[英]How can I loop through a JSON array based on a variable?
我已經遍歷了我的第一個JSON字符串,它為我提供了一個顯示在div中的變量值(“ lstr”)。 基於此第一個值,我想遍歷第二個JSON字符串以填充一個下拉框。 變量值“ lstr”與jsonString2中的“ name”對象匹配:
//resultItems.push("After");
var lstr = "";
for (var j = 2; j < resultItems.length; j++) {
lstr = lstr + resultItems[j] + "";
}
dom.byId("info").innerHTML = lstr;
});
jsonString2:
var jsonString2 =
{
"Toplevel": {
"name": "Blue",
"service": {
"1": "a url",
"2": "a url",
"3": "a url",
},
"name": "Green",
"service": {
"1": "a url",
"2": "a url",
"3": "a url",
},
"name": "Yellow",
"service": {
"1": "a url",
"2": "a url",
"3": "a url",
}
}
}
取決於“ lstr”值是藍色,綠色還是黃色,然后將用1,2,3對象及其相關的url值填充下拉框。 我希望這是有道理的? 任何幫助都會好嗎?
就像評論中所說的那樣,您需要重構第二個JSON對象(jsonString2)如下所示:
var jsonString2 =
{
"Toplevel": {
"Blue": {
"service": {
"1": "a url",
"2": "a url",
"3": "a url",
}
},
"Green" : {
"service": {
"1": "a url",
"2": "a url",
"3": "a url",
}
},
"Yellow" : {
"service": {
"1": "a url",
"2": "a url",
"3": "a url",
}
}
}
}
那你可以用
for (var key in jsonStrng2[lstr].service){
//add code to update dropdown here for each service
}
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