var j = 0;
for (j = 0; j < checkInUnit.length; j++) {
adjustArray.push([checkInUnit[j], totalCheckInUserPerUnit[j]]);
}
adjustArray output is 10,1,11,5,12,8,13,2,16,6,17,15,18,15,19,3
If I want to access 10, 11, 12,13,16,17,18 etc?
How can i access using javascript in above context.
if directly then you can go for
adjustArray[1] and so on
OR in loop then in the same way you did checkInUnit
for (j = 0; j < adjustArray.length; j++){
console.log(adjustArray[j]);
}
I hope you get an idea...
You can access elements in an array with square brackets
var firstElement = adjustArray[0]; // note arrays always use 0 based indicies
You can work through each element with a for loop
for(var key in adjustArray){
var thisElement = adjustArray[key];
}
You have a nested array here so you'll want to do something like this
for(var key in adjustArray){
for(var nestedkey in adjustArray[key]){
var thisElement = adjustArray[key][nestedkey];
}
}
Related
I tried to get this to work, but the outer loop stops after second iteration, and everything that's after it does not execute(just like it was the end of the script). I want to fill two dimensional array with any character(here i used 'q' as an example)
var A=[[],[]];
for(var i=0;i<12;i++){
for(var j=0;j<81;j++){
A[i][j]='q';
}
}
It didn't work, so i put alert(i+' '+j); to see if it's even executing, and, as i wrote before, it stops after second iteration of outer loop, and then ignores rest of the script.
All I want is to have this array filled with same character in the given range(12 rows, 81 columns in this specific case), so if there's no hope in this method, i'll be glad to see one that works.
This does the job in one line.
var A = Array(12).fill(null).map(()=>Array(81).fill('q'))
This is an array of references and a bad idea as harunurhan commented.
var A = Array(12).fill(Array(81).fill('q'));
The Array.from() method creates a new, shallow-copied Array instance
from an array-like or iterable object.
function createAndFillTwoDArray({
rows,
columns,
defaultValue
}){
return Array.from({ length:rows }, () => (
Array.from({ length:columns }, ()=> defaultValue)
))
}
console.log(createAndFillTwoDArray({rows:3, columns:9, defaultValue: 'q'}))
var A=[[], []];
^ This line declares a two dimensional array of size 1x2. Try this instead:
var A = [];
for (var i = 0; i < 12; i++) {
A[i] = [];
for (var j = 0; j < 81; j++) {
A[i][j] = 'q';
}
}
Since fill() is the most succinct and intuitive, and it works as intended for immutable values, my preference would be an outer from() and an inner fill():
Array.from({length: 12}, _ => new Array(81).fill('q'));
The best approach to fill up 2D array would be like the following
let array2D = [], row = 3, col = 3, fillValue = 1
for (let i = 0; i < row; i++){
let temp = []
for (let j = 0; j < col; j++){
temp[j] = fillValue
}
array2D.push(temp)
}
You need to initialise a new array for i each time the first loop runs, and you don't need to set the layout of the array before you create it (Remove the [], [] inside the declaration of A). Try this:
var A = [];
for (var i = 0; i < 12; i++) {
A[i] = [];
for (var j = 0; j < 81; j++) {
A[i][j] = 'q';
}
}
console.log(A);
.as-console-wrapper {
max-height: 100% !important;
top: 0;
}
I tried to get this to work, but the outer loop stops after second iteration, and everything that's after it does not execute(just like it was the end of the script). I want to fill two dimensional array with any character(here i used 'q' as an example)
var A=[[],[]];
for(var i=0;i<12;i++){
for(var j=0;j<81;j++){
A[i][j]='q';
}
}
It didn't work, so i put alert(i+' '+j); to see if it's even executing, and, as i wrote before, it stops after second iteration of outer loop, and then ignores rest of the script.
All I want is to have this array filled with same character in the given range(12 rows, 81 columns in this specific case), so if there's no hope in this method, i'll be glad to see one that works.
This does the job in one line.
var A = Array(12).fill(null).map(()=>Array(81).fill('q'))
This is an array of references and a bad idea as harunurhan commented.
var A = Array(12).fill(Array(81).fill('q'));
The Array.from() method creates a new, shallow-copied Array instance
from an array-like or iterable object.
