Develop Reference

access object in parsed nested JSON in Google Apps Script

I am trying to access the student tags array which has an object inside of it (student_tags:tag:"do not contact") Can someone please help me with the syntax on getting this data? I am pretty sure my syntax in retrieving this array is incorrect.
JSON Data being fetched:
{
"id":"e90c4c93-207c-49f7-89c4-eb85b3315dd5",
"created_by_user_id":"8560ed12-2858-4237-bea2-3dcab82637d3",
"date_created":"2019-08-06T22:54:59.583257+00:00",
"person_number":5973,
"first_name":"Test",
"middle_name":"James",
"last_name":"Cook",
"birth_name":null,
"email":"test#gmail.com",
"alt_email":null,
"facebook_url":null,
"linkedin_url":"https://www.linkedin.com/in/test-burns-273a5165/",
"gender":"Male",
"phone_numbers":[
{
"phone_type":"Mobile",
"number":"449288809"
},
{
"phone_type":"Home",
"number":"93938289"
}
],
"is_no_contact":false,
"is_client":false,
"student_detail":{
"onboarding_student_setting_id":"e189187a-cc91-43c6-ac44-635328b1e95a",
"student_onboarding_setting":{
"id":"e189187a-cc91-43c6-ac44-635328b1e95a",
"created_by_user_id":"562a63a2-e24e-4ff7-8358-dfb74ed6c70a",
"title":"High School On-boarding Process",
"description":"High School On-boarding Process",
"is_default":false,
"onboarding_steps":[
{
"step_id":"9cd30560-1c3c-4382-b8a2-505e78b9ce4d",
"set_tags":[
"Student Tag"
],
"set_to_status":"Potential",
"title":"Contact",
"short_title":"Contact",
"is_attachment_required":null
},
{
"step_id":"e6f90546-a516-416c-a880-9adc10358f1d",
"set_tags":[
],
"set_to_status":"Pipeline",
"title":"Program Orientation",
"short_title":"PO",
"is_attachment_required":null
},
{
"step_id":"8660df59-ddd8-4182-b6ca-c44e3de70969",
"set_tags":[
],
"set_to_status":"Confirmed",
"title":"Parental Consent",
"short_title":"Parental Consent",
"is_attachment_required":true
}
],
"is_disabled":false
},
"student_onboarding_history":[
],
"onboarding_steps_complete":null,
"onboarding_percent":null,
"graduating_student_setting_id":null,
"student_graduating_setting":null,
"student_graduating_history":[
],
"graduating_steps_complete":null,
"graduating_percent":null,
"is_active":true,
"date_deactivated":"2019-08-09T03:36:57.977584",
"deactivated_person_id":"562a63a2-e24e-4ff7-8358-dfb74ed6c70a",
"deactviated_notes":null,
"student_status":"Pipeline",
"language_group":null,
"heritage":null,
"date_ics_set":"2019-08-08T04:28:48.832170",
"ics_by_person_id":"562a63a2-e24e-4ff7-8358-dfb74ed6c70a",
"ics_status":"Active",
"ics_id":null,
"ics_start":null,
"ics_end":null,
"ics_notes":null,
"student_tags":[
{
"tag":"Do not contact",
"date_added":"2019-08-13 06:06:13.012817"
}
],
"student_source":"Other",
"date_of_birth":"2019-08-07",
"semester_number_start":null,
"semester_year_start":null,
"semester_number_end":null,
"semester_year_end":null,
"location_address":{
"line_1":"34 Adelaide Avenue",
"line_2":"",
"suburb":"east lindfield",
"postcode":"2322",
"state":"",
"country_code":"AU",
"location_description":"east lindfield, ",
"formatted_location":null,
"latitude":"-33.7691871",
"longitude":"151.1863407"
},
"emergency_first_name":"Someone",
"emergency_last_name":"",
"emergency_phone_numbers":[
],
"emergency_address":{
"line_1":"hi",
"line_2":"",
"suburb":"willoughby",
"postcode":"4154",
"state":"NSW",
"country_code":"AU",
"location_description":"willoughby, NSW",
"formatted_location":null,
"latitude":"-33.804179",
"longitude":"151.2042376"
},
"emergency_relationship":"Auntie",
"university":null,
"campus":null,
"degree_pool_id":[
],
"degree":null,
"degree_major":null,
"high_school":"School",
"high_school_complete":null,
"is_travel_required":null,
"date_alumni_set":null,
"alumni_set_by_person_id":null,
"alumni_company":null,
"alumni_job_title":null,
"alumni_city":null,
"alumni_state":null,
"alumni_country_code":null,
"alumni_notes":null,
"is_at_risk":null,
"date_at_risk_set":null,
"at_risk_by_person_id":null,
"at_risk_context":null,
"at_risk_reasons":null,
"at_risk_semester":null,
"at_risk_year":null,
"at_risk_notes":null,
"quick_notes":null,
"cv_url":null,
"public_summary":null,
"public_profile":null,
"is_graduating":null,
"graduating_by_person_id":null,
"graduating_semester":null,
"graduating_year":null,
"graduating_notes":null,
"advisor_users":[
{
"date_created":"2019-08-06T22:54:59.582970+00:00",
"is_primary":true,
"advisor_person_id":"8560ed12-2858-4237-bea2-3dcab82637d3"
}
]
},
"contact_detail":{
"company_id":null,
"contact_tags":null,
"location_address":{
"line_1":null,
"line_2":null,
"suburb":null,
"postcode":null,
"state":null,
"country_code":null,
"location_description":null,
"formatted_location":null,
"latitude":null,
"longitude":null
},
"job_title":null,
"quick_notes":null,
"is_primary":null,
"is_billing":null,
"is_student_contact":null,
"advisor_users":null
},
"current_placements":null,
"previous_placements":null
}
The function returning the JSON response:
var url = "http://api.com/v1/";
var response = UrlFetchApp.fetch(url, options);
var message = response.getContentText();
var code = response.getResponseCode();
Logger.log(message)
var tags = message["student_tags"][0]
Logger.log(tags)

