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Check that Field Exists with MongoDB
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Suppose we have a collection like below:
{
"_id":"1234"
"open":"Yes"
"things":{
"paper":1234
"bottle":"Available"
"bottle_count":40
}
}
We want to know if the bottle field is present or not?
Ans:
db.products.fi...
How do I go straight to template, in Django's urls.py?
... 'direct_to_template', {'template': 'foo_index.html'}),
(r'^foo/(?P<id>\d+)/$', 'direct_to_template', {'template': 'foo_detail.html'}),
)
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How to position text over an image in css
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How about something like this: http://jsfiddle.net/EgLKV/3/
Its done by using position:absolute and z-index to place the text over the image.
#container {
height: 400px;
width: 400px;
position: relative;
}
#image {
position: absolute;
left: 0;...
JavaScript moving element in the DOM
...y, you'll need to use different selectors since the divs will retain their ids as they are moved around.
$(function() {
setInterval( function() {
$('div:first').insertAfter($('div').eq(2));
$('div').eq(1).insertBefore('div:first');
}, 3000 );
});
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$(this).val() not working to get text from span using jquery
...retrieve text of an auto generated span value just do this :
var al = $("#id-span-name").text();
alert(al);
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jQuery equivalent of getting the context of a Canvas
...TML element:
var myCanvasElem = $("#canvas").get(0);
Perhaps to help avoid any potential null object references since jquery returns null as an object but working with the element from .get(0) may not fail so silently... You can easily check if the canvas was found first before .get(0) like
if...
Global variables in Javascript across multiple files
A bunch of my JavaScript code is in an external file called helpers.js. Inside the HTML that calls this JavaScript code I find myself in need of knowing if a certain function from helpers.js has been called.
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jQuery find element by data attribute value
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Use Attribute Equals Selector
$('.slide-link[data-slide="0"]').addClass('active');
Fiddle Demo
.find()
it works down the tree
Get the descendants of each element
in the current set of matched elements, filtered by a selector, jQuery object, or elemen...
How to stop “setInterval” [duplicate]
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You have to store the timer id of the interval when you start it, you will use this value later to stop it, using the clearInterval function:
$(function () {
var timerId = 0;
$('textarea').focus(function () {
timerId = setInterval(function () ...
How to assign multiple classes to an HTML container? [closed]
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From the standard
7.5.2 Element identifiers: the id and class attributes
Attribute definitions
id = name [CS]
This attribute assigns a name to an element. This name
must be unique in a document.
class = cdata-list [CS]
This attribute
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