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I am having the below array
const a1 = [1,2,3];
and want to convert it into
const b1 = [{id:1},{id:2},{id:3}];
Is there a quick way in doing in javascript
Use Array.map()
const a1 = [1,2,3];
const b1 = a1.map(val => ({id: val}));
console.log(b1);
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I have an array like this
var array = [["Fitim",13],["Faltin Developer",1],["Local",1]]
i want to get an object like this:
var totalUsers= [{ Fitim:13},{Faltin Developer: 1},{Local:1}]
how can i do this
You can make use of a simple map function to achieve this:
const userArray = [
["Fitim", 13],
["Faltin Developer", 1],
["Local", 1]
];
console.log(
userArray.map((user) => ({
[user[0]]: user[1],
}))
);
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suppose the object is obj ={foo:"bla,bla2,bla3",bar:"bla,bla5"}
I want to convert it to 'obj={foo:["bla","bla2","bla3"],bar:["bla","bla5"]}'
Don't know why you want to do that, but here you can just loop through obj with a for...in loop and split the strings by commas:
const obj = {foo:"bla,bla2,bla3",bar:"bla,bla5"};
for (name in obj) {
obj[name] = obj[name].split(',');
}
console.log(obj)
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With the following array of strings in javascript, is there a way to use the .filter to filter by the first word?
['Desk_One', 'Desk_Two', 'Desk_Three', 'Chair_One', 'Chair_Two']
For example to .filter(x = 'Desk_*')
['Desk_One', 'Desk_Two', 'Desk_Three']
Maybe this needs to be a regex
You can use startsWith() function like this:
let array = ['Desk_One', 'Desk_Two', 'Desk_Three', 'Chair_One', 'Chair_Two'];
let result = array.filter((item)=>item.startsWith(array[0].split('_')[0]));
console.log(result)
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I want to compare two arrays
array1=["123',"456"];
array2=[{id":"001",name:"prashant"},{id:"123",name:"jhh"},{id:"123444",name"baak"},{id:"456",name"sxs"}];
my objective is to extract the objects from array2 whose ids match the values in array1.
Can someone help me with the optimal solution?
First of all your second array (array2) is syntactically invalid.
You can try with Array.prototype.filter() and Array.prototype.includes()
var array1=["123","456"];
var array2 = [{id:"001",name:"prashant"},{id:"123",name:"jhh"},{id:"123444",name:"baak"},{id:"456",name:"sxs"}];
var res = array2.filter(i => array1.includes(i.id));
console.log(res);
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I got a key-value object like this:
items = {1:"a",2:"v",3:"u"};
But i want it like this.
items = [{"key":"1","value","a"},{"key":"2","value","v"},{"key":"3","value","u"}];
What is the best way to do this?
I have already tried to do this with $.each.
var items = {1:"a",2:"v",3:"u"};
var newItems = [];
$(items).each(function(k,v){
newItems.push({"key":k,"value":v});
});
And please tell me what is wrong with this question!
Try this-
var items = {1:"a",2:"v",3:"u"};
var obj=[];
for(var i in items){
obj.push({"key":i,"value":items[i]});
}
console.log(obj)