大约有 35,406 项符合查询结果（耗时：0.0473秒） [XML]
Show an image preview before upload
... // read the image file as a data URL.
reader.readAsDataURL(this.files[0]);
};
Here's a good article on using the File APIs in JavaScript.
The code snippet in the HTML example below filters out images from the user's selection and renders selected files into multiple thumbnail previews:
...
JavaScript seconds to time string with format hh:mm:ss
...tring.prototype.toHHMMSS = function () {
var sec_num = parseInt(this, 10); // don't forget the second param
var hours = Math.floor(sec_num / 3600);
var minutes = Math.floor((sec_num - (hours * 3600)) / 60);
var seconds = sec_num - (hours * 3600) - (minutes * 60);
if (hours &...
Performance difference for control structures 'for' and 'foreach' in C#
...
130
Well, it partly depends on the exact type of list. It will also depend on the exact CLR you're u...
Custom Python list sorting
...
60
It's documented here.
The sort() method takes optional arguments for controlling the
comp...
What's the difference between “mod” and “remainder”?
... |
edited Jul 18 '13 at 20:13
Grijesh Chauhan
51.1k1515 gold badges117117 silver badges179179 bronze badges
...
Linear Layout and weight in Android
...
answered Apr 23 '10 at 17:08
JeremyFromEarthJeremyFromEarth
14.1k44 gold badges2929 silver badges4646 bronze badges
...
Multiprocessing - Pipe vs Queue
...ts using Pipe() and Queue()... This is on a ThinkpadT61 running Ubuntu 11.10, and Python 2.7.2.
FYI, I threw in results for JoinableQueue() as a bonus; JoinableQueue() accounts for tasks when queue.task_done() is called (it doesn't even know about the specific task, it just counts unfinished tasks ...
C dynamically growing array
...lSize) {
a->array = malloc(initialSize * sizeof(int));
a->used = 0;
a->size = initialSize;
}
void insertArray(Array *a, int element) {
// a->used is the number of used entries, because a->array[a->used++] updates a->used only *after* the array has been accessed.
// Th...
How do you do a deep copy of an object in .NET? [duplicate]
...= new BinaryFormatter();
formatter.Serialize(ms, obj);
ms.Position = 0;
return (T) formatter.Deserialize(ms);
}
}
Notes:
Your class MUST be marked as [Serializable] for this to work.
Your source file must include the following code:
using System.Runtime.Serialization.Formatters.Bin...
Zoom in on a point (using scale and translate)
...|
edited Jul 14 '16 at 18:05
John Weisz
20.9k88 gold badges6767 silver badges109109 bronze badges
answer...