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javascript i++ vs ++i [duplicate]
...value of ++i is the value of i after the increment.
Example:
var i = 42;
alert(i++); // shows 42
alert(i); // shows 43
i = 42;
alert(++i); // shows 43
alert(i); // shows 43
The i-- and --i operators works the same way.
s...
Checking for a dirty index or untracked files with Git
...ks easily!! see @ChrisJohnsen 's answer, which correctly uses the stable, script-friendly options.
– mike
Oct 12 '15 at 21:54
8
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get an element's id
...ElementsByTagName("input");
for (var i = 0; i < inputs.length; i++) {
alert(inputs[i].id);
}
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How can I test if a letter in a string is uppercase or lowercase using JavaScript?
...g josh
var character = '5';
if (character == character.toUpperCase()) {
alert ('upper case true');
}
if (character == character.toLowerCase()){
alert ('lower case true');
}
another way is to test it first if it is numeric, else test it if upper or lower case
example
var strings = 'this iS a ...
Run JavaScript code on window close or page refresh?
Is there a way to run a final JavaScript code when a user closes a browser window or refreshes the page?
8 Answers
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How to calculate number of days between two dates
...Try this Using moment.js (Its quite easy to compute date operations in javascript)
firstDate.diff(secondDate, 'days', false);// true|false for fraction value
Result will give you number of days in integer.
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Catch checked change event of a checkbox
... />
$("#something").click( function(){
if( $(this).is(':checked') ) alert("checked");
});
Edit: Doing this will not catch when the checkbox changes for other reasons than a click, like using the keyboard. To avoid this problem, listen to changeinstead of click.
For checking/unchecking prog...
How to style the option of an html “select” element?
...r other elements (usually an ul) and duplicate select functionality in JavaScript for full control over styles.
– Benjamin Robinson
Jul 14 '16 at 17:37
3
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Is it possible to add an HTML link in the body of a MAILTO link [duplicate]
... create an HTML email.
This is probably for security as you could add javascript or iframes to this link and the email client might open up the end user for vulnerabilities.
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Check if object exists in JavaScript
... returns a string.
Therefore
if (typeof maybeObject != "undefined") {
alert("GOT THERE");
}
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