function createAndFillTwoDArray({
rows,
columns,
defaultValue
}){
return Array.from({ length:rows }, () => (
Array.from({ length:columns }, ()=> defaultValue)
))
}
console.log(createAndFillTwoDArray({rows:3, columns:9, defaultValue: 'q'}))
var A=[[], []];
^ This line declares a two dimensional array of size 1x2. Try this instead:
var A = [];
for (var i = 0; i < 12; i++) {
A[i] = [];
for (var j = 0; j < 81; j++) {
A[i][j] = 'q';
}
}
Since fill() is the most succinct and intuitive, and it works as intended for immutable values, my preference would be an outer from() and an inner fill():
Array.from({length: 12}, _ => new Array(81).fill('q'));
The best approach to fill up 2D array would be like the following
let array2D = [], row = 3, col = 3, fillValue = 1
for (let i = 0; i < row; i++){
let temp = []
for (let j = 0; j < col; j++){
temp[j] = fillValue
}
array2D.push(temp)
}
You need to initialise a new array for i each time the first loop runs, and you don't need to set the layout of the array before you create it (Remove the [], [] inside the declaration of A). Try this:
var A = [];
for (var i = 0; i < 12; i++) {
A[i] = [];
for (var j = 0; j < 81; j++) {
A[i][j] = 'q';
}
}
console.log(A);
.as-console-wrapper {
max-height: 100% !important;
top: 0;
}
I have an array of data as follows:
var Sonuc = [[{"ID":8,"Number":"1","Name":"Ahmet"}],
[{"ID":7,"Number":"2","Name":"Semih"}],
[{"ID":6,"Number":"3","Name":"Derviş"}],
[{"ID":8,"Number":"4","Name":"Derviş"},{"ID":9,"Number":"4","Name":"Veli"}],
[{"ID":11,"Number":"44","Name":"Zeki"},{"ID":45,"Number":"44","Name":"Veli"}]]
I tried to write datas to console for each object as follows, but it does not work:
for (var i = 0; i < 3; i++) {
for(var obj in Sonuc[i]) {
console.log(obj.Number);
};
}
How can I output the Number value for each data on console?
The problem is that you have an array or arrays, with the sub-arrays each containing one or more objects.
Your problem is you are not specifying the index for the sub-arrays. You can access the first object like this:
console.log(obj[0].Number);
That will get you some output at at least, but it is confusing exactly what data you want to get. That 3 loop makes no sense...
If you want to output all objects, then you should first loop the sub-arrays, and then loop the objects. Something like this:
var Sonuc = [[{"ID":8,"Number":"1","Name":"Ahmet"}],
[{"ID":7,"Number":"2","Name":"Semih"}],
[{"ID":6,"Number":"3","Name":"Derviş"}],
[{"ID":8,"Number":"4","Name":"Derviş"},{"ID":9,"Number":"4","Name":"Veli"}],
[{"ID":11,"Number":"44","Name":"Zeki"},{"ID":45,"Number":"44","Name":"Veli"}]];
for (var i = 0; i < Sonuc.length; i++) {
var arr = Sonuc[i];
for (var j = 0; j < arr.length; j++) {
var obj = arr[j];
console.log(obj.Number);
}
}
I am creating an object with my XML data and pushing into the array. But when it coming out from the method I can see all the array value is copy of first one. Can anyone help me.
Here is my code :
var obj = {};
for(var i = 1; i < myData.length; i++) {
var myDAtt = myData[i].getElementsByTagName('D');
for(var j = 0; j < myDAtt.length; j++){
obj[myDAtt[j].getAttribute('dataIndex')] = myDAtt[j].getAttribute('V')
}
me.Rec.push(obj);
}
You need to create a new object in the top level for loop. In your case you have only one variable, for which you are adding properties and push into the array it's reference. So at the end you have one big object and pushed the reference of it into the array for many times.
for(var i = 1; i < myData.length; i++) {
var obj = {};
var myDAtt = myData[i].getElementsByTagName('D');
for(var j = 0; j < myDAtt.length; j++) {
obj[myDAtt[j].getAttribute('dataIndex')] = myDAtt[j].getAttribute('V')
}
me.Rec.push(obj);
}
I’m looking to use arrays to create unique names for variables. I am not looking to store any calculated values in the arrays, but rather be able to declare variables using arrays to store the values. My attempts and research how to accomplish this leads me to think that it’s not even possible. I’d appreciate it if someone could let me know and if it is possible an answer/example on how to do it. I’ll post a simplified example on what I’m hoping to get working.
var indices = ["index01", "index02", "index03"];
var keys = ["key01", "key02", "key03"];
for (var index = 0; index < indices.length; index++)
{
for (var key = 0; key < keys.length; key++)
{
var indices[index]+keys[key] //Looking for var index01key01, var index01key02 etc...
}
}
Well, basic javascript variables are in the window scope, so try:
var indices = ["index01", "index02", "index03"];
var keys = ["key01", "key02", "key03"];
for (var index = 0; index < indices.length; index++)
{
for (var key = 0; key < keys.length; key++)
{
// you can now use the variable as window.index01key01, or just index01key01
window[indices[index]+keys[key]] = null;
}
}