{ "name": "bob", "dinner": "pizza" },
{ "name": "john", "dinner": "sushi" },
{ "name": "larry", "dinner": "hummus" }
]
people.filter(function (person) {
if(person.dinner){
console.log(person.dinner)
}
if(person.name){
console.log(person.name)
}
})
var people1 = { "name": "bob", "dinner": "pizza" }
Object.keys(people1)
console.log(Object.keys(people1))
var jsonObj = {"1" : 50,"2" : 40,"3" : 40,"4" : 30,"5" : 20,"6" : 20,"7" : 20,"8" : 20,"9" : 20, "10" : 20}
var keyAry = []
var valueAry = []
for(var key in jsonObj){
keyAry.push(key)
valueAry.push(jsonObj[key])
}
console.log(keyAry)
console.log(valueAry)
php数组根据某一个键值，把相同键值的合并生成一个新的二维数组源数据：
$infos = array( array( 'a' =>36, 'b' =>'xa', 'c' =>'2015-08-28 00:00:00', 'd' =>'2015/08/438488a00b3219929282e3652061c2e3.png'
), array( 'a' =>3, 'b' =>'vd', 'c' =>'2015-08-20 00:00:00', 'd' =>'2015/08/438488a00b3219929282e3652061c2e3.png'
), array( 'a' =>6, 'b' =>'wwe', 'c' =>'2015-08-28 00:00:00', 'd' =>'2015/08/438488a00b3219929282e3652061c2e3.png'
), array( 'a' =>36, 'b' =>'se', 'c' =>'2015-08-28 00:00:00', 'd' =>'2015/08/438488a00b3219929282e3652061c2e3.png'
), array( 'a' =>6, 'b' =>'aw', 'c' =>'2015-08-28 00:00:00', 'd' =>'2015/08/438488a00b3219929282e3652061c2e3.png'
), array( 'a' =>36, 'b' =>'bv', 'c' =>'2015-08-28 00:00:00', 'd' =>'2015/08/438488a00b3219929282e3652061c2e3.png'
), array( 'a' =>12, 'b' =>'xx', 'c' =>'2015-08-27 00:00:00', 'd' =>'2015/08/438488a00b3219929282e3652061c2e3.png'
)
)1234567891011121314151617181920212223242526272829303132333435363738394041424344
处理要求：将数组中a相同的二维数组合并到一个数组中，生成一个新的数组
代码：
<?php
$result= array()foreach ($infos as $key =>$info) { $result[$info['a']][] = $info
}
print_r($result)123456
输出：
Array(
[36] =>Array
(
[0] =>Array
(
[a] =>36
[b] =>xa
[c] =>2015-08-28 00:00:00
[d] =>2015/08/438488a00b3219929282e3652061c2e3.png
)
[1] =>Array
(
[a] =>36
[b] =>se
[c] =>2015-08-28 00:00:00
[d] =>2015/08/438488a00b3219929282e3652061c2e3.png
)
[2] =>Array
(
[a] =>36
[b] =>bv
[c] =>2015-08-28 00:00:00
[d] =>2015/08/438488a00b3219929282e3652061c2e3.png
)
)
[3] =>Array
(
[0] =>Array
(
[a] =>3
[b] =>vd
[c] =>2015-08-20 00:00:00
[d] =>2015/08/438488a00b3219929282e3652061c2e3.png
)
)
[6] =>Array
(
[0] =>Array
(
[a] =>6
[b] =>wwe
[c] =>2015-08-28 00:00:00
[d] =>2015/08/438488a00b3219929282e3652061c2e3.png
)
[1] =>Array
(
[a] =>6
[b] =>aw
[c] =>2015-08-28 00:00:00
[d] =>2015/08/438488a00b3219929282e3652061c2e3.png
)
)
[12] =>Array
(
[0] =>Array
(
[a] =>12
[b] =>xx
[c] =>2015-08-27 00:00:00
[d] =>2015/08/438488a00b3219929282e3652061c2e3.png
)
)
)
