大约有 10,000 项符合查询结果（耗时：0.0299秒） [XML]
Difference between fold and reduce?
...ble accumulator:
// Intersect a list of sets altogether
let intersectMany xss = List.reduce (fun acc xs -> Set.intersect acc xs) xss
In general, fold is more powerful with an accumulator of an arbitrary type:
// Reverse a list using an empty list as the accumulator
let rev xs = List.fold (fun...
How to use Checkbox inside Select Option
... element but you can get the same functionality by using HTML, CSS and JavaScript. Here is a possible working solution. The explanation follows.
Code:
var expanded = false;
function showCheckboxes() {
var checkboxes = document.getElementById("checkboxes");
if (!expanded) {
ch...
How to impose maxlength on textArea in HTML using JavaScript
... is: either FF or IE (I think it's FF) returns a different string when Javascript checks the "value" attribute than what it sends back to the server when the form is posted! It has something to do with how hard line breaks do/don't get a carriage return character inserted. It's easy to figure out wi...
Detect the Enter key in a text input field
... @jQuerybeast It's not needed, and event.keyCode is a Number, so JavaScript will take the same steps with == or ===.
– alex
Aug 15 '11 at 1:47
7
...
Can I call jquery click() to follow an link if I haven't bound an event handler to it with bind
I have a timer in my JavaScript which needs to emulate clicking a link to go to another page once the time elapses. To do this I'm using jQuery's click() function. I have used $().trigger() and window.location also, and I can make it work as intended with all three.
...
Get checkbox value in jQuery
...ert("Checkbox state (method 2) = " + $('#test').is(':checked'));
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
Check me: <input id="test" type="checkbox" />
...
Sending multipart/formdata with jQuery.ajax
I've got a problem sending a file to a serverside PHP-script using jQuery's ajax-function.
It's possible to get the File-List with $('#fileinput').attr('files') but how is it possible to send this Data to the server? The resulting array ( $_POST ) on the serverside php-script is 0 ( NULL ) when us...
Validate that end date is greater than start date with jQuery
...art date textbox.
Add an endDate class to your end date textbox.
Add this script block to your page:-
<script type="text/javascript">
$(document).ready(function() {
$.validator.addMethod("endDate", function(value, element) {
var startDate = $('.startDate').val();
...
How to detect idle time in JavaScript elegantly?
Is it possible to detect " idle " time in JavaScript?
My primary use case probably would be to pre-fetch or preload content.
...
Check if user is using IE
...
Use below JavaScript method :
function msieversion()
{
var ua = window.navigator.userAgent;
var msie = ua.indexOf("MSIE ");
if (msie > 0) // If Internet Explorer, return version number
{
alert(parseInt(ua.sub...