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To check the two array of object values based on the respective key?

I am trying to compare two array of object values based on the specific key. Two object has same keys based on that i have to check whether the values are equal or not. One array is actual JSON object and the second one is test data, we have to verify the test data with JSON object and moreover if the test data value is same, it might have some extra space we need to trim that value as well.
var actualObject= [
{
"q1": "componentWillMount"
},
{
"q2": "willComponentUpdate"
},
{
"q3": "setState"
},
{
"q4": "componentUpdated"
}
]
Var testData =[
{q1: "componentWillMount"},
{q2: "willComponentUpdate"},
{q3: " PropTypes"},
{q4: "componentDidMount"}]
I will get the testData values from the Html code, on selection of radio buttons. Now i need to check how many answer are correct with actual JSON.
JS Code for it:
var marks= 0;
var wrong = 0;
for(var k =0 ; k<actualObject.length;k++){
if(JSON.stringify(actualObject[k]) == JSON.stringify(testData[k])){
marks++;
}
else {
wrong++;
}
}
var actualObject = [{
"q1": "componentWillMount"
},
{
"q2": "willComponentUpdate"
},
{
"q3": "setState"
},
{
"q4": "componentUpdated"
}
]
var testData = [{
q1: "componentWillMount"
},
{
q2: "willComponentUpdate"
},
{
q3: " PropTypes"
},
{
q4: "componentDidMount"
}
];
var marks = 0;
var wrong = 0;
for (var k = 0; k < actualObject.length; k++) {
if (JSON.stringify(actualObject[k]) == JSON.stringify(testData[k])) {
marks++;
} else {
wrong++;
}
}
console.log(marks, wrong);
Actually i would like to take value from each key and compare it with the actualObject.

If I understand correctly something like this should work:
Object.entries(testData).forEach(function (entry) {
if (actualObject[entry[0]] === entry[1].trim()) {
//answers match
} else {
//answers don't match
}
});
If you need to compare regardless of case then change entry[1].trim() to entry[1].trim().toLowerCase().
EDIT:
Just to remind you that maybe you should add a check whether or not the values in the test data are null/undefined, if they are strings or not, etc.

How to print JSON file Using Java Script

var user_business_data =[
{
"user_id":"5db3e3b1",
"blog":{
"blog_id":"128c522e"
},
"business_units":[
{
"business_unit_id":"000396c9",
"viewing":101
},
{
"business_unit_id":"01821e44",
"viewing":102
},
{
"business_unit_id":"02cbcad5",
"viewing":103
}
]
}
]
I want to get all the "business_unit_id" and store in a varible. for this i need get all the "business_unit_id". so i tried to print all the id's with the below code but i was unable to print.
if (undefined !== user_business_data.business_units && user_business_data.business_units.length) {
for(var i=0;i<user_business_data.business_units.length;i++){
var key = user_business_data.business_units[i];
console.log("Key : "+key, "Values : "+user_business_data.business_units[key]);
}
} else {
console.log("Undefined value");
}
There always i am getting undefined value.

var user_business_data=[{"user_id":"5db3e3b1","blog":{"blog_id":"128c522e"},"business_units":[{"business_unit_id":"000396c9","viewing":101},{"business_unit_id":"01821e44","viewing":102},{"business_unit_id":"02cbcad5","viewing":103}]}]
var unit_ids = [];
user_business_data.forEach(function(user) {
user.business_units.forEach(function(business) {
unit_ids.push(business.business_unit_id);
});
});
console.log(unit_ids);

user_business_data is an array, not an object, so you either need to loop through it or read a specific index from it.
Also, key in your code will be an object (a single business unit object), so you can't print it directly - instead you need to fetch a specific property within the object.
Here's a simple demo reading the first key from the outer array and then listing all the specific properties from the business units. The code can be simplified further potentially, but this illustrates the point:
var user_business_data =
[{
"user_id": "5db3e3b1",
"blog": {
"blog_id": "128c522e"
},
"business_units": [{
"business_unit_id": "000396c9",
"viewing": 101
},
{
"business_unit_id": "01821e44",
"viewing": 102
},
{
"business_unit_id": "02cbcad5",
"viewing": 103
}
]
}]
if (undefined !== user_business_data[0].business_units && user_business_data[0].business_units.length) {
for (var i = 0; i < user_business_data[0].business_units.length; i++) {
var key = user_business_data[0].business_units[i].business_unit_id;
console.log("Key : " + key, "Values : " + user_business_data[0].business_units[i].viewing);
}
} else {
console.log("Undefined value");
}
I suggest you get clear in your head the difference between arrays, objects and properties in JSON / JS objects, and then this kind of thing will become trivial.

