two-dimensional array nested two-dimensional array into one-dimensional array?
list(newV) {
this.newList = newV;
this.OrderItems = this.newList.map(item => item.OrderItems);
console.log("OrderItems", this.newList);
} data processing returned
map, ,
function flatten(arr) {
var res = [];
arr.map(item => {
if(Array.isArray(item)) {
res = res.concat(flatten(item));
} else {
res.push(item);
}
});
return res;
}this.OrderItems = [].concat(...this.newList.map(item => item.OrderItems));encapsulates a function, which can be called directly
function steamroller(arr) {
const newArr = [];
for (let i = 0; i < arr.length; iPP) {
if (Array.isArray(arr[i])) {
newArr.push(...steamroller(arr[i]));
} else {
newArr.push(arr[i]);
}
}
return newArr;
} try console.log ([... this.newList,... this.OrderItems])
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