[英]looping through json in javascript
"obj" : {
"a" : [
{ "name" : "value" },
{ "name" : "value" },
{ "name" : "value }
],
"b" : [
{ "name" : "value" },
{ "name" : "value" },
{ "name" : "value" }
]
};
I have my json structured similarly to this in that "a" and "b" are objects that contain arrays which also contain objects. 我的json的结构与此类似,因为“ a”和“ b”是包含数组的对象,这些数组也包含对象。 I'm not very good with iteration/loops.
我对迭代/循环不是很好。 I mainly would like to get the value of "name".
我主要想获得“名称”的值。 any help?
有什么帮助吗? THANKS IN ADVANCE!
提前致谢!
var foo = JSON.parse(json);
for(var i in foo){
for(var y = 0; y < foo[i].length; y++)
alert(foo[i][y].name);
}
https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/JSON/parse https://developer.mozilla.org/zh-CN/JavaScript/Reference/Global_Objects/JSON/parse
You can use forEach
: 您可以使用
forEach
:
Object.keys( json.obj ).forEach(function ( key ) {
json.obj[ key ].forEach(function ( obj ) {
// retrieve obj.name here
});
});
Live demo: http://jsfiddle.net/4Mrkp/ 现场演示: http : //jsfiddle.net/4Mrkp/
Using underscore.js -> 使用underscore.js->
var obj = {
"a" : [
{ "name" : "value" },
{ "name" : "value" },
{ "name" : "value" }
],
"b" : [
{ "name" : "value" },
{ "name" : "value" },
{ "name" : "value" }
]
};
var names = _.chain(obj).values().flatten().pluck('name').value();
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