如何在数组中搜索单词？

Question

如何在数组myArray中的title中包含单词“ wish ”的所有元素中查找。为此，我想使用 Lodash 或香草 JavaScript 。

const myArray = [
    {
        id:1,
        category:"HappyBirthday",
        title:"Best wishes"
    },      
    {
        id:2,
        category:"HappyBirthday",
        title:"Happy Birthday"
    },      
    {
        id:3,
        category:"TopPerformer",
        title:"Good job - Girl"
    },
    {
        id:4,
        category:"TopPerformer",
        title:"Wish you continued success"
    },
    {
        id:5,
        category:"WorkAnniversary",
        title:"Happy work anniversary"
    }
];

预期结果：

const searchResults = [
    {
        id:1,
        category:"HappyBirthday",
        title:"Best wishes"
    },                  
    {
        id:4,
        category:"TopPerformer",
        title:"Wish you continued success"
    }           
];

Answer 1

const myArray = [
    {
        id:1,
        category:"HappyBirthday",
        title:"Best wishes"
    },      
    {
        id:2,
        category:"HappyBirthday",
        title:"Happy Birthday"
    },      
    {
        id:3,
        category:"TopPerformer",
        title:"Good job - Girl"
    },
    {
        id:4,
        category:"TopPerformer",
        title:"Wish you continued success"
    },
    {
        id:5,
        category:"WorkAnniversary",
        title:"Happy work anniversary"
    }
];

const filtered = myArray.filter(obj => obj.title.toLowerCase().includes("wish"));

console.log(filtered);

或者您可以简单地做到这一点：

myArray.filter(item => item.title.match(/wish/i));

在这里，我正在使用正则表达式并检查标题是否包含单词wish。 i告诉引擎忽略大小写。

Answer 2

您可以为此使用正则表达式。

const retval = myArray.filter(x => x.title.match(/wish/i));

重要

如果要跳过过滤器中的区分大小写，那么将其包括进来真的很重要

/i

Answer 3

带有Array.prototype.filter的简单RegExp.prototype.test应该可以完成这项工作：

const myArray=[{id:1,category:"HappyBirthday",title:"Best wishes"},{id:2,category:"HappyBirthday",title:"Happy Birthday"},{id:3,category:"TopPerformer",title:"Good job - Girl"},{id:4,category:"TopPerformer",title:"Wish you continued success"},{id:5,category:"WorkAnniversary",title:"Happy work anniversary"}]

const filtered = myArray.filter(({title}) => /wish/gi.test(title));

console.log(filtered);