel Wasilewski who commented on the post and pointed me to the right thing!
I used the handlebars-extend-block helper. I did not install the package, as it is not compatible with express-handlebars directly (Disclaimer: There is one package that says it is, but it only threw errors for me)
So I just used his helpers that he defines, copied them from the github (I am of course linking to his repo and crediting him!) like so:
var helpers = function() {
// ALL CREDIT FOR THIS CODE GOES TO:
// https://www.npmjs.com/package/handlebars-extend-block
// https://github.com/defunctzombie/handlebars-extend-block
var blocks = Object.create(null);
return {
extend: function (name,context) {
var block = blocks[name];
if (!block) {
block = blocks[name] = [];
}
block.push(context.fn(this));
},
block: function (name) {
var val = (blocks[name] || []).join('\n');
// clear the block
blocks[name] = [];
return val;
}
}
};
module.exports.helpers = helpers;
I then required them into my express handlebars instance like so:
let hbsInstance = exphbs.create({
extname: 'hbs',
helpers: require('../folder/toHelpers/helpersFile').helpers() ,
partialsDir: partialDirs
});
Went into my central layout/master file that`is extended by my view Partial and added this to its <head> section
{{{block 'layout-partial-hook'}}}
(The triple braces are required because the content is HTML. Else handlebars wont recognize that)
Then in the partial itself I added things like so:
{{#extend "layout-partial-hook"}}
<link rel="stylesheet" href="/css/index.css"/>
{{/extend}}
And that did the trick! Thanks!!!
I am working on node js with mongodb. I am getting the value of doc in view file.
{{#each doc}}
<div class="abstract" data-reactid=".1ejbmifi4u8.1.1.0.1.2.0:$35.0.0.1.2.0" id="content">
{{this.content}}</div>
{{/each}}
this will print the value of content.
I want to print only 40 characters of this content on view page and then want to implement "read more" to go to full content page.
Guessing by the syntax, you are using Handlebars or some similar derivative. If it's not Handlebars, you'll have to modify the below a little to match your framework, but it should be similar. Leave a comment if it's not and I'll edit.
Handlebars supports what is known as helpers which allow you to manipulate data fed into your views.
You could write a helper named, for example, excerpt, like so:
Handlebars.registerHelper('excerpt', function(data, url) {
if (data.length > 40) {
return new Handlebars.SafeString(
data.substring(0, 40) + '… Read more"
);
}
return data;
});
You can then use it like {{excerpt this.content this.readMoreUrl}}, where this.readMoreUrl is whichever property provides the relevant URL.
I am not familiar with the JavaScript MVC but You can do something like this in JS:
content = this.content
if(content.length > 40)
content_to_print = content.substr(0,40)
content_to_print = content_to_print+' Read More...'
Hope this helps!
I'm working on designing a site in WP, but I'm at a loss for the right words to google. What I'm looking for is a "text container that can be toggled". I have a syntax highlighting plugin for posting code, but I don't want the code to be visible in large blocks considering it may be a little distracting. I was wondering if anyone could link me to a plugin or give me the technical term for what I'm thinking of, where you can put the text in a group and then be able to toggle whether it is visible or not within the page.
It sounds like what you are looking for is simply applying a CSS class to the element and then using jQuery or some other JS library to toggle its visibility. Example below (code is not optimized in order to explain some of the concepts. This can, read "should", be cleaned up):
// This is HTML/CSS
<body>
...
<p>Here is some normal text.</p>
Show/hide source code for displayText method
<div class="source_code" id="source_code_for_displayText_method">
// Groovy code
...
public void displayText(String message) {
outputStream.write(message)
}
...
</div>
...
Show/hide source code for download method
<div class="source_code" id="source_code_for_download_method">
// Groovy code
...
GParsPool.withPool(threads) {
sessionDownloadedFiles = localUrlQueue.collectParallel { URL url ->
downloadFileFromURL(url)
}
}
...
</div>
...
Show/hide all source code sections
...
</body>
You can default all source code sections to hidden:
// This is CSS
.source_code {
display: hidden;
}
Then you would use JS to provide the toggle ability:
// This is JavaScript
// This toggles a specific section by using an id ("#") selector
$('#source_code_displayText_method_toggle_link').onClick(function() {
$('#source_code_for_displayText_method').toggle();
});
// This toggles all source code sections by using a class (".") selector
$('#source_code_all_toggle_link').onClick(function() {
$('.source_code').toggle();
});
Some thoughts:
If you toggle all sections, you need to determine what the current state is -- if some are currently shown and others hidden, this will invert each. If you want "hide all" and "show all", then use .hide() and .show() respectively.
If you are manually adding the source code sections and want semantic selectors, the above is fine. If you are building some kind of automation/tool to allow you to repeat this, you'll probably want to use generated ids and helper links, in which case it would look like:
.
// This is HTML/CSS
<body>
...
<p>Here is some normal text.</p>
Show/hide source code for displayText method
<div class="source_code" id="source_code_1">
// Groovy code
...
public void displayText(String message) {
outputStream.write(message)
}
...
</div>
...
Show/hide source code for download method
<div class="source_code" id="source_code_2">
// Groovy code
...
GParsPool.withPool(threads) {
sessionDownloadedFiles = localUrlQueue.collectParallel { URL url ->
downloadFileFromURL(url)
}
}
...
</div>
...
