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How to check if a query string value is present via JavaScript?
...Just to clarify, this works great if(/[?&]q=/.test(location.search)) { alert("match"); } (I was a bit confused due to @DragosDurlut comment. :)
– Leia
Apr 24 '17 at 4:24
1
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How are people unit testing with Entity Framework 6, should you bother?
...n a known state with each test. Most systems use either a backup or create scripts for this.
Each test must be repeatable
Each test must be atomic
There are two main approaches to setting up your database, the first is to run a UnitTest create DB script. This ensures that your unit test database w...
What is the difference between String.slice and String.substring?
.... Too large values are truncated to the length of the string:
alert ( "testme" .substring (-2)); // "testme", -2 becomes 0
Furthermore, if start > end, the arguments are interchanged, i.e. plot line returns between the start and end:
alert ( "testme" .substring (4, -1)); // "test"
...
How to initialize an array's length in JavaScript?
...}) gives you an array with length 5 and values 0,1,2,3,4.
Array(5).forEach(alert) does nothing, Array.apply(null, Array(5)).forEach(alert) gives you 5 alerts
ES6 gives us Array.from so now you can also use Array.from(Array(5)).forEach(alert)
If you want to initialize with a certain value, these are ...
Asynchronous Process inside a javascript for loop [duplicate]
...j = 10;
for (i = 0; i < j; i++) {
await asycronouseProcess();
alert(i);
}
Remember, this works only if asycronouseProcess is returning a Promise
If asycronouseProcess is not in your control then you can make it return a Promise by yourself like this
function asyncProcess() {
ret...
How Can I Browse/View The Values Stored in Redis [closed]
...
Windows and OS X binaries now require a subscription.
– Somantra
Dec 18 '18 at 17:55
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.keyCode vs. .which
...', function(event,handler){
switch(handler.key){
case "ctrl+a":alert('you pressed ctrl+a!');break;
case "ctrl+b":alert('you pressed ctrl+b!');break;
case "r":alert('you pressed r!');break;
case "f":alert('you pressed f!');break;
}
});
hotkeys understands the...
Custom attributes - Yea or nay?
...mainly for the purpose of embedding some extra bits of data for use in javascript code.
14 Answers
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Pass parameters in setInterval function
...the "spread" operator
function repeater(param1, param2, param3){
alert(param1);
alert(param2);
alert(param3);
}
let input = [1,2,3];
setInterval(repeater,3000,...input);
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Formatting a number with exactly two decimals in JavaScript
...adays, you can use the Intl.NumberFormat constructor. It's part of the ECMAScript Internationalization API Specification (ECMA402). It has pretty good browser support, including even IE11, and it is fully supported in Node.js.
const formatter = new Intl.NumberFormat('en-US', {
minimumFraction...