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How to return value from an asynchronous callback function? [duplicate]
...ults[0].geometry.location);
});
}
foo("address", function(location){
alert(location); // this is where you get the return value
});
The thing is, if an inner function call is asynchronous, then all the functions 'wrapping' this call must also be asynchronous in order to 'return' a response.
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How to check if a JavaScript variable is NOT undefined? [duplicate]
...
var lastname = "Hi";
if(typeof lastname !== "undefined")
{
alert("Hi. Variable is defined.");
}
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Eclipse reported “Failed to load JNI shared library” [duplicate]
I can't open Eclipse because I get an alert that says
4 Answers
4
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Access the css “:after” selector with jQuery [duplicate]
...ch your :after CSS selector.
$('.active').after().click(function () {
alert('clickable!');
});
See the jQuery documentation.
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Check if all checkboxes are selected
...checkbox'].abc");
if(a.length == a.filter(":checked").length){
alert('all checked');
}
});
All this will do is verify that the total number of .abc checkboxes matches the total number of .abc:checked.
Code example on jsfiddle.
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How to check if two arrays are equal with JavaScript? [duplicate]
... provided example:
var a=[1,2,3];
var b=[3,2,1];
var c=new Array(1,2,3);
alert(_.isEqual(a, b) + "|" + _.isEqual(b, c));
By the way: Underscore has lots of other methods that jQuery is missing as well, so it's a great complement to jQuery.
EDIT: As has been pointed out in the comments, the abov...
jquery variable syntax [duplicate]
...st a character that may be used in variable names.
var $ = 1;
var $$ = 2;
alert($ + $$);
jQuery just assigns it's core function to a variable called $. The code you have assigns this to a local variable called self and the results of calling jQuery with this as an argument to a global variable ca...
How to use setInterval and clearInterval?
...rval(doStuff, 2000); // 2000 ms = start after 2sec
function doStuff() {
alert('this is a 2 second warning');
clearInterval(interval);
}
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Is there a Sleep/Pause/Wait function in JavaScript? [duplicate]
...se setTimeout to kick off a function after a delay:
setTimeout(function(){alert("hi")}, 1000);
Depending on your needs, setInterval might be useful, too.
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Linux日志切分工具：Logrotate - 更多技术 - 清泛网 - 专注C/C++及内核技术
...TVALUE=$?
if [ $EXITVALUE != 0 ]; then
/usr/bin/logger -t logrotate "ALERT exited abnormally with [$EXITVALUE]"
fi
exit 0
实际运行时，Logrotate会调用配置文件「/etc/logrotate.conf」：
# see "man logrotate" for details
# rotate log files weekly
weekly
# keep 4 weeks wo...