In response to 'would you know how to use the key/value loop to access the same student tag value ("Do not contact")?', I'm not sure I understand the question, but the below code may be a good place to start. Let me know if I'm way off track...
var tags = message.student_detail.student_tags,
i = 0,
len = tags.length;
for (i; i < len; i++) {
var obj = tags[i];
for (a in obj) {
console.log(a, obj[a])
}
}

Angular js solve a different format of a json array of objects

Based on the result below , how can an angular for each loop be able to solve that json array of objects format ? The value is title and the id is key. Any Idea? Thank you.
mycode
me.record.questionaires = []
angular.forEach(detail.questionaires, function (value, key) {
me.record.questionaires.push({ "id": key, "title": value })
});
Formated json data (detail.questionaire result)
[
"{'sub_title': 'dsadsa', 'instruction': 'You Must',…elimit': '01:05:19', 'title': 'asdsa', 'id': 133}",
"{'sub_title': 'sdasdsa', 'instruction': None, 'cre…melimit': '05:30:09', 'title': 'asda', 'id': 131}"
]

You need to
Loop over the array
Parse the string as JSON
Push or map the appropriate values into your questionaires array (it's not clear what data you want)
me.record.questionaires = detail.questionaires.map(json => {
let { id, title } = JSON.parse(json)
return { id, title }
})

I had to change your sample formatted JSON a bit because it was giving me console errors. Please see if this helps.
angular
.module("myModule", [])
.controller("myController", function($scope) {
var me ={record: {questionaires: []}};
$scope.me = me;
var detail ={};
detail.questionaires = [
"{'sub_title': 'dsadsa', 'instruction': 'You Must','…elimit': '01:05:19', 'title': 'asdsa', id: 133}",
'{"sub_title": "sdasdsa", "instruction": "None", "cre…melimit": "05:30:09", "title": "asda", "id": 131}'
];
angular.forEach(detail.questionaires, function (value, key) {
var questionaire = JSON.parse(value.replace(/'/g, '"').replace(/id:/g, '"id":'));
me.record.questionaires.push({ "id": questionaire.id, "title": questionaire.title });
});
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.7.5/angular.min.js"></script>
<div ng-app="myModule">
<div ng-controller="myController">
<div><strong>me.record.questionaires:</strong></div>
<div ng-repeat="q in me.record.questionaires">
<div>{{q}}</div>
</div>
</div>
</div>