user_business_data is an array and not an object.If you want to access any object from an array you have to specify the index as of which position you are referring.Therefore in your example change it to following to work:
if (undefined !== user_business_data[0].business_units && user_business_data[0].business_units.length) {
for(var i=0;i<user_business_data[0].business_units.length;i++){
var key = user_business_data[0].business_units[i]. business_unit_id;
console.log("Key : "+key, "Values : "+user_business_data[0].business_units[key]);
}
} else {
console.log("Undefined value");
}

It's because user_business_data is an array, not an object yet you access it like user_business_data.business_units instead of user_business_data[0].business_units
var user_business_data = [{"user_id": "5db3e3b1","blog": {"blog_id": "128c522e"}, "business_units": [{"business_unit_id": "000396c9","viewing": 101}, {"business_unit_id": "01821e44","viewing": 102},{"business_unit_id": "02cbcad5","viewing": 103}]}];
// Both methods give the same result, but the second checks for null values.
var ids1 = user_business_data[0].business_units.map(x => x.business_unit_id)
console.log('Method 1:', ids1);
// The && check for null values, kinda like an if statement.
var data = user_business_data.length && user_business_data[0]
var units = data && data.business_units
var ids2 = units && units.length && units.map(x => x.business_unit_id)
console.log('Method 2:', ids2)

If you want to print only the business_unit_ids then you can do as follows:
var user_business_data =
[
{
"user_id": "5db3e3b1",
"blog": {
"blog_id": "128c522e"
},
"business_units": [
{
"business_unit_id": "000396c9",
"viewing": 101
},
{
"business_unit_id": "01821e44",
"viewing": 102
},
{
"business_unit_id": "02cbcad5",
"viewing": 103
}
]
}
]
for(var i=0;i<user_business_data[0]["business_units"].length;i++){
console.log(user_business_data[0]["business_units"][i].business_unit_id)
}

Extract values from JSON

I have the below JSON string. The id-dashes in the file are not optional unfortunately, neither is the syntax. I would like to extract the "dd" values with JavaScript/Node.
{
"a-id":{
"b-id":"random",
"bb-id":"random",
"bbb-id":"random",
"bbbb-id":{
"c":[
{
"d":"random",
"dd":"This_info_is_needed"
},
{
"d":"random",
"dd":"This_info_is_needed"
},
{
"d":"random",
"dd":"This_info_is_needed"
},
{
"d":"random",
"dd":"This_info_is_needed_2"
}
]
},
"bbbbb-id":"random",
"bbbbbb-id":"random"
}
}
I would be open to use any additional helper like lodash, jQuery, etc.
The output should be an array with: This_info_is_needed and This_info_is_needed_2.
Thank you in advance.

You can create custom function that will search your data deep and return value if key is dd using for...in loop.
var obj = {"a-id":{"b-id":"random","bb-id":"random","bbb-id":"random","bbbb-id":{"c":[{"d":"random","dd":"This_info_is_needed"},{"d":"random","dd":"This_info_is_needed"},{"d":"random","dd":"This_info_is_needed"},{"d":"random","dd":"This_info_is_needed"}]},"bbbbb-id":"random","bbbbbb-id":"random"}}
function getDD(data) {
var result = []
for(var i in data) {
if(i == 'dd') result.push(data[i])
if(typeof data[i] == 'object') result.push(...getDD(data[i]))
}
return result
}
console.log(getDD(obj))

If you just interested in the values only, can also just do this:
var obj = {"a-id":{"b-id":"random","bb-id":"random","bbb-id":"random","bbbb-id":{"c":[{"d":"random","dd":"This_info_is_needed"},{"d":"random","dd":"This_info_is_needed"},{"d":"random","dd":"This_info_is_needed"},{"d":"random","dd":"This_info_is_needed"}]},"bbbbb-id":"random","bbbbbb-id":"random"}};
var desiredResults = obj['a-id']['bbbb-id']['c'].map(function(data){return data.dd});
console.log(desiredResults);

Accessing json using a string

I have some json : data.
I have a string build that looks like this:
sections.1.subsections.0.items.0.citation.paragraph
What I need to do is manipulate that string to be able to access that value in data. So turn it into something usable:
data['sections'][1]['subsections'][0]['items'][0]['citation']['paragraph']
And then use it to change that value in data. So:
data['sections'][1]['subsections'][0]['items'][0]['citation']['paragraph'] = 'new value'
I can split the original string on the . and I think that gets me somewhere but I'm not at all sure how to then re-use the parts to allow me access to that value in data.
Thanks!

