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How to unset a JavaScript variable?
I have a global variable in JavaScript (actually a window property, but I don't think it matters) which was already populated by a previous script but I don't want another script that will run later to see its value or that it was even defined.
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How to make script execution wait until jquery is loaded
...t jquery hasn't finished loading before it is being called by a subsequent script. Is there a way to check for the existence of jquery and if it doesn't exist, wait for a moment and then try again?
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How to get the data-id attribute?
...ry's data object. ... Every attempt is made to convert the string to a JavaScript value (this includes booleans, numbers, objects, arrays, and null). A value is only converted to a number if doing so doesn't change the value's representation. For example, "1E02" and "100.000" are equivalent as numbe...
How to add jQuery in JS file
...
var script = document.createElement('script');
script.src = 'https://code.jquery.com/jquery-3.4.1.min.js';
script.type = 'text/javascript';
document.getElementsByTagName('head')[0].appendChild(script);
...
JavaScript sleep/wait before continuing [duplicate]
I have a JavaScript code that I need to add a sleep/wait function to. The code I am running is already in a function, eg:
1...
How to retrieve checkboxes values in jQuery
...t have the name "chkboxName" in comma separate string
And here is the javascript
function showSelectedValues()
{
alert($("input[name=chkboxName]:checked").map(
function () {return this.value;}).get().join(","));
}
Here is the HTML sample
<html>
<head>
</head>
<bo...
Get the size of the screen, current web page and browser window
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@Marco Kerwitz The worst thing is that I typed "javascript get window width" and the content of this answer was on Google. A big minus one from me.
– Maciej Krawczyk
Jun 11 '16 at 7:43
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Comparing date part only without comparing time in JavaScript
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I'm still learning JavaScript, and the only way that I've found which works for me to compare two dates without the time is to use the setHours method of the Date object and set the hours, minutes, seconds and milliseconds to zero. Then compare the...
Warn user before leaving web page with unsaved changes
...vant keypresses like the Ctrl key.
Won't trigger on values set through JavaScript code.
Won't trigger on cutting or pasting text through context menus.
Won't work for virtual inputs like datepickers or checkbox/radiobutton beautifiers which save their value in a hidden input through JavaScript.
Th...
TypeScript: casting HTMLElement
Does anyone know how to cast in TypeScript?
13 Answers
13
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