How To Loop and Load Section of JSON to New Array

I am getting some dynamic data from Ajax call in JSON format on
var out;
request.done(function( data ) {
out = data;
console.log(out);
});
which looks like
{
"seq":"1",
"node":"1407",
"edge":"1721",
"cost":"0.00155228618815934",
"st_astext":"MULTILINESTRING((-124.339494 49.3269419000001,-124.3387254 49.3269805,-124.338669 49.3270201,-124.3386158 49.3270832000001,-124.3386343 49.3274121000001,-124.3386975 49.3274896,-124.3390742 49.3276439000001,-124.3394701 49.3277238000001,-124.339726 49.3277574000001,-124.3398638 49.3277496000001,-124.3399475 49.3277140000001,-124.3400263 49.3276270000001,-124.3402516 49.3272857000001,-124.340277 49.3271520000001,-124.3402715 49.3270367000001,-124.3402042 49.3269591000001,-124.3401021 49.3269305000001,-124.339494 49.3269419000001))"
}{
"seq":"2",
"node":"2459",
"edge":"43870",
"cost":"0.0014795249102581",
"st_astext":"MULTILINESTRING((-123.4051866 48.4191865000001,-123.4053714 48.4191387000001,-123.405405 48.4190178000001,-123.4050125 48.4186474000001,-123.4047663 48.4185377000001,-123.4045437 48.4185367000001,-123.4044758 48.4185937,-123.4043546 48.4189586000001,-123.404408 48.4190429000001,-123.4051866 48.4191865000001))"
}{
"seq":"3",
"node":"14962",
"edge":"15633",
"cost":"0.00144452021471863",
"st_astext":"MULTILINESTRING((-124.2005178 48.8657682,-124.2008549 48.8656748000001,-124.2011903 48.8656273,-124.2020436 48.8656722000001,-124.2029403 48.8658963,-124.2033335 48.8659029,-124.2034588 48.8658654000001,-124.2034906 48.8658182,-124.2034447 48.8657724,-124.203297 48.8657185000001,-124.203148 48.8656980000001,-124.2027598 48.865705,-124.20221 48.8655579000001,-124.2017332 48.8654932000001,-124.200973 48.8654362,-124.2006816 48.8654025000001,-124.200004 48.8651794,-124.1997069 48.8650816000001,-124.1995273 48.8650453000001,-124.1992556 48.8650290000001,-124.1988955 48.8649418000001,-124.1987556 48.8649332000001,-124.1986996 48.8649719000001,-124.1986801 48.8650336000001,-124.1986764 48.8650454,-124.1987314 48.8651373000001,-124.1988681 48.8651927000001,-124.1992515 48.8652406000001,-124.1995975 48.8653437,-124.2000068 48.8655325,-124.2005013 48.8657606,-124.2005178 48.8657682))"
}{
"seq":"4",
"node":"13891",
"edge":"13862",
"cost":"0.00076542396749831",
"st_astext":"MULTILINESTRING((-124.4606302 49.3438327000001,-124.4605727 49.3436995000001,-124.4604416 49.3435897000001,-124.4602789 49.3435198000001,-124.4601008 49.3434993000001,-124.4599664 49.3435289000001,-124.4598809 49.3436195,-124.4598941 49.3441714000001,-124.4599637 49.3442309000001,-124.4600623 49.3442440000001,-124.4601711 49.3441961,-124.4606302 49.3438327000001))"
}{
"seq":"5",
"node":"3684",
"edge":"28825",
"cost":"0.00117904724673861",
"st_astext":"MULTILINESTRING((-123.3495787 48.4045938,-123.3496211 48.4041484000001,-123.3493846 48.4033146,-123.3492248 48.4032068000001,-123.3490655 48.4031857000001,-123.3489141 48.4032153000001,-123.3486746 48.4033022,-123.3486286 48.4034498,-123.3494207 48.4043084,-123.3495787 48.4045938))"
}{
"seq":"6",
"node":"12168",
"edge":"11270",
"cost":"0.00109953281896407",
"st_astext":"MULTILINESTRING((-123.4652201 48.4475155000001,-123.4648358 48.4482124,-123.4650847 48.4482788,-123.4654424 48.4475732000001,-123.4652201 48.4475155000001))"
}
now I need to load the "st_astext":"MULTILINESTRING of each seq to arrays of arry like
var paths = [
[
[-124.339494,49.3269419000001],
[-124.3387254,49.3269805],
[-124.338669,49.3270201],
...
],
[
[-123.4051866, 48.4191865000001],
[-123.4053714, 48.4191387000001],
[-123.405405, 48.4190178000001],
....
]
];

