I have JSON data like this
{
"nodes": [
{
"node": {
"title": "Kieu Oanh",
"Image": "",
"view_node": "view",
"link": "drupal_dev/content/kieu-oanh"
}
},
{
"node": {
"title": "Kieu Oanh",
"Image": "",
"view_node": "view",
"link": "drupal_dev/content/kieu-oanh"
}
},
]
}
Now I want to convert it to
var rel_data = [{
"title": "asa",
"Image": "sasa",
"view_node": "sajsjla"
}, {
"title": "asa",
"Image": "sasa",
"view_node": "sajsjla"
}]
And This is my code to convert data to rel_data
data = data.nodes;
for (d in data) {
rel_data[d].title = data[d].node.title;
rel_data[d].image = data[d].node.Image;
}
for (d in rel_data) {
alert(rel_data[d].title);
}
But it does not seem to work, is there anything wrong in my code?
You're trying to edit objects which aren't there yet.
The first thing you do is access rel_data while there is no rel_data yet. The second thing you do is that you change properties of array elements which do not exist.
Your code should be the following to work:
data = data.nodes;
rel_data = new Array(); // Create rel_data
for(d in data) {
rel_data[d] = new Object(); // Create array element
rel_data[d].title= data[d].node.title;
rel_data[d].image= data[d].node.Image;
}
for(d in rel_data) {
alert(rel_data[d].title);
}
You could also use map instead of a for loop (for generating the new array, you'd want one for the alert())
var rel_Data = data.nodes.map(function(item) {
return {
"title": item.node.title,
"Image": item.node.Image,
"view_node": item.node.view_node
};
});
Related
I have two arrays of object, the first array (printerChart, around 80 elements) is made of the following type of objects:
[{
printerBrand: 'Mutoh',
printerModel: 'VJ 1204G',
headsBrand: 'Epson',
headType: '',
compatibilty: [
'EDX',
'DT8',
'DT8-Pro',
'ECH',
],
},
....
]
The second array (items, around 500 elements) is made of the following type of objects:
[
{
"customData": {
"brand": {
"value": {
"type": "string",
"content": "hp"
},
"key": "brand"
},
"printer": {
"value": {
"type": "string",
"content": "c4280"
},
"key": "printer"
}
},
"name": "DT8 XLXL",
"image": {
"id": "zLaDHrgbarhFSnXAK",
"url": "https://xxxxxxx.net/images/xxxxxx.jpg"
},
"brandId": "xxxxx",
"companyId": "xxxx",
"createdAt": "2018-03-26T14:39:47.326Z",
"updatedAt": "2018-04-09T14:31:38.169Z",
"points": 60,
"id": "dq2Zezwm4nHr8FhEN"
},
...
]
What I want to do is to iterate via the second array and, if the part of the name of an item (i.e. DT8) is included in an element of the array 'compatibility' of the first array, I would like to include a new properties to it from the element of the first array: printerBrand. I have tried but somehow the iteration doesn't take place correctly. This is what I tried:
items.forEach((item) => {
printerChart.forEach((printer) => {
if (printer.compatibilty.some(compatibleElem => (
item.name.includes(compatibleElem)))) {
item.printerBrand = printer.printerBrand;
} else {
item.printerBrand = '';
}
});
});
What am I doing wrong?
You do
items.items.forEach(...)
Shouldn't you be doing
items.forEach(...)
?
I suggest to initialize item.printerBrand with an empty string and use a nested approach of some for getting a brand and to exit the loops, if found.
This prevents to get an empty string even if there is a brand to assign.
items.forEach((item) => {
item.printerBrand = '';
printerChart.some(printer => {
if (printer.compatibilty.some(compatibleElem => item.name.includes(compatibleElem))) {
item.printerBrand = printer.printerBrand;
return true;
}
});
});
I have an existing array with multiple object. With an interval I would like to update the existing array with values from another array. See the (simplified) example below.
I've serverall gools:
Copy the value of fan_count form the new array, to the current array with the key "fan_count_new"
If a object is removed or added in the New array, it have to do the same to the Current array.
As far I can see now, I can use some es6 functions :) like:
object-assign, but how to set the new key "fan_count_new"?
How to loop through the array to compare and add or remove + copy the fan_count?
