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How can I set the default value for an HTML element?
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The ="selected" part is not necessary. Just <option selected> will do as mentioned in other answers.
– MindJuice
Nov 11 '14 at 16:59
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为AppInventor2开发自己的拓展(Extension) - App Inventor 2 拓展 - 清泛IT社区，为创新赋能！
...早已提供已下载好的工程源码，关注页面顶部公众号（或搜索“fun123cn”关注），回复“源码”即可免费下载。代码编写采用自己较为熟悉的java开发环境就行，这里推荐使用VSCode，拓展目录在 appinventor-sources/appinventor/components ，...
How to abort an interactive rebase if --abort doesn't work?
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Try to follow the advice you see on the screen, and first reset your master's HEAD to the commit it expects.
git update-ref refs/heads/master b918ac16a33881ce00799bea63d9c23bf7022d67
Then, abort the rebase again.
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SVG drop shadow using css3
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<filter id="dropshadow" height="130%">
<feGaussianBlur in="SourceAlpha" stdDeviation="3"/> <!-- stdDeviation is how much to blur -->
<feOffset dx="2" dy="2" result="offsetblur"/> <!-- how much to offset -->
<feComponentTransfer>
<feFuncA type="linear...
“Variable” variables in Javascript?
... for defining multiple values: var x=1; var x,y=2; x=1; var x=1,y=2; var x=xx=1; var y=x+x;
– Amin Maleki
Apr 30 '19 at 15:40
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Error:(1, 0) Plugin with id 'com.android.application' not found
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dependencies {
classpath 'com.android.tools.build:gradle:0.xx.y'
}
}
allprojects {
repositories {
mavenCentral()
}
}
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Inserting string at position x of another string
...e it on any string object:
var my_string = "abcd";
my_string.insertAt(1, "XX");
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How to change UIPickerView height
...ite radical to get the effect of a smaller picker which works in both OS 3.xx and OS 4.0. I left the picker to be whatever size the SDK decides it should be and instead made a cut-through transparent window on my background image through which the picker becomes visible. Then simply placed the picke...
what’s the difference between Expires and Cache-Control headers?
... prevents request-peaks to your origin-server: With "Expires Wed, 30 Oct 20xx 04:37:07 GMT" all browsers will request you at the same time.
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Dialog throwing "Unable to add window — token null is not for an application” with getApplication()
...u may sometimes need to store "this" globally, (for example) in order to access it within a listener's implemented method who has it's own 'this'. In that case, you'd define "Context context" globally, and then in the onCreate, set "context = this", and then refer to "context". Hope that comes in ha...