To accomplish this, you can strip out the "MULTILINE..." portion of your string, and then split that string on a comma to get each set of coordinates. From there, you can split on the space separating the coordinates, and coerce to a Number. Like so:
var data = [{
"seq":"1",
"node":"1407",
"edge":"1721",
"cost":"0.00155228618815934",
"st_astext":"MULTILINESTRING((-124.339494 49.3269419000001,-124.3387254 49.3269805,-124.338669 49.3270201,-124.3386158 49.3270832000001,-124.3386343 49.3274121000001,-124.3386975 49.3274896,-124.3390742 49.3276439000001,-124.3394701 49.3277238000001,-124.339726 49.3277574000001,-124.3398638 49.3277496000001,-124.3399475 49.3277140000001,-124.3400263 49.3276270000001,-124.3402516 49.3272857000001,-124.340277 49.3271520000001,-124.3402715 49.3270367000001,-124.3402042 49.3269591000001,-124.3401021 49.3269305000001,-124.339494 49.3269419000001))"
},{
"seq":"2",
"node":"2459",
"edge":"43870",
"cost":"0.0014795249102581",
"st_astext":"MULTILINESTRING((-123.4051866 48.4191865000001,-123.4053714 48.4191387000001,-123.405405 48.4190178000001,-123.4050125 48.4186474000001,-123.4047663 48.4185377000001,-123.4045437 48.4185367000001,-123.4044758 48.4185937,-123.4043546 48.4189586000001,-123.404408 48.4190429000001,-123.4051866 48.4191865000001))"
},{
"seq":"3",
"node":"14962",
"edge":"15633",
"cost":"0.00144452021471863",
"st_astext":"MULTILINESTRING((-124.2005178 48.8657682,-124.2008549 48.8656748000001,-124.2011903 48.8656273,-124.2020436 48.8656722000001,-124.2029403 48.8658963,-124.2033335 48.8659029,-124.2034588 48.8658654000001,-124.2034906 48.8658182,-124.2034447 48.8657724,-124.203297 48.8657185000001,-124.203148 48.8656980000001,-124.2027598 48.865705,-124.20221 48.8655579000001,-124.2017332 48.8654932000001,-124.200973 48.8654362,-124.2006816 48.8654025000001,-124.200004 48.8651794,-124.1997069 48.8650816000001,-124.1995273 48.8650453000001,-124.1992556 48.8650290000001,-124.1988955 48.8649418000001,-124.1987556 48.8649332000001,-124.1986996 48.8649719000001,-124.1986801 48.8650336000001,-124.1986764 48.8650454,-124.1987314 48.8651373000001,-124.1988681 48.8651927000001,-124.1992515 48.8652406000001,-124.1995975 48.8653437,-124.2000068 48.8655325,-124.2005013 48.8657606,-124.2005178 48.8657682))"
},{
"seq":"4",
"node":"13891",
"edge":"13862",
"cost":"0.00076542396749831",
"st_astext":"MULTILINESTRING((-124.4606302 49.3438327000001,-124.4605727 49.3436995000001,-124.4604416 49.3435897000001,-124.4602789 49.3435198000001,-124.4601008 49.3434993000001,-124.4599664 49.3435289000001,-124.4598809 49.3436195,-124.4598941 49.3441714000001,-124.4599637 49.3442309000001,-124.4600623 49.3442440000001,-124.4601711 49.3441961,-124.4606302 49.3438327000001))"
},{
"seq":"5",
"node":"3684",
"edge":"28825",
"cost":"0.00117904724673861",
"st_astext":"MULTILINESTRING((-123.3495787 48.4045938,-123.3496211 48.4041484000001,-123.3493846 48.4033146,-123.3492248 48.4032068000001,-123.3490655 48.4031857000001,-123.3489141 48.4032153000001,-123.3486746 48.4033022,-123.3486286 48.4034498,-123.3494207 48.4043084,-123.3495787 48.4045938))"
},{
"seq":"6",
"node":"12168",
"edge":"11270",
"cost":"0.00109953281896407",
"st_astext":"MULTILINESTRING((-123.4652201 48.4475155000001,-123.4648358 48.4482124,-123.4650847 48.4482788,-123.4654424 48.4475732000001,-123.4652201 48.4475155000001))"
}];
var paths = data.map(elem => {
var coordsBegin = elem.st_astext.split("((")[1];
var coords = coordsBegin.split("))")[0];
return coords.split(",").map(coord => coord.split(" ").map(Number));
});
console.log(paths);