Current array:
[{
"fan_count": 1234,
"id": "1234567890",
"picture": {
"data": {
"url": "https://scontent.xx.fbcdn.net/v/photo.png"
}
}
},
{
"fan_count": 4321,
"id": "09876543210",
"picture": {
"data": {
"url": "https://scontent.xx.fbcdn.net/v/photo.png"
}
}
}, ...
]
New array:
[{
"fan_count": 1239,
"picture": {
"data": {
"url": "https://scontent.xx.fbcdn.net/v/photo.png"
}
"id": "1234567890"
},
{
"fan_count": 4329,
"picture": {
"data": {
"url": "https://scontent.xx.fbcdn.net/v/photo.png"
}
},
"id": "09876543210"
}, ...
]]
You can remove elements which doesn't exists in new array by using array.filter and you can loop through the new array to update the same object in the current array:
var currArr = [
{
"fan_count": 1234,
"id": "1234567890",
},
{
"fan_count": 4321,
"id": "09876543210",
},
{
"fan_count": 4321,
"id": "09876543215",
}
];
var newArr = [
{
"fan_count": 1234,
"id": "1234567890"
},
{
"fan_count": 5555,
"id": "09876543210"
}
];
currArr = currArr.filter(obj => newArr.some(el => el.id === obj.id));
newArr.forEach(obj => {
var found = currArr.find(o => o.id === obj.id);
if (found) {
found.fan_count_new = obj.fan_count;
}
});
console.log(currArr);
Later on I realised that is was better to turn it around, add the fan_count form the currArr to the new one. This because it is easier to handle new objects, and you dont't have to deal with deleted objects. So, anybody how is looking for something like this:
newArr.forEach(obj => {
var found = currArr.find(o => o.id === obj.id);
if (found) {
console.log('found: ', found.fan_count, obj.fan_count)
obj.fan_count_prev = found.fan_count;
obj.fan_count_diff = Math.round(obj.fan_count - found.fan_count);
}
if (typeof obj.fan_count_prev === "undefined") {
obj.fan_count_prev = obj.fan_count;
obj.fan_count_diff = 0
}
});
Working on JavaScript app and need help in creating a new object from response received from ajax call.
The output received is array of objects, sample format below:
{
"items": [
{
"id": "02egnc0eo7qk53e9nh7igq6d48",
"summary": "Learn to swim",
"start": {
"dateTime": "2017-03-04T19:00:00+05:30"
}
}
]
}
However, my component expects JS Object in the following format:
{
id: "e1",
title: "Express",
start: "Jan 13, 2010",
description: "Jan 13, 2010"
}
Is following approach correct, please suggest better approach if any
var content = {
"items": [{
"id": "02egnc0eo7qk53e9nh7igq6d48",
"summary": "Learn to code",
"start": {
"dateTime": "2017-03-04T19:00:00+05:30"
}
}
}
};
var gcalEvents = {};
var jsonObj = {
"id": "e1",
"title": "Oracle Application Express",
"start": "Jan 13, 2010",
"description": "Jan 13, 2010"
};
console.log(content.items.length);
for (var index = 0; index < content.items.length; index++) {
var obj = content.items;
console.log(obj);
jsonObj.id = obj[index]["id"];
jsonObj.title = obj[index].summary;
jsonObj.start = obj[index].start.dateTime;
jsonObj.description = "";
console.log(jsonObj);
gcalEvents[index] = jsonObj;
}
console.log(gcalEvents);
You could take a more functional approach with the following:
var parsed = content.items.map(function (item) {
return {
id: item.id,
title: item.summary,
start: item.start.dateTime,
description: item.start.dateTime
}
})
This uses the map method that is attributed with arrays to loop over each item of the array and return a new array of parsed objects.
Take a look at this fuller example.
I have another way to convert this content.
Using Underscore.js to make the code more readable.
