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I want to have an array containing an object. For example I have an object like this:
parentObj:{
childObj1,
childObj2
}
but I want to have a "parentObj" array and be able to call it like :
parentObj[0].childObj1
I searched a lot but didn't find anything related to this. I'll appreciate if someone can help me with this.
thanks very much
Here's an array of objects:
var a = [
{name: "first"},
{name: "second"}
];
console.log(a[0].name); // "first"
console.log(a[1].name); // "second"
The [] is an array initializer. The {} is an object initializer.
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I would like to know whether it is easier to store all the data from a text input where the user has to enter their surname in an array or in an object. And how do I do so?.
Thanks in advance
You could do something like this:
var dataArray = [];
function storeData() {
var data = document.getElementById("yourInput").value;
dataArray.push(data);
}
This method uses arrays - personally I find them more easier to use than objects.
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I have a function that will take in a JSON object which has a similar structure as follows:-
{
"listing": [
{
"rental_prices": {
"shared_occupancy": "N",
"per_week": 2308,
"accurate": "per_month",
"per_month": 10000
},
"country_code": "gb",
"num_floors": "0",
}
]
}
I want to be able to get all the values for per_month from each sub object of listing I can pull a specific one, i.e. using data.listing[0].rental_prices.per_month but I want to be able to iterate over the object and get the value and push it to a new array each time it comes aross the per_month key
Indeed as #mwilson suggested .map would do the trick in this case.
https://repl.it/repls/TriangularModestNormalform
testJson.listing.map(listing => listing.rental_prices.per_month);
Note: This will return an array with undefined items if per_month doesn't exist, and will also crash if renal_prices doesn't exist
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I have tried everything I can think of to get the data but cannot figure this out.
The data is in a structure like this:
[{"code":1000,"day":"Sunny","night":"Clear","icon":113,"languages":
[{"lang_name":"Arabic","lang_iso":"ar","day_text":"مشمس","night_text":"صافي"}]
}]
I've tried looping, using key:value using the dot notation and bracket notation and cannot get the info.
I'm trying to get to the "languages" so I can parse them for the weather.
var arr = [{"code":1000,"day":"Sunny","night":"Clear","icon":113,"languages":
[{"lang_name":"Arabic","lang_iso":"ar","day_text":"مشمس","night_text":"صافي"}]
}]
arr.forEach(function(obj){ //loop array
obj.languages.forEach(function(language) { //loop languages
console.log(language); //language object
console.log(language.lang_name); //language property
});
});
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still very new in js overall and i'm trying to deep clone this part of code.
$scope.add = function() {
$scope.data.push(Object.assign(mock));
};
If anyone could help me cloning this, would be grateful. Thanks
use angular's .copy() method to clone.
like this
$scope.data.push(angular.copy(mock));
If you want to create an actual clone where changes to the clone don't effect the object you are cloning:
Object.assign({}, mock)
If you are using jQuery, another way to deep copy is by using .extend(true, target, object1 [, objectN ] )
https://api.jquery.com/jquery.extend/
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Below is my JSON object
{"Decision":[{"recid":"1183","reason":"Approved as Requested","decision":"Approved","approvalamt":"","comment":""},{"recid":"662","reason":"3","decision":"Rejected","approvalamt":"","comment":""},{"recid":"752","reason":"Approved People Resources; But No Funding Approved","decision":"Approved","approvalamt":"","comment":""}]}
How do I get length of this.In this example it should return me 3.
My Object name is DecisionObj which have above listed elements.
var string = '{"Decision":[{"recid":"1183","reason":"Approved as Requested","decision":"Approved","approvalamt":"","comment":""},{"recid":"662","reason":"3","decision":"Rejected","approvalamt":"","comment":""},{"recid":"752","reason":"Approved People Resources; But No Funding Approved","decision":"Approved","approvalamt":"","comment":""}]}';
var object = JSON.parse(string);
alert(object.Decision.length);
Arrays have length property. You can use that.
var length = DecisionObj.length;