我有一系列对象,例如
[{ "name": "Jen", "age":31, "eyecolor": "blue", "hair":"brown"},
{ "name": "Jen", "age":32, "eyecolor": "green", "hair":"blonde"},
{ "name": "Jules", "age":31, "eyecolor": "blue", "hair":"brown"}, ,
{ "name": "Brian", "age":40, "eyecolor": "blue", "hair":"brown"}]
我需要一个 lodash 表达式,它会产生一组基于一个属性的唯一对象。例如,如果我使用名称,它会给我这三个:
[{ "name": "Jen", "age":31, "eyecolor": "blue", "hair":"brown"},
{ "name": "Jules", "age":31, "eyecolor": "blue", "hair":"brown"},
{ "name": "Brian", "age":40, "eyecolor": "blue", "hair":"brown"}]
最佳答案
对于 Lodash 版本 4+,请使用 _.uniqBy()
:
var arr = [{"name":"Jen","age":31,"eyecolor":"blue","hair":"brown"},{"name":"Jen","age":32,"eyecolor":"green","hair":"blonde"},{"name":"Jules","age":31,"eyecolor":"blue","hair":"brown"},{"name":"Brian","age":40,"eyecolor":"blue","hair":"brown"}];
var unique = _.uniqBy(arr, 'name');
console.log(unique);
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.4/lodash.js"></script>
对于 4 以下的 Lodash 版本,请使用
_.uniq()
:var arr = [{"name":"Jen","age":31,"eyecolor":"blue","hair":"brown"},{"name":"Jen","age":32,"eyecolor":"green","hair":"blonde"},{"name":"Jules","age":31,"eyecolor":"blue","hair":"brown"},{"name":"Brian","age":40,"eyecolor":"blue","hair":"brown"}];
var unique = _.uniq(arr, 'name');
console.log(unique);
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.10.1/lodash.js"></script>
关于javascript - lodash 基于属性的唯一性,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/33790019/