javascript - Problem with native js ajax getting data and converting it into json object

Question

Use ajax written natively in js to obtain a data list, and the order is normal

xmlHttp.responseText The order here is normal

But when I convert the json string into a json object, the order is not the original order

var json = eval('(' + xmlHttp.responseText + ')');

Is there any way to maintain the original output order after conversion?

Answer 1

I don’t quite understand, what do you mean? Has the data order changed? ?
Actually, there are several ways toJson, you can try them all.

// 1
function toJson(json){
    return json ? (new Function("return "+ json))() : {}
}
toJson(xmlHttp.responseText)

// 2
JSON.parse(xmlHttp.responseText)

// 3 就是你那种