Assuming the initial data structure is an array of objects, you can loop through it and generate the desired output with Array.prototype.map
const data = [{
"seq":"1",
"node":"1407",
"edge":"1721",
"cost":"0.00155228618815934",
"st_astext":"MULTILINESTRING((-124.339494 49.3269419000001,-124.3387254 49.3269805,-124.338669 49.3270201,-124.3386158 49.3270832000001,-124.3386343 49.3274121000001,-124.3386975 49.3274896,-124.3390742 49.3276439000001,-124.3394701 49.3277238000001,-124.339726 49.3277574000001,-124.3398638 49.3277496000001,-124.3399475 49.3277140000001,-124.3400263 49.3276270000001,-124.3402516 49.3272857000001,-124.340277 49.3271520000001,-124.3402715 49.3270367000001,-124.3402042 49.3269591000001,-124.3401021 49.3269305000001,-124.339494 49.3269419000001))"
}, {
"seq":"2",
"node":"2459",
"edge":"43870",
"cost":"0.0014795249102581",
"st_astext":"MULTILINESTRING((-123.4051866 48.4191865000001,-123.4053714 48.4191387000001,-123.405405 48.4190178000001,-123.4050125 48.4186474000001,-123.4047663 48.4185377000001,-123.4045437 48.4185367000001,-123.4044758 48.4185937,-123.4043546 48.4189586000001,-123.404408 48.4190429000001,-123.4051866 48.4191865000001))"
}, {
"seq":"3",
"node":"14962",
"edge":"15633",
"cost":"0.00144452021471863",
"st_astext":"MULTILINESTRING((-124.2005178 48.8657682,-124.2008549 48.8656748000001,-124.2011903 48.8656273,-124.2020436 48.8656722000001,-124.2029403 48.8658963,-124.2033335 48.8659029,-124.2034588 48.8658654000001,-124.2034906 48.8658182,-124.2034447 48.8657724,-124.203297 48.8657185000001,-124.203148 48.8656980000001,-124.2027598 48.865705,-124.20221 48.8655579000001,-124.2017332 48.8654932000001,-124.200973 48.8654362,-124.2006816 48.8654025000001,-124.200004 48.8651794,-124.1997069 48.8650816000001,-124.1995273 48.8650453000001,-124.1992556 48.8650290000001,-124.1988955 48.8649418000001,-124.1987556 48.8649332000001,-124.1986996 48.8649719000001,-124.1986801 48.8650336000001,-124.1986764 48.8650454,-124.1987314 48.8651373000001,-124.1988681 48.8651927000001,-124.1992515 48.8652406000001,-124.1995975 48.8653437,-124.2000068 48.8655325,-124.2005013 48.8657606,-124.2005178 48.8657682))"
}, {
"seq":"4",
"node":"13891",
"edge":"13862",
"cost":"0.00076542396749831",
"st_astext":"MULTILINESTRING((-124.4606302 49.3438327000001,-124.4605727 49.3436995000001,-124.4604416 49.3435897000001,-124.4602789 49.3435198000001,-124.4601008 49.3434993000001,-124.4599664 49.3435289000001,-124.4598809 49.3436195,-124.4598941 49.3441714000001,-124.4599637 49.3442309000001,-124.4600623 49.3442440000001,-124.4601711 49.3441961,-124.4606302 49.3438327000001))"
}, {
"seq":"5",
"node":"3684",
"edge":"28825",
"cost":"0.00117904724673861",
"st_astext":"MULTILINESTRING((-123.3495787 48.4045938,-123.3496211 48.4041484000001,-123.3493846 48.4033146,-123.3492248 48.4032068000001,-123.3490655 48.4031857000001,-123.3489141 48.4032153000001,-123.3486746 48.4033022,-123.3486286 48.4034498,-123.3494207 48.4043084,-123.3495787 48.4045938))"
}, {
"seq":"6",
"node":"12168",
"edge":"11270",
"cost":"0.00109953281896407",
"st_astext":"MULTILINESTRING((-123.4652201 48.4475155000001,-123.4648358 48.4482124,-123.4650847 48.4482788,-123.4654424 48.4475732000001,-123.4652201 48.4475155000001))"
}];
var paths = data.map(({st_astext}) => {
const [ _ ,numsStr ] = st_astext.match(/\(\((.*)\)\)/);
const arr = numsStr.split(',').map(pair => pair.split(' ').map(Number))
return arr;
});
console.log(paths);

