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How to add onload event to a div element
...element
Example:
...
<div id="somid">Some content</div>
<script type="text/javascript">
oQuickReply.swap('somid');
</script>
...
or - even better - just in front of </body>:
...
<script type="text/javascript">
oQuickReply.swap('somid');
</script>...
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...
Check if a variable is a string in JavaScript
... is a String";
var stringObject = new String( "This is a String Object" );
alert(typeof booleanValue) // displays "boolean"
alert(typeof numericalValue) // displays "number"
alert(typeof stringValue) // displays "string"
alert(typeof stringObject) // displays "object"
Example from this webpage. (E...
JavaScript Date Object Comparison
...ed, and two objects are never equal to each other. Coerce them to number:
alert( +startDate2 == +startDate3 ); // true
If you want a more explicity conversion to number, use either:
alert( startDate2.getTime() == startDate3.getTime() ); // true
or
alert( Number(startDate2) == Number(startDate3)...
What is this 'Lambda' everyone keeps speaking of?
... {
if (numbers[i] % 2 === 0) {
even.push(numbers[i]);
}
}
alert(even);
// Using the filter method
even = [1, 2, 3, 4].filter(function (number) {
return number % 2 === 0;
});
alert(even);
Code execution delay
In some environments, in which the concept of event is available, ...
What should every JavaScript programmer know? [closed]
Is there a set of things that every JavaScript programmer should know to be able to say "I know JavaScript"?
30 Answers
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How to determine whether an object has a given property in JavaScript
...roperty, opts)) {
throw new Error("IllegalArgumentException");
}
alert("ok");
}
f({req1: 123}); // error
f({req1: 123, req2: 456}); // ok
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MQTT物联网协议完全实践指南 · App Inventor 2 中文网
...create list
"greenhouse/status/system",
"greenhouse/status/alerts",
"greenhouse/status/device_status"
2. 连接管理与重连机制
// 智能连接管理
when Screen1.Initialize
do
set MaxRetryCount to 5
set CurrentRetry to 0
set Reconne...
How to loop through array in jQuery?
...e odds are you'd have other problems; details).
ES5's forEach:
As of ECMAScript5, arrays have a forEach function on them which makes it easy to loop through the array:
substr.forEach(function(item) {
// do something with `item`
});
Link to docs
(Note: There are lots of other functions, not...
How to play ringtone/alarm sound in Android
...ill get an error - Failed to open ringtone content://settings/system/alarm_alert
– Pritesh Desai
Feb 10 '13 at 19:19
3
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