lodash 排序字符串数组的数组

Question

我有以下数据：

[["Balin Sankar","10","English","91.1408767700195"],
["Balin Sankar","10","Maths","88.1268997192383"],
["Balin Sankar","10","Science","90.3445739746094"],
["Balin Sankar","10","History","87.1235580444336"],
["Balin Sankar","10","Geography","88.2675628662109"],
["Balin Sankar","10","Civics","89.6238479614258"],
["Balin Sankar","10","Economics","86.5236434936523"]]

我需要根据第 4 个值对这些进行排序

Answer 1

你不需要 lodash。它可以通过常规 sort:

来实现

var array = [["Balin Sankar","10","English","91.1408767700195"],
["Balin Sankar","10","Maths","88.1268997192383"],
["Balin Sankar","10","Science","90.3445739746094"],
["Balin Sankar","10","History","87.1235580444336"],
["Balin Sankar","10","Geography","88.2675628662109"],
["Balin Sankar","10","Civics","89.6238479614258"],
["Balin Sankar","10","Economics","86.5236434936523"]];

array.sort(function(a, b) {
  return a[3] - b[3];
});

console.log(array);

Answer 2

您可以将 lodash 的 sortBy 函数传递给选择列表中第四项的函数：

var result = _.sortBy(data, item => parseFloat(item[3]))

var data = [["Balin Sankar","10","English","91.1408767700195"],
["Balin Sankar","10","Maths","88.1268997192383"],
["Balin Sankar","10","Science","90.3445739746094"],
["Balin Sankar","10","History","87.1235580444336"],
["Balin Sankar","10","Geography","88.2675628662109"],
["Balin Sankar","10","Civics","89.6238479614258"],
["Balin Sankar","10","Economics","86.5236434936523"]]

var result = _.sortBy(data, item => parseFloat(item[3]))

var output = document.getElementById('result')

_.each(result, item => output.textContent += (item[2] + ' ' + item[3] + '\n'))

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.14.2/lodash.js"></script>

<p>
  <pre id="result"></pre>
</p>

lodash 排序字符串数组的数组

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