[英]How to push arrays into a nested array?
I am trying to push multiple arrays into the column section. 我正在尝试将多个数组推入列部分。
.then(body => {
this.options = {
padding: {
left: 100,
right: 100
},
data: {
columns: [
],
}
}
}
I have an array that contains a list of arrays. 我有一个包含数组列表的数组。
let new_array = {['test1', 2,3,5,6], ['test2', 5,3,9,6], ['test3', 1,2,5,2]}
I tried to write a function to push the arrays into columns, but I'm not sure what I'm doing wrong. 我试图编写一个将数组推入列的函数,但是我不确定自己做错了什么。 I'm not sure how to push things into columns. 我不确定如何将事情推入列中。
function populateColumn(new_array) {
for (var i in new_array) {
this.options['data']['columns'].push(new_array[i]);
}
}
How do I accomplish this? 我该如何完成?
If you want flat array, use this.options['data']['columns'].push(...new_array[i]);
如果需要平面数组,请使用this.options['data']['columns'].push(...new_array[i]);
instead of this.options['data']['columns'].push(new_array[i]);
而不是this.options['data']['columns'].push(new_array[i]);
or use this.options['data']['columns'] = this.options['data']['columns'].concat(new_array[i])
或使用this.options['data']['columns'] = this.options['data']['columns'].concat(new_array[i])
Yes, and new_array
should be an array, not object. 是的,并且new_array
应该是一个数组,而不是对象。
You could do it using spread operator : 您可以使用传播运算符 :
const options = { data: { columns: [] } }; const new_array = [ ["test1", 2, 3, 5, 6], ["test2", 5, 3, 9, 6], ["test3", 1, 2, 5, 2] ]; function populateColumn(array) { options.data.columns = [...array]; } populateColumn(new_array); console.log('options.data.columns:', options.data.columns);
You seem to have an invalid object, you might want to update new_array from 您似乎有一个无效的对象,您可能想从以下位置更新new_array
let new_array = {['test1', 2,3,5,6], ['test2', 5,3,9,6], ['test3', 1,2,5,2]}
to 至
let new_array = [['test1', 2,3,5,6], ['test2', 5,3,9,6], ['test3', 1,2,5,2]]
Working demo: https://stackblitz.com/edit/angular-qjwfcq 工作演示: https : //stackblitz.com/edit/angular-qjwfcq
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