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How and why does 'a'['toUpperCase']() in JavaScript work?
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foo.bar and foo['bar'] are equal so the code you posted is the same as
alert('a'.toUpperCase())
When using foo[bar] (note tha lack of quotes) you do not use the literal name bar but whatever value the variable bar contains. So using the foo[] notation instead of foo. allows you to use a dynami...
How to suppress Update Links warning?
I'm trying to write a script that opens many Excel files. I keep getting the prompt:
7 Answers
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I need to get all the cookies from the browser
I need to get all the cookies stored in my browser using JavaScript. How can it be done?
9 Answers
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Alarm 闹钟扩展：在指定时间启动App的强大工具 · App Inventor 2 中文网
...后台运行时启动另一个应用程序，需要额外的权限 (SYSTEM_ALERT_WINDOW)（参见 从后台启动活动的限制，最后一点）。此权限无法通过程序设置，必须通过对话框由用户确认（参见 Android 10和小米设备的额外权限）。示例中展示了解...
What does = +_ mean in JavaScript
...how use of =+ to convert a string into int.
example:
y = +'5'
x = y +5
alert(x);
outputs 10
use: So here y is int 5 because of =+
otherwise:
y = '5'
x = y +5
alert(x);
outputs 55
Where as _ is a variable.
_ = + '5'
x = _ + 5
alert(x)
outputs 10
Additionally,
It would be interesting...
Is there any way to call a function periodically in JavaScript?
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You want setInterval():
var intervalID = setInterval(function(){alert("Interval reached");}, 5000);
The first parameter to setInterval() can also be a string of code to be evaluated.
You can clear a periodic function with:
clearInterval(intervalID);
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How can I create a simple message box in Python?
I'm looking for the same effect as alert() in JavaScript.
17 Answers
17
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Detecting a mobile browser
... <= 600 ) );
}
Reference:
Detecting Browser and Devices with javascript
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How to hide command output in Bash
I want to make my Bash scripts more elegant for the end user. How do I hide the output when Bash is executing commands?
7 A...
jQuery and AJAX response header
... it in an iframe, but when I try to view the header info with a javascript alert, it comes up null, even though firebug sees it correctly.
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