Here is the example:
var content = {
"items": [{
"id": "02egnc0eo7qk53e9nh7igq6d48",
"summary": "Learn to code",
"start": {
"dateTime": "2017-03-04T19:00:00+05:30"
}
}, {
"id": "nj4h567r617n4vd4kq98qfjrek",
"summary": "Modern Data Architectures for Business Insights at Scale Confirmation",
"start": {
"dateTime": "2017-03-07T11:30:00+05:30"
}
}]
};
var result = _.map(content.items, function(item) {
return {
id: item.id,
title: item.summary,
start: item.start.dateTime,
description: ""
};
});
console.log(result);
<script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js"></script>
The result as following:
[
{
"id": "02egnc0eo7qk53e9nh7igq6d48",
"title": "Learn to code",
"start": "2017-03-04T19:00:00+05:30",
"description": ""
},
{
"id": "nj4h567r617n4vd4kq98qfjrek",
"title": "Modern Data Architectures for Business Insights at Scale Confirmation",
"start": "2017-03-07T11:30:00+05:30",
"description": ""
}
]
At the core, you are trying to 'map' from one set of data to another. Javascript's mapping function of array should be sufficient. Eg.
var content = {
"items": [{
"id": "02egnc0eo7qk53e9nh7igq6d48",
"summary": "Learn to code",
"start": {
"dateTime": "2017-03-04T19:00:00+05:30"
}
}]
};
var results = content.items.map(function (item) {
return {
id: item.id,
title: item.summary,
start: item.start.dateTime,
description: ""
};
});
console.log(results);
var jsonObj=[];
for (var index = 0; index < content.items.length; index++) {
var obj = {};
console.log(obj);
obj["id"]=content.items[index].id;
obj["title"]=content.items[index].summary;
obj["start"]=content.items[index].start.dateTime;
obj["description"]="";
jsonObj.push(obj);
console.log(jsonObj);
//gcalEvents[index] = jsonObj;
}
This will give you jsonObj as your desired json object.
Hope this helps :)
Here's the fixed code:
One error was when you've listed the content items, a "]" was missing at the end.
The second one was that you were trying to assign a values to an undefined object, you first need to define the object eg: jsonObj = {}; and then do the assigning of values.
I've preferred to do the object define and assigning of the values in one go.
In order to have the output as an array, you just have to define the colection as an array and not am object eg: var gcalEvents = []
var content = {
"items": [
{
"id": "02egnc0eo7qk53e9nh7igq6d48",
"summary": "Learn to code",
"start": {
"dateTime": "2017-03-04T19:00:00+05:30"
}
},
{
"id": "nj4h567r617n4vd4kq98qfjrek",
"summary": "Modern Data Architectures for Business Insights at Scale Confirmation",
"start": {
"dateTime": "2017-03-07T11:30:00+05:30"
}
}
]
};
var gcalEvents = [];
var jsonObj = {
"id": "e1",
"title": "Oracle Application Express",
"start": "Jan 13, 2010",
"description": "Jan 13, 2010"
};
//console.log(content.items.length);
for(var index=0; index < content.items.length; index++){
var obj = content.items[index];
//console.log(obj);
jsonObj = {
'id': obj["id"],
'title': obj.summary,
'start': obj.start.dateTime,
'description': ""
}
//console.log(jsonObj);
gcalEvents[index] = jsonObj;
}
console.log(gcalEvents);
I know there are plenty of questions about iterating through JSON objects but I haven't found one that quite relates to my exact problem. This is the JSON that I'm trying to iterate through:
psinsights = {
"kind": "pagespeedonline#result",
"id": "/speed/pagespeed",
"responseCode": 200,
"title": "PageSpeed Home",
"score": 90,
"pageStats": {
"numberResources": 22,
"numberHosts": 7,
"totalRequestBytes": "2761",
"numberStaticResources": 16,
"htmlResponseBytes": "91981",
"cssResponseBytes": "37728",
"imageResponseBytes": "13909",
"javascriptResponseBytes": "247214",
"otherResponseBytes": "8804",
"numberJsResources": 6,
"numberCssResources": 2
},
"formattedResults": {
"locale": "en_US",
"ruleResults": {
"AvoidBadRequests": {
"localizedRuleName": "Avoid bad requests",
"ruleImpact": 0.0
},
"MinifyJavaScript": {
"localizedRuleName": "Minify JavaScript",
"ruleImpact": 0.1417,
"urlBlocks": [
{
"header": {
"format": "Minifying the following JavaScript resources could reduce their size by $1 ($2% reduction).",