I'm still not quite sure why you're handling the JSON in this fashion but if it has to be done this way, then you'll need to use recursion to access the data. Assuming I mapped your object correctly, the example below should provide you with a method for doing this:
var data = {
sections: [
{
subsections: []
},
{
subsections: [
{
items: [
{
citation: {
paragraph: "Citation by Warlock"
}
}
]
}
]
}
]
};
var string = "sections.1.subsections.0.items.0.citation.paragraph",
parts = string.split('.');
function getValue(tree, index) {
if(index < (parts.length - 1)) {
return getValue(tree[parts[index]], index + 1);
} else {
return tree[parts[index]];
}
}
function setValue(tree, index, newValue) {
if(index < (parts.length - 1)) {
setValue(tree[parts[index]], index + 1, newValue);
} else {
tree[parts[index]] = newValue;
}
}
alert(getValue(data, 0));
setValue(data, 0, "New Citation By Warlock");
alert(getValue(data, 0));
The idea is that the getValue(...); function steps one layer deep into your JSON and then recursively calls itself. This allows the data to be accessed one step at a time until the last part is retrieved. The value is then returned via the recursion in all the previous function calls.
The same idea is true for setting the value. The setValue(...); function steps into the JSON one layer at a time passing the new value to set until it's reached the last nested layer. The value is then set for the specified property.
EDIT:
A better implementation would be to pass the parts array into the getValue(...); and setValue(...); function to eliminate external dependencies. Then, within the function shift the array's data values to step through the nested layers. This eliminates the need for index tracking based on the original array's values:
var data = {
sections: [
{
subsections: []
},
{
subsections: [
{
items: [
{
citation: {
paragraph: "Citation by Warlock"
}
}
]
}
]
}
]
};
var string = "sections.1.subsections.0.items.0.citation.paragraph",
parts = string.split('.');
function getValue(temp, tree) {
if(temp.length > 1) {
tree = tree[temp[0]];
temp.shift();
return getValue(temp, tree);
} else {
return tree[temp[0]];
}
}
function setValue(temp, tree, newValue) {
if(temp.length > 1) {
tree = tree[temp[0]];
temp.shift();
setValue(temp, tree, newValue);
} else {
tree[temp[0]] = newValue;
}
}
alert(getValue(parts, data));
setValue(parts, data, "New Citation By Warlock");
alert(getValue(parts, data));

Look for a value for a given key in JSON and change the value using javascript

I am looking to write a function which can look up a value based on a key and replace that value with another. The key is a tree from the start node of JSON. Here is the example.
var myData = {
name : 'Dan',
address: {
city : 'Santa Clara',
details : {
'prevhouse' : ''
}
}
}
Input to the function is a key tree. For eg, myData-address-details-prevhouse
When I pass this key with a new value, say 'Texas', the prevhouse value will get changed to the new value I am sending.
and new JSON will be
var myData = {
name : 'Dan',
address: {
city : 'Santa Clara',
details : {
'prevhouse' : 'Texas'
}
}
}
Here is what I wrote so far
var tree = key.split("-");
now the tree variable contains ["myData","address", "details","prevhouse"]
I know that we can access the object using myData[tree[0]][tree[1]][tree[2]], but somehow not able to get it dynamic from parsed value.
how do we generate this dynamically since the length of the depth is not known till runtime.
Hope to get a help.

try with this code:
var myData = {
name: 'Dan',
address: {
city: 'Santa Clara',
details: {
prevhouse: ''
}
}
};
function setAttribute(obj, key, value) {
var i = 1,
attrs = key.split('-'),
max = attrs.length - 1;
for (; i < max; i++) {
attr = attrs[i];
obj = obj[attr];
}
obj[attrs[max]] = value;
console.log('myData=', myData);
}
setAttribute(myData, "myData-address-details-prevhouse", "Texas");
here a working jsfiddle demo; see the console for the result

You should be able to iterate through each key because your JSON is just a JS object. So go through each key, check if it's defined, if it is, use that object for your next check. That'll get you where you want to go. Keep in mind you'll be setting the last key to your value.
basic psuedo-code without dealing with setting:
obj = data;
for (key in keys) {
obj = obj[key]
}

Something like this would do:
function update(node, path, value) {
path = path.split('-');
do {
node = node[path.splice(0, 1)];
} while(path.length > 1);
node[path[0]] = value;
}

Given that myData is the object, I think you should be using myData[tree[1]][tree[2]][tree[3]] and throwing away the first item in the array.
Something like this should work recursively (untested)
function updateValue(obj, key, value)
{
var keys = key.split('-');
updateObjectValue(obj, keys.shift(), value);
}
function updateObjectValue(obj, keyArray, value)
{
if (keyArray.length == 1) {
obj[keyArray[0]] = value;
}
else if (keyArray.length > 1) {
updateObject(obj[keyArray[0]], keyArray.shift(), value);
}
}