大约有 44,000 项符合查询结果（耗时：0.0230秒） [XML]
jQuery - prevent default, then continue default
... to the actual submission.
For example:
$('form').submit(function(){
alert('I do something before the actual submission');
return true;
});
Simple example
Another example on jquery.com: http://api.jquery.com/submit/#entry-examples
...
heroku - how to see all the logs
...me you can use one of the many logging add-ons that provide log retention, alerting and triggers.
Lastly, if you want to store the log files yourself you can setup your own syslog drain to receive the stream of events from Heroku and post-process/analyze yourself.
Summary: Don't use heroku console...
Maximum size of an Array in Javascript
..., 7, 8];
if (longArray.length >= 6) {
longArray.length = 3;
}
alert(longArray); //1, 2, 3
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How do I merge two javascript objects together in ES6+?
... b = {age: {value: 37, writeable: true}};
Object.defineProperties(a, b);
alert(a.age); // 37
MDN documentation: https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Object/defineProperties
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Error : BinderProxy@45d459c0 is not valid; is your activity running?
...with minor changes as follows:
if (!MainActivity.this.isFinishing()){
alertDialog.show();
}
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history.replaceState() example?
... if (typeof e.state == "object" && e.state.foo == "bar") {
alert("Blah blah blah");
}
};
window.history.go(-1);
and search location.hash;
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jQuery trigger file input
...cument).ready(function() {
$('#myfile').change(function(evt) {
alert($(this).val());
});
});
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Return positions of a regex match() in Javascript?
...
var str = 'my string here';
var index = str.match(/here/).index;
alert(index); // <- 10
I have successfully tested this all the way back to IE5.
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Check if a number has a decimal place/is a whole number
...re it to zero like so:
function Test()
{
var startVal = 123.456
alert( (startVal - Math.floor(startVal)) != 0 )
}
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Converting an object to a string
... as JSON.
var object = {};
object.first = "test";
object.second = "test2";
alert(object.toSource());
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