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Take a screenshot of a webpage with JavaScript?
... to build the control in VB6 to take the screenshot. I had to use the keybd_event API call because SendKeys can't do PrintScreen. Here's the code for that:
Declare Sub keybd_event Lib "user32" _
(ByVal bVk As Byte, ByVal bScan As Byte, ByVal dwFlags As Long, ByVal dwExtraInfo As Long)
Public Const...
How to obtain the query string from the current URL with JavaScript?
...href);
myfunction("http://www.myname.com/index.html?id=dance&emp;cid=in_social_facebook-hhp-food-moonlight-influencer_s7_20160623");
here is the fiddle
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Selecting data frame rows based on partial string match in a column
...matching. Here's an example with the mtcars dataset, where we are matching all rows where the row names includes "Merc":
mtcars[grep("Merc", rownames(mtcars)), ]
mpg cyl disp hp drat wt qsec vs am gear carb
# Merc 240D 24.4 4 146.7 62 3.69 3.19 20.0 1 0 4 2
# Merc 230 ...
Java 8 Iterable.forEach() vs foreach loop
...
prev = curr;
}
Can't handle checked exceptions. Lambdas aren't actually forbidden from throwing checked exceptions, but common functional interfaces like Consumer don't declare any. Therefore, any code that throws checked exceptions must wrap them in try-catch or Throwables.propagate(). But ...
Ship an application with a database
... for creating and updating databases.
One is to create a database externally, then place it in the assets folder of the project and then copy the entire database from there. This is much quicker if the database has a lot of tables and other components. Upgrades are triggered by changing the dat...
Regex to match string containing two names in any order
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IF $_explanation === "awesome" THEN return $THUMBS_UP ENDIF;
– Syed Aqeel
Feb 20 '19 at 6:08
add a comme...
普通码农和CTO之间的差距，就是这7点了 - 杂谈 - 清泛网 - 专注C/C++及内核技术
...那么我们的沟通能力应该足够我们搞定“萌妹子”的。^_^
学习技术而不是工具
在新框架，新方法，新工具横行的今天我们很难判断出哪些是“技术”，哪些是“工具”。我个人认为程序员不存在——Java程序员、Python程序员、A...
jQuery Mobile: document ready vs. page events
...date:
My original article was intended for old way of page handling, basically everything before jQuery Mobile 1.4. Old way of handling is now deprecated and it will stay active until (including) jQuery Mobile 1.5, so you can still use everything mentioned below, at least until next year and jQuery...
Checking if object is empty, works with ng-show but not from controller?
...
Or, if using lo-dash: _.empty(value).
"Checks if value is empty. Arrays, strings, or arguments objects with a length of 0 and objects with no own enumerable properties are considered "empty"."
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How to send a JSON object using html form data
...l form data then you have to decode it using json_decode. You'll then get all data in an array.
$.ajax({
type: "POST",
url: "serverUrl",
data: formData,
success: function(){},
dataType: "json",
contentType : "application/json"
});
...