我是javascript的新手，想在底部找到给定键值的索引但不能这样做。我哪里错了？数组中的数据从json文件复制，该文件在jsonlint上检查有效。
var productArray=[
{
"name1":"Electronics",
"id1":{
"products1":{
"id":1.1,
"name":"Microsoft Keyboard",
"description":"good keyboard",
"rating":3,
"price":500,
"freeDeliv":true,
"seller":"MS",
"quanAvl":10
},
"products2":{
"id":1.2,
"name":"ASUS phone",
"description":"good phone",
"rating":4,
"price":10000,
"freeDeliv":true,
"seller":"ASUS",
"quanAvl":10
},
"products3":{
"id":1.3,
"name":"iPhone",
"description":"good phone",
"rating":3,
"price":50000,
"freeDeliv":false,
"seller":"Apple",
"quanAvl":100
}
},
"name2":"Clothing",
"id2":{
"products4":{
"id":2.1,
"name":"Jeans",
"description":"good Jeans",
"rating":3,
"price":800,
"freeDeliv":true,
"seller":"Levis",
"quanAvl":100
},
"products5":{
"id":2.2,
"name":"TShirt",
"description":"good TShirt",
"rating":4,
"price":1000,
"freeDeliv":true,
"seller":"Peter",
"quanAvl":1000
},
"products6":{
"id":2.3,
"name":"Sherwani",
"description":"very good",
"rating":4,
"price":50000,
"freeDeliv":false,
"seller":"Maanyavar",
"quanAvl":1000
}
}},
];
var display=function(productArray,prodKey,value){
for(x in productArray)
{
if(productArray[x][prodKey]==value)
{
console.log(x);
}
else{
alert("Not Found");
}
}
}
display(productArray,"name","Sherwani");
答案 0 :(得分：2)
这就是答案。我试过这个
var display=function(productArray_,prodKey,value){
p = productArray_[0]["id2"];
found = false;
for (var key in p) {
if (p.hasOwnProperty(key)) {
p2 = p[key];
for(var key2 in p2){
if(p2.hasOwnProperty(key2)){
if(key2 == prodKey && p2[key2] == value){
console.log(key2); //index of value you looking for
console.log(p2[key2]) //value from index you looking for
alert(key2);
found = true;
}
}
}
}
}
if(!found)
alert("not found");
}
display(productArray,"name","Sherwani");
但我同意，这是一个非常糟糕的对象结构。你应该改变json结构，这样你就可以更容易地解析它
更新：你应该尽可能避免创建json对象（以＆＃34; {＆＃34;以＃34;}结束;＆＃34;），然后创建json数组（以＆＃34开头） ; [＆＃34;以＆＃34;]＆＃34;结束。
这是一个更好的结构以及如何解析它
var productArray=[
{
"name": "Electronics",
"list": [
{
"code": "products1",
"id": 1.1,
"name": "Microsoft Keyboard",
"description": "good keyboard",
"rating": 3,
"price": 500,
"freeDeliv": true,
"seller": "MS",
"quanAvl": 10
},
{
"code": "products2",
"id": 1.2,
"name": "ASUS phone",
"description": "good phone",
"rating": 4,
"price": 10000,
"freeDeliv": true,
"seller": "ASUS",
"quanAvl": 10
},
{
"code": "products3",
"id": 1.3,
"name": "iPhone",
"description": "good phone",
"rating": 3,
"price": 50000,
"freeDeliv": false,
"seller": "Apple",
"quanAvl": 100
}
]
},
{
"name": "Clothing",
"list": [
{
"code": "products4",
"id": 2.1,
"name": "Jeans",
"description": "good Jeans",
"rating": 3,
"price": 800,
"freeDeliv": true,
"seller": "Levis",
"quanAvl": 100
},
{
"code": "products5",
"id": 2.2,
"name": "TShirt",
"description": "good TShirt",
"rating": 4,
"price": 1000,
"freeDeliv": true,
"seller": "Peter",
"quanAvl": 1000
},
{
"code": "products6",
"id": 2.3,
"name": "Sherwani",
"description": "very good",
"rating": 4,
"price": 50000,
"freeDeliv": false,
"seller": "Maanyavar",
"quanAvl": 1000
}
]
},
]
var display=function(productArray_,prodKey,value){
found = false;
for(var key in productArray_){
for(var key2 in productArray_[key]){
if(key2 == "list"){
for(var key3 in productArray_[key][key2]){
for(var key4 in productArray_[key][key2][key3]){
if(key4 == prodKey
&& productArray_[key][key2][key3][key4] == value
){
console.log(key4);
console.log(productArray_[key][key2][key3][key4]);
alert(key4);
found = true;
}
}
}
}
}
}
if(!found)
alert("not found");
}
display(productArray,"name","Sherwani");
答案 1 :(得分：0)
您在示例中寻找的名称更深一层。这应该有效：
var display = function(productArray, prodKey, value){
for (x in productArray) {
for (prod in productArray[x]) {
if (productArray[x][prod][prodKey] == value) {
console.log(x);
} else {
alert("Not Found");
}
}
}
}