替换数组中的已加工元素，Lodash

Question

function replaceById(requests, request) {
    requests.splice(_.indexOf(requests, _.find(requests, {id: request.id})), 1, request);
}

Lodash（或其他实用程序库）是否提供了任何方法来简化对数组requests特定元素request替换，例如

function(r) { return _.eq(r.id, request.id); }

或身份对象，如

{id: request.id}

Answer 1

您可以使用findIndex ：

function replaceById(requests, request) {
  var index = _.findIndex(requests, function(r) { 
    return r.id === request.id 
  });
  requests.splice(index, 1, request);
}

 function replaceById(requests, request) { var index = _.findIndex(requests, function(r) { return r.id === request.id }); requests.splice(index, 1, request); } var requests = [{id: 1, msg: 'cool'}, {id: 2, msg: 'wow'}]; replaceById(requests, {id: 2, msg: 'stuff'}); console.log(requests);

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