Question

150

How to select json item from the array

rated 0 times [ 152] [ 2] / answers: 1 / hits: 88440 / 13 Years ago, tue, may 24, 2011, 12:00:00

From the below JSON, how can I retrieve title from the note and notes using a for loop and ajax to retrieve?

{

"infos": {

        "info": [

        {

            "startYear": "1900",

            "endYear": "1930",

            "timeZoneDesc": "daweerrewereopreproewropewredfkfdufssfsfsfsfrerewrBlahhhhh..",

            "timeZoneID": "1",

                            "note": {

                "notes": [

                    {

                        "id": "1",

                        "title": "Mmm"

                    },

                    {

                        "id": "2",

                        "title": "Wmm"

                    },

                    {

                        "id": "3",

                        "title": "Smm"

                    }

                ]

            },

            "links": [

                { "id": "1", "title": "Red House", "url": "http://infopedia.nl.sg/articles/SIP_611_2004-12-24.html" },

                { "id": "2", "title": "Joo Chiat", "url": "http://www.the-inncrowd.com/joochiat.htm" },

                { "id": "3", "title": "Bake", "url": "https://thelongnwindingroad.wordpress.com/tag/red-house-bakery" }

            ]

        }

I tried out the code below but it doesn't work - it either says:

is null

not an object

length is null

r not an object

var detail = eval(xmlhttprequest.responseText)

var rss = detail.infos.info

for(var i = 0; i<rss.length; i++)

   startyear += rss[i].startyear

Answers

Only authorized users can answer the question. Please sign in first, or register a free account.

hailie

Add To Favorites

Follow

Total Points: 25

Total Questions: 112

Total Answers: 111

Location: Belize

Member since Tue, Dec 8, 2020

4 Years ago

answered 13 Years ago keric · Accepted Answer

Use

for (i = 0; i < 3; i++) {

    alert(JSON.infos.info[0].note.notes[i].title);

}

TRY IT HERE: JSFIDDLE WORKING EXAMPLE

BTW your JSON is not valid. Use this JSON:

var JSON = {

    infos: {

        info: [

            {

                startYear: 1900,

                endYear: 1930,

                timeZoneDesc: daweerrewereopreproewropewredfkfdufssfsfsfsfrerewrBlahhhhh..,

                timeZoneID: 1,

                note: {

                    notes: [

                        {

                            id: 1,

                            title: Mmm

                        },

                        {

                            id: 2,

                            title: Wmm

                        },

                        {

                            id: 3,

                            title: Smm

                        }

                    ]

                },

                links: [

                    {

                        id: 1,

                        title: Red House,

                        url: http://infopedia.nl.sg/articles/SIP_611_2004-12-24.html

                    },

                    {

                        id: 2,

                        title: Joo Chiat,

                        url: http://www.the-inncrowd.com/joochiat.htm

                    },

                    {

                        id: 3,

                        title: Bake,

                        url: https://thelongnwindingroad.wordpress.com/tag/red-house-bakery

                    }

                ]

            }

        ]

    }

}

EDIT:

Here is what you want:

var infoLength= JSON.infos.info.length;



for (infoIndex = 0; infoIndex < infoLength; infoIndex++) {



    var notesLength= JSON.infos.info[infoIndex].note.notes.length;



    for (noteIndex = 0; noteIndex < notesLength; noteIndex++) {



        alert(JSON.infos.info[infoIndex].note.notes[noteIndex].title);



    }

}