javascript - Lodash查找并显示呈现的json数据

在下面的代码中，“答案”键存在于第二和第四对象中，但是当我运行代码时，我只是得到第二个对象作为输出。

预期输出是需要显示“答案”的对象

    var users = [{
	"answerLength": "10",
	"isComment": "false",
	"question": "what?",
	"uniqueId": "01"
}, {
	"answerLength": "10",
	"isComment": "false",
	"question": "what?",
	"uniqueId": "aaa",
  "answer": "02"
}, {
	"answerLength": "10",
	"isComment": "false",
	"question": "what?",
	"uniqueId": "03"
}, {
	"answerLength": "10",
	"isComment": "false",
	"question": "what?",
	"uniqueId": "aaa",
  "answer": "04"
}];

function checkAnsExist(){
    var forEach = _.find(users, _.forEach(function(i){ return i.answer}));
    document.write(JSON.stringify(forEach));
}
checkAnsExist();

<script src="https://cdn.jsdelivr.net/lodash/4.17.4/lodash.core.min.js"></script>

最佳答案

您要查找的是filter，而不是find

    var users = [{
	"answerLength": "10",
	"isComment": "false",
	"question": "what?",
	"uniqueId": "01"
}, {
	"answerLength": "10",
	"isComment": "false",
	"question": "what?",
	"uniqueId": "aaa",
  "answer": "02"
}, {
	"answerLength": "10",
	"isComment": "false",
	"question": "what?",
	"uniqueId": "03"
}, {
	"answerLength": "10",
	"isComment": "false",
	"question": "what?",
	"uniqueId": "aaa",
  "answer": "04"
}];

function checkAnsExist(){
    var forEach = _.filter(users, 'answer');
    document.write(JSON.stringify(forEach));
}
checkAnsExist();

<script src="https://cdn.jsdelivr.net/lodash/4.17.4/lodash.core.min.js"></script>

关于javascript - Lodash查找并显示呈现的json数据，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/42597963/