Javascript (AngularJS) 如何遍历数组
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(AngularJS) how to loop through an Array
提问by lipdjo
That is an array on php.i have transformed it in json (with json_encode)
那是 php.i 上的一个数组，已将其转换为 json（使用 json_encode）
Array
(
[codehttp] => Array
(
[0] => 200
[1] => 200
[2] => 200
[3] => 200
)
[time] => Array
(
[0] => 2014-09-15 13:54:04
[1] => 2014-09-15 13:54:04
[2] => 2014-09-15 13:54:04
[3] => 2014-09-15 13:54:04
)
[channel] => Array
(
[0] => channel1
[1] => channel1
[2] => channel1
[3] => channel1
[4] => channel1
)
[type] => Array
(
[0] => android
[1] => android
[2] => android
[3] => android
[4] => android
)
[indice] => Array
(
[0] => masterplaylist
[1] => video_110000
[2] => video_190000
[3] => video_300000
[4] => video_500000
)
[cdn] => Array
(
[0] => cdn1
[1] => cdn1
[2] => cdn1
[3] => cdn1
[4] => cdn1
)
)
Please I would like to know how to parse (the codehttp field) in javascript the final json variable. I would like to do it into an angularjs controller.
请我想知道如何在 javascript 中解析（codehttp 字段）最终的 json 变量。我想将其放入 angularjs 控制器中。
I have tried this code (in a controller) but it does'nt work
我试过这个代码（在控制器中）但它不起作用
$scope.flag_a = 'good';
for(var key in $scope.content.codehttp)
{
if($scope.content.codehttp[key] != '200')
{
$scope.flag_a = 'bad';
}
}
回答by Nitsan Baleli
At first you need to make sure, your response actually is treated as JSON (thus results in a proper javascript object), and then you can use on of the following three ways:
首先，您需要确保您的响应实际上被视为 JSON（从而产生正确的 javascript 对象），然后您可以使用以下三种方式之一：
Using angularjs's own method angular.forEach
使用 angularjs 自己的方法angular.forEach
$scope.content = {};
$scope.content.codehttp = [200, 200, 200, 201];
angular.forEach($scope.content.codehttp, function(value, key) {
if (value != 200) {
$scope.flag_a = 'bad';
}
})
Using a plain 'for'loop:
使用简单的“for”循环：
for(i=0;i<$scope.content.codehttp.length;i++) {
if ($scope.content.codehttp[i] != 200) {
$scope.flag_a = 'bad';
}
}
Using the (relatively new) native Array.prototype.forEachmethod:
使用（相对较新的）原生 Array.prototype.forEach方法：
$scope = {};
$scope.content = {};
$scope.content.codehttp = [200, 200, 200, 201];
$scope.content.codehttp.forEach(function(value, key) {
if (value != 200) {
// for demonstrational purposes only:
document.write("Entry #"+(key+1)+" contained a bad status: "+value);
$scope.flag_a = 'bad';
}
})