I'm trying to get the values from a multi-dimensional array. This is what I have so far.
I need the value of 99 and the image when I select the first option in the array, eg "Billy Joel".
var concertArray = [
["Billy Joel", "99", "equal.png"],
["Bryan Adams", "89", "higher.png"],
["Brian Adams", "25", "lower.png"]
];
function populate(){
for(i = 0; i < concertArray.length; i++){
var select = document.getElementById("test");
select.options[select.options.length] = new Option(concertArray[i][0], concertArray[i][1]);
}
}
You can try to transform the multi-dimensional array to an array of objects like this:
var concertArray = [
{name: "Billy Joel", value: 99, image: "equal.png"},
{name: "Bryan Adams", value: 89, image: "higher.png"},
{name: "Brian Adams", value: 25, image: "lower.png"}
];
Then you can access the items in the array like regular objects:
var concertName = concertArray[0].name;
var concertPrice = parseFloat(concertArray[0].value);
var concertImage = concertArray[0].image;
let concertArray = [ ["Billy Joel", "99", "equal.png"], ["Bryan Adams", "89", "higher.png"], ["Brian Adams", "25", "lower.png"] ]; let i = 0; console.log(concertArray[i][1]) // 99 console.log(concertArray[i][2]) // equal.png
AFAIK, the Option
constructor only takes two arguments, the text and the value
. If you want to pass more data, I suggest you use the HTML5 data API:
var opt = new Option(concertArray[i][0], concertArray[i][1]);
opt.setAttribute('data-image', concertArray[i][2]);
select.options[select.options.length] = opt;
Then you can grab it using getAttribute('data-image')
You can access values by using 2 for loops as below.
var concertArray = [
["Billy Joel", "99", "equal.png"],
["Bryan Adams", "89", "higher.png"],
["Brian Adams", "25", "lower.png"]
];
function populate(){
for(i=0;i<arr.length;i++)
{
for(j=0;j<arr[i].length;j++)
{
console.log(arr[i][j]);
}
}
}
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.