"args": [
{
"type": "BYTES",
"value": "1.3KiB"
},
{
"type": "INT_LITERAL",
"value": "0"
}
]
},
"urls": [
{
"result": {
"format": "Minifying $1 could save $2 ($3% reduction).",
"args": [
{
"type": "URL",
"value": "http://code.google.com/js/codesite_tail.pack.04102009.js"
},
{
"type": "BYTES",
"value": "717B"
},
{
"type": "INT_LITERAL",
"value": "1"
}
]
}
},
{
"result": {
"format": "Minifying $1 could save $2 ($3% reduction).",
"args": [
{
"type": "URL",
"value": "http://www.gmodules.com/ig/proxy?url\u003dhttp%3A%2F%2Fjqueryjs.googlecode.com%2Ffiles%2Fjquery-1.2.6.min.js"
},
{
"type": "BYTES",
"value": "258B"
},
{
"type": "INT_LITERAL",
"value": "0"
}
]
}
}
]
}
]
},
"SpriteImages": {
"localizedRuleName": "Combine images into CSS sprites",
"ruleImpact": 0.0
}
}
},
"version": {
"major": 1,
"minor": 11
}
};
Now, I'm trying to write a function that iterates through all of the ruleResults objects and returns an array of the localizedRuleName properties. According to the JSON, ruleResults has three member objects (AvoidBadRequests, MinifyJavaScript, and SpriteImages). Each of these has a localizedRuleName property I'm trying to access, but when I print out my array, it's blank. Here's how I've written my function:
function ruleList(results) {
var ruleArray = [];
for(var ruleName in results.formattedResults.ruleResults){
ruleArray[counter] = results.formattedResults.ruleResults[ruleName].localizedRuleName;
}
return ruleArray;
}
console.log(ruleList(psinsights));
Can you guys help me get on the right track? I used basically this same method to iterate through the pageStats of the JSON and it worked perfectly. I'm not sure why I can't get it to work with these deeper nested objects and properties.
your problem is not your iteration, but your undefined variable "counter".
Instead of using a counter can use the "push" function:
function ruleList(results) {
var ruleArray = [];
for(var ruleName in results.formattedResults.ruleResults){
ruleArray.push(results.formattedResults.ruleResults[ruleName].localizedRuleName);
}
return ruleArray;
}
fiddle: https://jsfiddle.net/fo9h56gh/
Hope this helps.
you're probably getting a javascript error since counter is not defined. you can try this:
function ruleList(results) {
var ruleArray = [];
var counter = 0;
for(var ruleName in results.formattedResults.ruleResults){
ruleArray[counter] = results.formattedResults.ruleResults[ruleName].localizedRuleName;
counter++;
}
return ruleArray;
}
I have a large JSON file, I am trying to pull out specific key blocks but i am unsure on how to do this.
Current JSON file:
{
"blockID1": {
"name": "name here",
"locale": "en_GB"
},
"blockID2": {
"name": "name here",
"locale": "en_GB"
},
"blockID3": {
"name": "name here",
"locale": "en_GB"
},
"blockID4": {
"name": "name here",
"locale": "en_GB"
}
}
I just want to retrieve blockID3 and blockID4 and then I would output into another json file.
{
"blockID3": {
"name": "name here",
"locale": "en_GB"
},
"blockID4": {
"name": "name here",
"locale": "en_GB"
}
}
Does anyone have an example?
Use an array as a lookup and then loop over the object and if a key is found copy the value to the output object.
var obj = {"blockID1":{"name":"name here","locale":"en_GB"},"blockID2":{"name":"name here","locale":"en_GB"},"blockID3":{"name":"name here","locale":"en_GB"},"blockID4":{"name":"name here","locale":"en_GB"}};
var find = ['blockID3', 'blockID4'];
var out = {};
for (var p in obj) {
if (find.indexOf(p) > -1) {
out[p] = obj[p];
}
}
console.log(out);
Not sure if I understood your question but if you want to output something like that, and you have the ids of the json file if you want you could simply do something like this
const props = ['blockID3', 'blockID4'],
json = {"blockID1":{"name":"name here","locale":"en_GB"},"blockID2":{"name":"name here","locale":"en_GB"},"blockID3":{"name":"name here","locale":"en_GB"},"blockID4":{"name":"name here","locale":"en_GB"}},
res = {};
for(const prop of props) {
if(json[prop]) {
res[prop] = prop;
}
});
At the end res will have the objects that you wanted, hope this helps :)