$('textarea').focus(function() {
var img = $(this).css('background-image');
$(this).css('background-image', 'none');
});
$('textarea').blur(function() {
$(this).css('background-image', img);
});
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..似乎没有用.我觉得有些不对劲,但我无法弄清楚是什么.
非常感谢您的帮助!
index.php文件:
<? session_start(); ini_set( "display_errors", 0); ?>
.. rest of the page ...
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错误:
Fatal error: Call to undefined function: escapestring() in ... ReviewOrder.php on line 54
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ReviewOrder.php上的第54行是:
foreach ($_REQUEST as $key => $value)
{
if ($value!="") $_SESSION[$key]=escapestring(trim($value)); // line 54
}
Run Code Online (Sandbox Code Playgroud) properties = ["color", "font-size", "font-family", "width", "height"]
inPath = "style.css"
outPath = "output.txt"
#Open a file for reading
file = open(inPath, 'rU')
if file:
# read from the file
filecontents = file.read()
file.close()
else:
print "Error Opening File."
#Open a file for writing
file = open(outPath, 'wb')
if file:
for i in properties:
search = i
index = filecontents.find(search)
file.write(str(index), "\n")
file.close()
else:
print "Error Opening File."
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似乎工作,但是:
function takes exactly 1 argument非常感谢
$('.product-nav li a').click(function() {
$('.product-nav li').removeClass('active');
$(this).parent().addClass('active');
if( $(this).hasClass('tshirts') ){
$('product').hide();
$('.product.tshirt').show();
}
});
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..活动类是否正确分配,但产品没有按需要隐藏/显示,因为我认为点击时无法识别if条件?
我想选择没有类的第一个元素..disabled
我尝试了这些没有成功:
$('.selected:first:not(".disabled")').addClass('first');
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和
$('.selected:first').not(".disabled").addClass('first');
Run Code Online (Sandbox Code Playgroud) foreach ( $custom_fields as $field_key => $field_values ) {
foreach ( $field_values as $key => $value )
echo $field_key . '<br>';
echo '<pre>' , print_r( $value,true) , '</pre>';
}
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虽然我使用的是print_r与<pre>标签,在输出中看起来是这样的:
a:4:{i:0;s:6:"Casual";i:1;s:6:"Serene";i:2;s:6:"Unique";i:3;s:9:"Whimsical";}
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不应该垂直列出适当的缩进?我究竟做错了什么?
localhost:1nbox myusername$ sudo curl -s http://getcomposer.org/installer | phpmamp
#!/usr/bin/env php
All settings correct for using Composer
PHP Fatal error: Uncaught exception 'RuntimeException' with message 'Unable to write bundled cacert.pem to: /Users/myusername/.composer/cacert.pem' in -:403
Stack trace:
#0 -(112): installComposer(false, false, 'composer.phar', false, false, false)
#1 -(14): process(Array)
#2 {main}
thrown in - on line 403
localhost:1nbox myusername$
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我.bash_profile有:
alias phpmamp='/Applications/MAMP/bin/php/php5.6.2/bin/php'
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<span v-if="name">
Hi there, {{ name }}
</span>
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...但它迫使我使用span作为整个文本,我只想在名称变量上使用它.例如,我可以做手把:
{{#if name}}
Hi there, <span>{{ name }}</span>
{{/if}}
Run Code Online (Sandbox Code Playgroud) var promises = []
array.forEach(element, i => {
promises[i] = functionThatReturnsAPromise(element);
if (somecondition) {
promises[i] = new Promise(function(){}); // empty initial promise
waitForSomeValue.then(function(result){
promises[i] = functionThatReturnsAPromise(result); // reassign promise
});
}
});
Promise.all(promises)
.then(function(result){
console.log(result);
});
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由于在某种情况下,我需要先获取值然后返回承诺,所以我要创建一个空的承诺并重新分配它。但是,这是行不通的,也就是说Promise.all永远不会返回结果。我究竟做错了什么?
def solve(numLegs, numHeads):
for numChicks in range(0, numHeads + 1):
numPigs = numHeads - numChicks
totLegs = 4*numPigs + 2*numChicks
if totLegs == numLegs:
return [numPigs, numChicks]
return [None, None]
def barnYard(heads, legs):
pigs, chickens = solve(legs, heads)
if pigs == None:
print "There is no solution."
else:
print 'Number of pigs: ', pigs
print 'Number of Chickens: ', chickens
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我正在学习Python并且遇到了这个例子,有人可以用简单的英语(或伪代码)解释这是一行一行的.
非常感谢
HTML:
<table>
<tr>
<td>
<a href="#">link</a>
</td>
</tr>
</table>
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我想:找到'a'中的'link'和除了'table'之外的STRIP ALL父标签.我知道它不是理想的方法,但有时你只是不能修改标记,所以知道一个jquery hack是很好的.
return $('.card-number').removeClass('valid').addClass('invalid');
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我正在返回一个函数值,我需要两个removeClass并且addClass同时不写两个语句,想知道这是否可能?
我试过这个,但它不起作用:
return $('.card-number').removeClass('valid').end().addClass('invalid');
Run Code Online (Sandbox Code Playgroud) echo '<pre>'.print_r($listings,1).'</pre>';
ksort($listings, SORT_NUMERIC);
echo '<pre>'.print_r($listings,1).'</pre>';
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输出:
Array
(
[quick-brown-fox] => Array
(
[0] => Quick-brown-fox
[1] => quick-brown-fox
[4] => general_thumbs/quick-brown-fox.jpg
[2] => 320
[3] => 240
)
)
Array
(
[quick-brown-fox] => Array
(
[0] => Quick-brown-fox
[1] => quick-brown-fox
[4] => general_thumbs/quick-brown-fox.jpg
[2] => 320
[3] => 240
)
)
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我试过了foreach,但是它不会影响原始数组,for也不会起作用,因为它是键,而不是索引。在这种情况下我该怎么办?
jquery ×5
php ×4
javascript ×2
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arrays ×1
background ×1
class ×1
composer-php ×1
count ×1
css ×1
escapestring ×1
indexing ×1
json ×1
ksort ×1
macos ×1
pretty-print ×1
promise ×1
pseudocode ×1
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vue.js ×1