Fill array with values from another array

Question

I am trying to fill an array with values from another array. This is what I have by now:

  public data: any[] = [{
  {
    text: 'Category', items: [
      { text: 'All Categories' },
      { text: 'Cat1' },
      { text: 'Cat2' },
      { text: 'Cat3' },
    ]
  }, {
    text: 'Customers', items:
      this.clients_name.map(text => ({ text }))
  }];

where clients_name = ['a', 'b', 'c', 'd']

I expect on console.log data[1] to be:

items: (4) […]
0: Object { text: "a" }    ​​
1: Object { text: "b" }
2: Object { text: "c" }
3: Object { text: "d" }
length: 4
<prototype>: Array []
text: "Customers"

but I get

items: []
length: 0
<prototype>: Array []
text: "Customers"

Why isn't filling the data array properly? Thank you for your time!

Answer 1

看起来像this.clients_name是空数组，请在执行此操作之前尝试对其进行初始化。