[英]JSON object sort in Javascript
I have a JSON object jobj=JSON.parse(jsnstr) array returned by JSON.parse and I wish to sort it by its name. 我有一个由JSON.parse返回的JSON对象jobj = JSON.parse(jsnstr)数组,我希望按其名称对其进行排序。 I have used
我用过
jobj=$(jobj).sort(sortfunction);
function sortfunction(a,b){
return a.name.toLowerCase() > b.name.toLowerCase() ? 1 : -1;
};
But this didnt work out instead i am getting undefined obj any help? 但这没有解决,反而我得到未定义的obj任何帮助吗?
You can't sort a hash; 您无法对哈希进行排序; it must be an array.
它必须是一个数组。 What you can do is setup the reference of each a.name value to an array and then sort that array with a custom function like you have up there.
您可以做的是设置每个a.name值对数组的引用,然后使用自定义函数对该数组进行排序,就像您在那里一样。
json = JSON.parse(...);
var refs = [];
for(var i in json) {
var name = i.name;
refs.push({
name : name.toLowerCase(),
object : i
});
}
var sorted = refs.sort(function(a,b) {
return a.name > b.name;
});
Now everything in your refs array is sorted and you can access each object individually by sorted[index].object. 现在,您的refs数组中的所有内容都已排序,您可以通过sorted [index] .object单独访问每个对象。
I think you meant to write this: 我想你打算写这个:
jobj=$(jobj).sort(function(a,b){
return a.name.toLowerCase() > b.name.toLowerCase() ? 1 : -1;
});
You don't need jQuery for this. 您不需要jQuery。 Also,
sort
modifies the original array. 同样,
sort
修改原始数组。 So, if jobj
is an array, you can just do: 因此,如果
jobj
是一个数组,则可以执行以下操作:
jobj.sort(sortfunction);
You may also want to account for the case where a.name
and b.name
are the same: 您可能还需要考虑
a.name
和b.name
相同的情况:
function sortfunction(a,b){
var aSort = a.name.toLowerCase(),
bSort = b.name.toLowerCase();
if(aSort === bSort) return 0;
return aSort > bSort ? 1 : -1;
}
DEMO: http://jsfiddle.net/xmmPL/ 演示: http : //jsfiddle.net/xmmPL/
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