加入嵌套数组并输出逗号分隔的列表

Question

I would like to print a comma-separated list of items in an array.

Example:

[
{value: 1, text: 'one},
{value: 2, text: 'two},
{value: 3, text: 'three},
{value: 4, text: 'four},
]

I thought about solving this with Array.join ( https://developer.mozilla.org/de/docs/Web/JavaScript/Reference/Global_Objects/Array/join ) - but this is not working with arrays containing more information, as the output is [object Object] .

How can I "pick" the value and join the value so I'm getting one, two, three, four as output?

Answer 1

You'll want to map over your array to grab the text prop out of it and then apply the desired join .

 const arr = [ {value: 1, text: 'one'}, {value: 2, text: 'two'}, {value: 3, text: 'three'}, {value: 4, text: 'four'} ]; const output = arr.map(el => el.text).join(', '); console.log(output);

Answer 2

找到了解决办法：

{{array.map(x =>  x.text).join(', ')}}