Given a list of strings, implement a function listFormat that returns the items concatenated into a single string. A common use case would be in summarizing the reactions for social media posts.
The function should support a few options as the second parameter:
sorted: Sorts the items by alphabetical order.length: Show only the first length items, using "and X other(s)" for the remaining. Ignore invalid values (negative, 0, etc).unique: Remove duplicate items.listFormat([]); // ''listFormat(['Bob']); // 'Bob'listFormat(['Bob', 'Alice']); // 'Bob and Alice'listFormat(['Bob', 'Ben', 'Tim', 'Jane', 'John']);// 'Bob, Ben, Tim, Jane and John'listFormat(['Bob', 'Ben', 'Tim', 'Jane', 'John'], {length: 3,}); // 'Bob, Ben, Tim and 2 others'listFormat(['Bob', 'Ben', 'Tim', 'Jane', 'John'], {length: 4,}); // 'Bob, Ben, Tim, Jane and 1 other'listFormat(['Bob', 'Ben', 'Tim', 'Jane', 'John'], {length: 3,sorted: true,}); // 'Ben, Bob, Jane and 2 others'listFormat(['Bob', 'Ben', 'Tim', 'Jane', 'John', 'Bob'], {length: 3,unique: true,}); // 'Bob, Ben, Tim and 2 others'listFormat(['Bob', 'Ben', 'Tim', 'Jane', 'John'], {length: 3,unique: true,}); // 'Bob, Ben, Tim and 2 others'listFormat(['Bob', 'Ben', '', '', 'John']); // 'Bob, Ben and John'
Given a list of strings, implement a function listFormat that returns the items concatenated into a single string. A common use case would be in summarizing the reactions for social media posts.
The function should support a few options as the second parameter:
sorted: Sorts the items by alphabetical order.length: Show only the first length items, using "and X other(s)" for the remaining. Ignore invalid values (negative, 0, etc).unique: Remove duplicate items.listFormat([]); // ''listFormat(['Bob']); // 'Bob'listFormat(['Bob', 'Alice']); // 'Bob and Alice'listFormat(['Bob', 'Ben', 'Tim', 'Jane', 'John']);// 'Bob, Ben, Tim, Jane and John'listFormat(['Bob', 'Ben', 'Tim', 'Jane', 'John'], {length: 3,}); // 'Bob, Ben, Tim and 2 others'listFormat(['Bob', 'Ben', 'Tim', 'Jane', 'John'], {length: 4,}); // 'Bob, Ben, Tim, Jane and 1 other'listFormat(['Bob', 'Ben', 'Tim', 'Jane', 'John'], {length: 3,sorted: true,}); // 'Ben, Bob, Jane and 2 others'listFormat(['Bob', 'Ben', 'Tim', 'Jane', 'John', 'Bob'], {length: 3,unique: true,}); // 'Bob, Ben, Tim and 2 others'listFormat(['Bob', 'Ben', 'Tim', 'Jane', 'John'], {length: 3,unique: true,}); // 'Bob, Ben, Tim and 2 others'listFormat(['Bob', 'Ben', '', '', 'John']); // 'Bob, Ben and John'
console.log() 语句将显示在此处。