javascript - 检查数组中是否存在某个项目

Question

我需要检查主数组中是否存在特定值。

Example:

var hideFilters = function() {
    var listCategoryId = ['1000014', '1000015', '1000016', '1000017', '1000018', '1000019', '1000021', '1000086'];

    var actualCategoryId = '1000018';

    if (actualCategoryId === listCategoryId) {
        console.log('is equal');
    } else {
        console.log('fuen... fuen...');
    }
};

hideFilters();

Answer 1

if(listCategoryId.indexOf(actualCategoryId) != -1) {
  console.log('exists')
}