Show/hide all source code sections
...
</body>
With the JavaScript to handle id parsing:
// This is JavaScript
// This toggles a specific section by using a dynamic id ("#") selector
$('.source_code_toggle_link').onClick(function(elem) {
var id = $(elem).attr("id");
// Split on the _ and take the last element in the resulting array
var idNumber = id.split("_")[-1];
var codeBlock = $('#source_code_' + idNumber);
codeBlock.toggle();
});
I have a show which displays a form with fields populated from a document. I'd like to change the values in the field and then save the updated document.
I'm having trouble finding a clear, concise example of how to do this.
Seriously, just finishing this example would work wonders for so many people (I'm going to leave a lot of stuff out to make this concise).
Install Couchapp
This is outside the scope of my question, but here are the instructions for completeness.
Create a couchapp
Again, this is kind outside the scope of my question. Here is a perfectly concise tutorial on how to create a couchapp.
Create a template
Create a folder in the root of your couchapp called templates. Within the templates folder create an HTML page called myname.html. Put the following in it.
<html>
<head>
<title>{{ title }}</title>
</head>
<body>
<form method='post' action='#'>
<fieldset>
Hello <input type='text' name='name' value='{{ name }}'>
<input type='submit' name='submit' value='submit'>
</form>
</body>
</html>
Create a show
See the tutorial above for hwo to do this.
Add this code to a show called myname.
function(doc, req) {
if (doc) {
var ddoc = this
var Mustache = require("vendor/couchapp/lib/mustache");
var data = {
title: "The Name",
name: "Bobbert"
}
return Mustache.to_html(ddoc.templates.myname, data)
} else {
return ('nothing here baby')
}
}
Update the document with a new name by ...
So who can complete this step via both the client side and the server side?
Please don't point me to the guide, I need to read it in your words.
Thanks.
Edit:
Although the return value isn't pretty, just posting a form to the update handler will update the document.
You will probably want to look into update handler functions.
An update handler handles granular document transformations. So you can take 1 form, that has one distinct purpose, and only update the relevant fields in your document via the update handler.
Your update handler will need to take a PUT request from your form. A browser can't do this directly, so you'll need some javascript to handle this for you. If you're using jQuery, this plugin can take your form and submit it seamlessly via AJAX using PUT for you.
Inside the function, you can take the fields you are accepting, in this case name and apply that directly to the document. (input validation can be handled via the validate_doc_update function)
Update Handler (in your Design Document)
{
"updates": {
"name": function (doc, req) {
doc.name = req.form.name;
return [doc, "Name has been updated"];
}
}
}
HTML
<form id="myForm" action="/db/_design/ddoc/_update/name/doc_id">...</form>
JavaScript
$(document).ready(function() {
$('#myForm').ajaxForm({
type: "PUT",
success: function () {
alert("Thank you");
}
});
});
Once you've gotten this basic example up and running, it's not much more difficult to add some more advanced features to your update handlers. :)
Is there anyway to prevent onbeforeunload from being called when clicking on mailto link in chrome.
In FF, Safari, IE it is working fine.
<html>
<head>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js">
google.load("jquery", "1.3.2");
</script>
<script type="text/javascript">
$(document).ready(function(){
window.onbeforeunload = confirmExit;
});
function confirmExit() {
return "Are you sure?";
}
</script>
</head>
<body>
Mail Link
</body>
</html>
What about a workaround?
$(document).ready(function(){
mailtoClicked = false;
window.onbeforeunload = confirmExit;
//Test if browser is Chrome
if (/chrom(e|ium)/.test(navigator.userAgent.toLowerCase())) {
$('a[href^=mailto]').click(function() {mailtoClicked = true;});
}
});
function confirmExit() {
if (!mailtoClicked) {
return "Are you sure?";
} else {
mailtoClicked = false;
}
}
Demo.
Here is a proposed solutions that looks reasonable
http://www.ilovebonnie.net/2009/09/23/how-to-use-onbeforeunload-with-form-submit-buttons/
UPDATE (link is dead) - Copied contents from Google Cache
How to Use onbeforeunload with Form Submit Buttons
September 23rd, 2009 — Geekery
While doing some programming I came across an interesting predicament. While I understand it’s evil to make it hard for a user to leave a page, I’m not here to argue the merits (or lack thereof) of onbeforeunload.
On a particular form, we are forcing the browser to not cache the information to avoid potential AJAX/JavaScript problems if they should leave the form and come back as browsers don’t all act the same (eg IE leaves checkboxes checked but doesn’t remember changes that have occurred to the page due to JavaScript). As such, we warn our users when they’re about to leave the order form to let them know they’ll need to fill it in again.
The function was simple enough:
window.onbeforeunload = function () {
return "You are about to leave this order form. You will lose any information...";
}
Unfortunately, this would also be triggered if the user submitted the form which, is obviously not what we want. After searching around on the Internet I came across a simple solution that I thought I would share:
// Create a variable that can be set upon form submission
var submitFormOkay = false;
window.onbeforeunload = function () {
if (!submitFormOkay) {
return "You are about to leave this order form. You will lose any information...";
}
}
Since onclick appears to register before onsubmit when clicking a submit button, we can add a little variable declaration to our submit button so that submitFormOkay will be set to true before the form submission happens:
<input type="submit" id="submit_button" onclick="submitFormOkay = true;">