大约有 30,000 项符合查询结果（耗时：0.0494秒） [XML]
Use of .apply() with 'new' operator. Is this possible?
...native constructors that behave differently when called as functions, like String, Number, Date, etc.) with an array of arguments:
function construct(constructor, args) {
function F() {
return constructor.apply(this, args);
}
F.prototype = constructor.prototype;
return new F...
Turn off spell checking in Eclipse for good
... Thanks. This is what really annoys me with Eclipse. Somebody has decided what the default Preferences are and there is no way for us to change them. So we are left with this quite complicated maneuver every time we open up a new workspace.
– darius
Jun 1...
How to Correctly Use Lists in R?
...s not a problem :-). Your example is a bit simple, in that when you do the string-split, you have a list with elements that are 1 element long, so you know that x[[1]] is the same as unlist(x)[1]. But what if the result of strsplit returned results of different length in each bin. Simply returning a...
AngularJS validation with no enclosing
Is it possible in Angular to validate a single, isolated <input> in a similar way the forms are validated? I'm thinking about something like this:
...
Rails: create on has_one association
...op.create(params[:shop])
@user.shop = @shop
Now here's why your version did not work:
You probably thought that this might work because if User had a has_many relation to Shop, @user.shops.create(params[:shop]) would work. However there is a big difference between has_many relations and has_one r...
Maintain the aspect ratio of a div with CSS
I want to create a div that can change its width/height as the window's width changes.
27 Answers
...
Iterate through options
...
$("#selectId > option").each(function() {
alert(this.text + ' ' + this.value);
});
http://api.jquery.com/each/
http://jsfiddle.net/Rx3AP/
share
...
Why would $_FILES be empty when uploading files to PHP?
.../form-data uploads.
Make sure your file input tag has a NAME attribute. An ID attribute is NOT sufficient! ID attributes are for use in the DOM, not for POST payloads.
Make sure you are not using Javascript to disable your <input type="file"> field on submission
Make sure you're not nesting fo...
Javascript call() & apply() vs bind()?
...erence in call and apply is. in call you pass arguments as comma separated strings, while in apply you can pass arguments in form of array. rest the are same.
– Ashish Yadav
Feb 15 '17 at 7:43
...
How do you get the logical xor of two variables in Python?
...nots first like this (not b and a) or (not a and b) so that it returns the string if there was one, which seems like the pythonic way for the function to operate.
– rjmunro
May 7 '11 at 21:06
...