JSON can't be parsed using Javascript

I have the following JSON reply from a PHP file:
[
{
"color": "black",
"product_name": "Prod2",
"revision": "apps/"
},
{
"color": "green",
"product_name": "Prod1",
"revision": "dev/"
}
]
(tested OK on JSONLint)
And Javascript:
$(document).ready(function(){
$('.target').keyup(function() {
var package_name = "name";
var package_version = "version";
var filter_results = "filter";
$.post('includes/package_filter.php', { package_name: package_name, package_version: package_version, filter_results: filter_results }, function(return_result) {
obj = JSON.parse(return_result);
alert(obj.product_name);
var existingDiv = document.getElementById('other');
existingDiv.innerHTML = CreateTable(return_result);
});
});
});
The return_result doesn't seem to be correct since I get Error: SyntaxError: JSON.parse: unexpected end of data when doing the JSON.parse
I also don't go further to the alrt...
What could be wrong?
My PHP file is similar to:
<?php
function package_filter($package_name, $package_version, $filter_results){
foreach ($descriptions as $descriptions_display) {
...
$array_to_return[] = array('color' => $color , 'product_name' => $descriptions_display['product_name'] , 'revision' => $descriptions_display['revision']);
}
return json_encode($array_to_return);
}
?>
My goal is to create a table with my CreateTable function but there is something wrong before.

When dealing with JSON just set fourth parameter in post() method to json:
$.post('includes/package_filter.php', { /* params */ }, function(return_result) {
// return_result[0].product_name;
}, 'json');

Check the encoding of the response UTF-8 ASCII you may have Characters that are messing up with the parser.

How to output something from a json object?

