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Android中Java和JavaScript交互 - 更多技术 - 清泛网 - 专注C/C++及内核技术
Android中Java和JavaScript交互interaction-between-java-and-javascript-in-androidAndroid提供了一个很强大的WebView控件用来处理Web网页，而在网页中，JavaScript又是一个很举足轻重的脚本。本文将介绍如何实现Java代码和Javascript代码的相互调用。如...
How do I detect IE 8 with jQuery?
...forget that you can also use HTML to detect IE8.
<!--[if IE 8]>
<script type="text/javascript">
ie = 8;
</script>
<![endif]-->
Having that before all your scripts will let you just check the "ie" variable or whatever.
...
Difference between $(document.body) and $('body')
...ferences the direct object on the document.
That means if you (or a rogue script) overwrites the document.body element (shame!) $('body') will still work, but $(document.body) will not. So by definition they're not equivalent.
I'd venture to guess there are other edge cases (such as globally id'ed...
How to set background color of HTML element using css properties in JavaScript
How can I set the background color of an HTML element using css in JavaScript?
17 Answers
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jquery $(window).width() and $(window).height() return different values when viewport has not been r
...eared so briefly that they could not be seen except in debug mode with the script paused in mid-execution. once I removed the above variables and function, some elements still jumped from position - it had to do with the order of script steps - I just had to make sure I reset the div holding my inse...
How to create a directory using nerdtree
...ory you want to create, making sure to add a '/' at the end, otherwise the script would create a file.
AFAIK NERDTree cannot create parent directories like 'mkdir -p' does.
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Working with huge files in VIM
...
I wrote a little script based on Florian's answer that uses nano (my favorite editor):
#!/bin/sh
if [ "$#" -ne 3 ]; then
echo "Usage: $0 hugeFilePath startLine endLine" >&2
exit 1
fi
sed -n -e $2','$3'p' -e $3'q' $1 > hfnano_...
What blocks Ruby, Python to get Javascript V8 speed? [closed]
...
What blocks Ruby, Python to get Javascript V8 speed?
Nothing.
Well, okay: money. (And time, people, resources, but if you have money, you can buy those.)
V8 has a team of brilliant, highly-specialized, highly-experienced (and thus highly-paid) engineers wor...
Real mouse position in canvas [duplicate]
...er to simplify cross-browser compatibility, but if you want to use raw javascript a quick Google will get that too).
var canvasOffset=$("#canvas").offset();
var offsetX=canvasOffset.left;
var offsetY=canvasOffset.top;
Then in your mouse handler, you can get the mouse X/Y like this:
...
How do I use sudo to redirect output to a location I don't have permission to write to?
... the -c option:
sudo sh -c 'ls -hal /root/ > /root/test.out'
Create a script with your commands and run that script with sudo:
#!/bin/sh
ls -hal /root/ > /root/test.out
Run sudo ls.sh. See Steve Bennett's answer if you don't want to create a temporary file.
Launch a shell with sudo -s the...