我想在构造函数中添加条件角度if(angle>360){ angle=0; }怎么办？
PLAYER[i] = {
color: "#fff",
x: 220*i,
y: 270,
width: 32,
height: 32,
angle: 180
};
每次使用这样的条件,都需要很大的空间.
我有以下变量:
a = {y: 3, color: colors[0]};
b = {y: 5, color: colors[0]};
c = {y: 5, color: colors[0]};
d = {y: 3, color: colors[0]};
我想要这样的东西:
r = {y: 3, color: colors[0]},
{y: 5, color: colors[0]},
{y: 5, color: colors[0]},
{y: 3, color: colors[0]};
我如何用这四个变量做到这一点？我尝试过类似的东西:
r = a+b+c+d;
但这不起作用.
谢谢
这是主要问题:
var obj = {
"22": false,
"32": true,
}
console.log(obj.32) //<---- NOT WORKING??!?!?!
为什么我不能到达对象的一部分？
我知道你不能用数字开始变量,但你可以用对象部分,所以我怎么能读到这个？
正如标题所述:\n阅读文件时为什么包括在内？
我发现了很多关于如何删除它的信息 - 但是没有关于它为什么存在的信息.
CREATE TABLE 'categories'(
'id' SMALLINT NOT NULL AUTO_INCREMENT,
'category' VARCHAR(30) NOT NULL,
PRIMARY KEY ('id'),
UNIQUE KEY 'category' ('category')
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
CREATE TABLE 'orders' (
'id' INT UNSIGNED NOT NULL AUTO_INCREMENT,
'user_id' INT UNSIGNED NOT NULL,
'transaction_id' VARCHAR(19) NOT NULL,
'payment_status' VARCHAR(15) NOT NULL,
'payment_amount' DECIMAL(6,2) UNSIGNED NOT NULL,
'payment_date_time' TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
PRIMARY KEY ('id'),
KEY 'user_id' ('user_id')
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
CREATE TABLE 'pages' (
'id' MEDIUMINT UNSIGNED NOT NULL AUTO_INCREMENT,
'category_id' SMALLINT UNSIGNED …我在php中使用crypt函数生成了这个哈希:
$1$jV3.NS/.$JLVMBWe0N/W0Rbft4NgPV.
我知道$1$是MD5的哈希,jV3.NS/.是盐,其他文本是加密字符串.如果我知道盐,可以解密这个哈希吗？
<html>
<head>
<title>Greatest of three</title>
</head>
<body>
<script type="text/javascript">
var a = parseInt(prompt("Enter A"));
var b = parseInt(prompt("Enter B"));
var c = parseInt(prompt("Enter C"));
if(a == b && b == c)
document.write("A , B and C are equal! Give distinct numbers.")
else if(a == b)
document.write("A and B are equal! Give distinct numbers.");
else if(b == c)
document.write("B and C are equal! Give distinct numbers.");
else if(c == a)
document.write("A and C are equal! Give distinct numbers.");
else if(a > …我需要帮助将此代码转换为PHP.
var formula = [10,6.7,3.4];
var user1 = [1,0,2,1,1,0,2,2,2,2];
var user2 = [2,1,2,0,1,2,2,2,0,0];
var result = 0;
calculate();
function calculate(){
for(var i=0; i<user1.length; i++){
result +=formula[Math.abs(user1[i]-user2[i])]
}
}
alert(result);
PHP代码:
<?php
$formula = array(10,6.7,3.4);
$user1 = array(1,0,2,1,1,0,2,2,2,2);
$user2 = array(2,1,2,0,1,2,2,2,0,0);
$result = 0;
function calculate(){
for($i=0, $size = count($user1); $i<$size; $i++){
$result += $formula(abs($user1[$i]-$user2[$i]));
}
}
calculate();
echo $result;
?>
PHP代码不起作用.请帮帮我.
我需要在随机字母字符串中找到一个单词.例如,找到"pass"以下字符串
asjh;ssdf2222fasdfpasslkjsdfk.^%£$fh
需要一些正则表达式的帮助!
我有
$array = array("Apple", "Elephant", "Cat", "Banana", "Dog", "apple","elephant","banana","cat","dog");
我需要排序为
$array= array("Apple", "apple", "Banana", "banana", "Cat", "cat", "Dog", "dog",...);
任何人都可以帮助我进入PHP？