大约有 40,000 项符合查询结果（耗时：0.0526秒） [XML]
Resize HTML5 canvas to fit window
...itle>
<script type="text/javascript">
function resize_canvas(){
canvas = document.getElementById("canvas");
if (canvas.width < window.innerWidth)
{
canvas.width = window.innerWidth;
}
if (canvas.h...
jQuery: checking if the value of a field is null (empty)
... "NULL". You want to check if it's an empty string instead:
if ($('#person_data[document_type]').val() != ''){}
or:
if ($('#person_data[document_type]').val().length != 0){}
If you want to check if the element exist at all, you should do that before calling val:
var $d = $('#person_data[docum...
How to stop /#/ in browser with react-router?
... get rid of this query param at the end? http://localhost:8080/#/dashboard?_k=yqwtyu
– Con Antonakos
Mar 17 '16 at 2:40
...
How to validate an email address in PHP
...t way to check whether an email address is well-formed is to use the filter_var() function:
if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
// invalid emailaddress
}
Additionally you can check whether the domain defines an MX record:
if (!checkdnsrr($domain, 'MX')) {
// domain is not v...
HTTP Error 503. The service is unavailable. App pool stops on accessing website
... answered Oct 25 '16 at 8:39
1_bug1_bug
4,02033 gold badges3636 silver badges4646 bronze badges
...
How can I create an array with key value pairs?
...bracket syntax:
if (!empty($row["title"])) {
$catList[$row["datasource_id"]] = $row["title"];
}
$row["datasource_id"] is the key for where the value of $row["title"] is stored in.
share
|
imp...
How to perform a mysqldump without a password prompt?
... the config file via --defaults-file. Like ` mysqldump --defaults-file=my_other.cnf --print-defaults`
– dennis
Jul 23 '13 at 12:46
...
What Android tools and methods work best to find memory/resource leaks? [closed]
...ns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/RootView"
>
...
Then, on the onDestroy() method of your Activity, call the unbindDrawables() method passing a refence to the ...
How can I handle R CMD check “no visible binding for global variable” notes when my ggplot2 syntax i
...
Have you tried with aes_string instead of aes? This should work, although I haven't tried it:
aes_string(x = 'x.values', y = 'y.values')
share
|
...
UINavigationController without navigation bar?
... edited Apr 9 at 15:30
iluvatar_GR
7561010 silver badges1818 bronze badges
answered Apr 23 '11 at 18:14
Ashwi...