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How to take screenshot of a div with JavaScript?
I am building something called the "HTML Quiz". It's completely ran on JavaScript and it's pretty cool.
10 Answers
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在MongoDB中模拟Auto Increment - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...MongoDB缺省并没有实现，所以需要模拟一下，编程语言以PHP为例，代码大致如下所示：<?phpfunct...MySQL用户多半都有Auto Increment情结，不过MongoDB缺省并没有实现，所以需要模拟一下，编程语言以PHP为例，代码大致如下所示：
<?php
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How to escape a JSON string to have it in a URL?
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I'll offer an oddball alternative. Sometimes it's easier to use different encoding, especially if you're dealing with a variety of systems that don't all handle the details of URL encoding the same way. This isn't the most mainstream approach ...
Best dynamic JavaScript/JQuery Grid [closed]
...valuating DataTables, but adding rows (and having them be part of the sort order) is not working well.
– MattW
Jan 12 '12 at 14:50
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How to auto-remove trailing whitespace in Eclipse?
...pecific preference that gets stored into your SCM along with the code.
In order to do that right-click on your project and go to Properties -> Java Editor -> Save Actions. From there you can enable project specific settings and configure it to remove trailing whitespace (among other useful t...
How to get random value out of an array?
...ce PHP 5.2.10, see 48224), so your picked items will always be in original order. Use shuffle() afterwards if needed.
Documentation: array_rand(), shuffle()
edit: The Laravel function has noticeably grown since then, see Laravel 5.4's Arr::random(). Here is something more elaborate, derived fro...
How do I use Django templates without the rest of Django?
...r Jinja2 because of {% set %} syntax and equality to Twig template engine (PHP). It's better to write cross platform code always, but the performance difference is not critical - for example, python will always work slower than PHP so if you need performance you better create site with PHP, Twig and...
configure: error: Unable to find gd.h anywhere under /usr/local/gd - ...
configure: error: Unable to find gd.h anywhere under /usr/local/gd安装php时出现configure: error: Unable to find gd.h anywhere under，错误解决在进行PHP开发环境源码安装时，在安装PHP-5.2.6是出...安装php时出现configure: error: Unable to find gd.h anywhere under，错误...
Nginx reverse proxy causing 504 Gateway Timeout
...nd it had to do with not using a keep-alive on the connection. I can't actually answer why this is but, in clearing the connection header I solved this issue and the request was proxied just fine:
server {
location / {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header ...
What text editor is available in Heroku bash shell? [closed]
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I recently turned the original gist into a heroku cli plugin.
Just install:
heroku plugins:install https://github.com/naaman/heroku-vim
And use:
heroku vim
The heroku vim command will drop you into a bash shell with vim installed on your $PATH. All you have to do is retrain your fingers to t...