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I am reading a file which have the following data. And i am assigning it to arr.
[
{
"data": {
"One": {
"One one": [
"Hello"
]
}
},
"name": "1898061c-bd49-4e35-bfb6-6514fbe9c5c4"
}
]
When i access the first element like console.log(arr.length) it gives me 1 in chrome console (manually declaring array there). which is fine.
But when i console log to actual terminal it gives me 209.
Make sure that the "arr" object is an array and not a string.
The array has length one, the stringified JSON of the array has length 209:
JSON.stringify(arr, null, 4).length; // => 209
Related
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I wanna find a string inside an array by some part of its name(at least more than 3characters), Like:
Buffalo is an index of array and I want to search buf or buff, buffa, buffal or even the hole word(buffalo) and it return Buffalo.
No matter if its case-sensitive or NOT
here is my array:
const carsName =
[
"Landstalker",
"Bravura",
"Buffalo",
"Linerunner",
"Perrenial",
"Sentinel",
"Dumper",
"Firetruck",
"Trashmaster",
"Stretch",
"Manana",
"Infernus"
]
I wrote it in PAWN once and I'm gonna write it in JS (for my Alt V server) but I'm stuck at this point, is it possible to do?
and at the end, sorry for my English
Case insensitive partial match:
const carsName = [
"Landstalker",
"Bravura",
"Buffalo",
"Linerunner",
"Perrenial",
"Sentinel",
"Dumper",
"Firetruck",
"Trashmaster",
"Stretch",
"Manana",
"Infernus",
];
const partial = 'buf';
const foundName = carsName.find(
name => name.toLowerCase().includes(partial.toLowerCase())
);
console.log(foundName);
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I'm confused on the behavior of this expression in JavaScript:
[] + "abc"
I am expecting it to simply produce an array with element 0 being undefined and element 1 being "abc":
[, "abc"]
but the result is:
["a", "b", "c"]
This seems perhaps non-intuitive. Why is the behavior?
A string is returned because [] is casted as "".
`console.log([].toString());// ""
const a = [] + "abc";
console.log(a);// "abc"
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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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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.