I have the following json:
"responseData":{
"results":[
{
"GsearchResultClass":"GimageSearch",
"width":"600",
"height":"530",
"imageId":"ANd9GcRnCkl_5N-gAKDeyTvALVLqZJsTUP4M24qEL6MlBB3cOZo-yyAIAoNbJHkR",
"tbWidth":"135",
"tbHeight":"119",
"unescapedUrl":"http://www.harlemfur.com/images/Dog_Olive.jpg",
"url":"http://www.harlemfur.com/images/Dog_Olive.jpg",
"visibleUrl":"www.harlemfur.com",
"title":"\u003cb\u003eDogs\u003c/b\u003e Archives",
"titleNoFormatting":"Dogs Archives",
"originalContextUrl":"http://www.harlemfur.com/dogs/",
"content":"This note below is from a \u003cb\u003edog\u003c/b\u003e",
"contentNoFormatting":"This note below is from a dog",
"tbUrl":"http://t0.gstatic.com/images?q\u003dtbn:ANd9GcRnCkl_5N-gAKDeyTvALVLqZJsTUP4M24qEL6MlBB3cOZo-yyAIAoNbJHkR"
},
{
"GsearchResultClass":"GimageSearch",
"width":"400",
"height":"366",
"imageId":"ANd9GcRde3tgTE21xhyW1CYlhQyrgvgd3ubj72GK7jl50GqXdC6QrGcVFXbD0w",
"tbWidth":"124",
"tbHeight":"113",
"unescapedUrl":"http://static.howstuffworks.com/gif/dog-best-friend-1.jpg",
"url":"http://static.howstuffworks.com/gif/dog-best-friend-1.jpg",
"visibleUrl":"animals.howstuffworks.com",
"title":"HowStuffWorks \u0026quot;Is a \u003cb\u003edog\u003c/b\u003e really a man\u0026#39;s best friend?\u0026quot;",
"titleNoFormatting":"HowStuffWorks \u0026quot;Is a dog really a man\u0026#39;s best friend?\u0026quot;",
"originalContextUrl":"http://animals.howstuffworks.com/pets/dog-best-friend.htm",
"content":"See more \u003cb\u003edog\u003c/b\u003e images.",
"contentNoFormatting":"See more dog images.",
"tbUrl":"http://t3.gstatic.com/images?q\u003dtbn:ANd9GcRde3tgTE21xhyW1CYlhQyrgvgd3ubj72GK7jl50GqXdC6QrGcVFXbD0w"
},
{
"GsearchResultClass":"GimageSearch",
"width":"400",
"height":"358",
"imageId":"ANd9GcRq2Pn5YCq81h03V0Gv8mDrs00vFqQVFqdvMEFo3EIFuv7ILCq4wgoJwiA",
"tbWidth":"124",
"tbHeight":"111",
"unescapedUrl":"http://www.mydogneeds.com/dog-groups/herding-dogs/german-shepherd-dog.jpg",
"url":"http://www.mydogneeds.com/dog-groups/herding-dogs/german-shepherd-dog.jpg",
"visibleUrl":"www.mydogneeds.com",
"title":"German Shepherd, Herding \u003cb\u003eDog\u003c/b\u003e Breeds",
"titleNoFormatting":"German Shepherd, Herding Dog Breeds",
"originalContextUrl":"http://www.mydogneeds.com/dog-groups/dog-breed-german-shepherd-dog.html",
"content":"Herding \u003cb\u003eDog\u003c/b\u003e Breeds - German",
"contentNoFormatting":"Herding Dog Breeds - German",
"tbUrl":"http://t1.gstatic.com/images?q\u003dtbn:ANd9GcRq2Pn5YCq81h03V0Gv8mDrs00vFqQVFqdvMEFo3EIFuv7ILCq4wgoJwiA"
},
{
"GsearchResultClass":"GimageSearch",
"width":"350",
"height":"349",
"imageId":"ANd9GcTUELr8ovAZ0E_4Gt9zYz3fsc5YG2VL7KOoWbx_hhzwnaLjcGPS0da_hVQ",
"tbWidth":"120",
"tbHeight":"120",
"unescapedUrl":"http://www.costumedogs.com/wp-content/uploads/2007/07/tux.jpg",
"url":"http://www.costumedogs.com/wp-content/uploads/2007/07/tux.jpg",
"visibleUrl":"www.costumedogs.com",
"title":"Poker Games Online",
"titleNoFormatting":"Poker Games Online",
"originalContextUrl":"http://www.costumedogs.com/",
"content":"\u003cb\u003eDog\u003c/b\u003e",
"contentNoFormatting":"Dog",
"tbUrl":"http://t2.gstatic.com/images?q\u003dtbn:ANd9GcTUELr8ovAZ0E_4Gt9zYz3fsc5YG2VL7KOoWbx_hhzwnaLjcGPS0da_hVQ"
}
],
"cursor":{
"pages":[
{
"start":"0",
"label":1
},
{
"start":"4",
"label":2
},
{
"start":"8",
"label":3
},
{
"start":"12",
"label":4
},
{
"start":"16",
"label":5
},
{
"start":"20",
"label":6
},
{
"start":"24",
"label":7
},
{
"start":"28",
"label":8
}
],
"estimatedResultCount":"158000000",
"currentPageIndex":0,
"moreResultsUrl":"http://www.google.com/images?oe\u003dutf8\u0026ie\u003dutf8\u0026source\u003duds\u0026start\u003d0\u0026hl\u003den\u0026q\u003ddog"
}
},
"responseDetails":null,
"responseStatus":200
How can I loop through it to get url of all 4 results objects?
Just trying to understand how data from json is extracted.

Just like you would with any other JavaScript object.
var results = responseData.results;
var i;
for (i = 0; i < results.length; i++) {
// Do something with results[i].url
}

check this link.. it says all about parsing json in js:
http://www.json.org/js.html
code:
<script language="javascript">
var k= {"responseData":{
/*** rest of code ****/
},
"responseDetails":null,
"responseStatus":200};
for (i = 0; i < k.responseData.results.length; i++)
{
alert(k.responseData.results[i].url);
}
</script>