<p>我有一个对象数组和一个普通数组，如果对象数组中的项等于普通数组中的项，我想要移除它。对我来说这很困惑。</p> <p>以下是我目前尝试过的：</p> <p> <pre class="snippet-code-js lang-js prettyprint-override"><code>var countries = [ {ChoicesID: 1, ChoicesName : 'afghanistan'}, {ChoicesID: 2, ChoicesName : 'albania'}, {ChoicesID: 3, ChoicesName : 'algeria'}, {ChoicesID: 4, ChoicesName : 'angola'}, {ChoicesID: 5, ChoicesName : 'argentina'}, {ChoicesID: 6, ChoicesName : 'armenia'} ]; var answer = ['afghanistan','albania','algeria']; var ChoicesName = new Set(countries.map(d => d.ChoicesName)); var NewCountries = [...ChoicesName, ...answer.filter(d => !ChoicesName.has(countries.find(o => o.ChoicesName === answer)))]; console.log(NewCountries );</code></pre> </p> <p>预期输出应该是这样的：</p> <pre class="brush:php;toolbar:false;">var NewCountries = [ {ChoicesID: 4, ChoicesName : 'angola'}, {ChoicesID: 5, ChoicesName : 'argentina'}, {ChoicesID: 6, ChoicesName : 'armenia'} ];</pre></p>

var countries = 
[
{ChoicesID: 1, ChoicesName : '阿富汗'},
{ChoicesID: 2, ChoicesName : '阿尔巴尼亚'},
{ChoicesID: 3, ChoicesName : '阿尔及利亚'},
{ChoicesID: 4, ChoicesName : '安哥拉'},
{ChoicesID: 5, ChoicesName : '阿根廷'},
{ChoicesID: 6, ChoicesName : '亚美尼亚'}
];

var answer = ['阿富汗','阿尔巴尼亚','阿尔及利亚'];

var NewCountries = countries.filter(o => !answer.includes(o.ChoicesName))

console.log(NewCountries)

var countries = [{ChoicesID: 1, ChoicesName : 'afghanistan'},{ChoicesID: 2, ChoicesName : 'albania'},{ChoicesID: 3, ChoicesName : 'algeria'},{ChoicesID: 4, ChoicesName : 'angola'},{ChoicesID: 5, ChoicesName : 'argentina'},{ChoicesID: 6, ChoicesName : 'armenia'}];
var answer = ['afghanistan','albania','algeria'];

const answerSet = new Set(answer)

const newCountries = countries.filter(c => !answerSet.has(c.ChoicesName))

console.log(newCountries)