按关键字搜索答案

【问题标题】：Search by Keywords按关键字搜索
【发布时间】：2019-12-13 04:16:53
【问题描述】：

我是一名自学成才的程序员，目前正在从事一个工作列表网站项目。我有一个带有搜索功能的工作列表页面。现在，用户可以按职位搜索，我想添加按关键字搜索的选项。

HTML

每个职位有 6 个属性：职位名称、职位位置、职位类型、职位行业和职位关键字。 job-keyword 是一个列表，因为作业可以有不同数量的关键字。

<div class="job-listing">
    <div class="container">
            <div class="job-number">
                <h2>We Found <span id="number-jobs-total" class="text-secondary">214</span> Offers For <span>You</span> </h2>
            </div>
            <ul class="job-board">
                <li class="job job-1">
                    <div class="job-title">
                        <h2>Process Engineer</h2>
                    </div>
                    <div class="job-location">
                        <p>Location: Naypyitaw</p>
                    </div>
                    <div class="job-type">
                        <p>Type: Full-Time</p>
                    </div>
                    <div class="job-date">
                        <p>Published on 07/19/2019</p>
                    </div>
                    <div class="job-industry">
                        <p>Engineering</p>
                    </div>
                    <ul class="job-keywords">
                        <li>Engineering</li>
                        <li>Science</li>
                    </ul>
                </li>
                <li class="job job-2">
                        <div class="job-title">
                            <h2>Chief Financial Officier</h2>
                        </div>
                        <div class="job-location">
                            <p>Location: Naypyitaw</p>
                        </div>
                        <div class="job-type">
                                <p>Type: Full-Time</p>
                        </div>
                        <div class="job-date">
                                <p>Published on 07/18/2019</p>
                        </div>
                    </li>
                    <li class="job job-3">
                            <div class="job-title">
                                <h2>Assistant CEO</h2>
                            </div>
                            <div class="job-location">
                                <p>Location: Naypyitaw</p>
                            </div>
                            <div class="job-type">
                                    <p>Type: Part-Time</p>
                            </div>
                            <div class="job-date">
                                    <p>Published on 07/18/2019</p>
                            </div>
                        </li>
                        <li class="job job-4">
                                <div class="job-title">
                                    <h2>Front-End Developer</h2>
                                </div>
                                <div class="job-location">
                                    <p>Location: Naypyitaw</p>
                                </div>
                                <div class="job-type">
                                        <p>Type: Part-Time</p>
                                </div>
                                <div class="job-date">
                                        <p>Published on 07/18/2019</p>
                                </div>
                            </li>          
            </ul>
            <nav class="pagination-container">
                <ul class="pagination">
                    <li><a href="javascript:void(0)">Previous</a></li>
                    <li><a href="javascript:void(0)">Next</a></li>

                </ul>
            </nav>
    </div>
</div>

用于按标题搜索的 JS：

const search= document.querySelector(".skills");
const jobs = Array.from(document.querySelector(".job-board").children);

const filterJobs = term => {
    jobs.filter(job =>{
        const title = job.querySelector(".job-title").textContent.toLowerCase();

        if(title.includes(term.toLowerCase()) || totalKeywords.includes(term.toLowerCase()) ){
            job.style.display = "list-item";
        } else{
            job.style.display = "none";
        }
    });
};

search.addEventListener("keyup", e =>{
    filterJobs(e.currentTarget.value.trim());
});

JS：我已经尝试过，我认为我并没有很远，但仍然没有工作

const search= document.querySelector(".skills");
const jobs = Array.from(document.querySelector(".job-board").children);

const filterJobs = term => {
    jobs.filter(job =>{
        const title = job.querySelector(".job-title").textContent.toLowerCase();
        const keyword = job.querySelectorAll(".job-keywords li");
        totalKeywords = [];
        for(var i = 0 ; i < keyword.length ; i++){
            totalKeywords.push(keyword[i].textContent);
        }
        console.log(totalKeywords);

        if(title.includes(term.toLowerCase()) || totalKeywords.includes(term.toLowerCase()) ){
            job.style.display = "list-item";
        } else{
            job.style.display = "none";
        }
    });
};

search.addEventListener("keyup", e =>{
    filterJobs(e.currentTarget.value.trim());
});

【问题讨论】：

您好！你能给我们更多的问题细节吗？什么都没有发生或行为不是您想要的？
您能给我们举一个术语/关键字不起作用的例子吗？问题可能只是您在for 循环中忘记了.toLowerCase()，但也可能是includes 没有按预期运行。

标签： javascript

【解决方案1】：

我认为你的代码的问题是关键字不是字符串而是字符串数组，所以你需要做的是在关键字数组中搜索，即

 let inKeywords = totalKeywords.some(keyword => keyword.toLowerCase().includes(term.toLowerCase()));
 if(title.includes(term.toLowerCase()) || inKeywords ){
        job.style.display = "list-item";
    } else{
        job.style.display = "none";
    }

【讨论】：

谢谢爱麦，刚刚测试了，可以了！谢谢！

【解决方案2】：

我建议你不要使用includes，而是更喜欢indexOf。您可以找到更多信息here

const search = document.querySelector('.skills');
const jobs = Array.from(document.querySelector('.job-board').children);

const filterJobs = term => {
  jobs.filter(job => {
    const title = job.querySelector('.job-title').textContent.toLowerCase();
    const keyword = job.querySelectorAll('.job-keywords li');
    const totalKeywords = [];
    for (var i = 0; i < keyword.length; i++) {
      totalKeywords.push(keyword[i].textContent);
    }
    console.log(totalKeywords);

    if (title.includes(term.toLowerCase()) || totalKeywords.indexOf(term.toLowerCase()) > -1) {
      job.style.display = 'list-item';
    } else {
      job.style.display = 'none';
    }
  });
};

search.addEventListener('keyup', e => {
  filterJobs(e.currentTarget.value.trim());
});

【讨论】：

嗨马丁，我读了这篇文章，我需要更多的练习，因为我很难理解如何以及何时应用 indexOf 方法。

【解决方案3】：

对于这种前端过滤，这是一个很好的技巧。我不知道这是否是您想要的，因为这不是 OP 所要求的，但这会在您的所有字段（标题、位置、类型、日期、行业、关键字）中进行搜索：

    const search= document.querySelector(".skills");
    const jobs = Array.from(document.querySelector(".job-board").children);
    const filterJobs = term => {
        jobs.filter(job =>{
            jobText = job.textContent || job.innerText || ""; // strip html tags from the job element and keeps only text
            jobText = jobText.toLowerCase();
            if(jobText.indexOf(term.toLowerCase()) > -1){
                job.style.display = "list-item";
            }
            else{
                job.style.display = "none";
            }
        });
    };
    search.addEventListener("keyup", e =>{
        filterJobs(e.currentTarget.value.trim());
    });

<input type="text" class="skills" placeholder="search">

<div class="job-listing">
    <div class="container">
            <div class="job-number">
                <h2>We Found <span id="number-jobs-total" class="text-secondary">214</span> Offers For <span>You</span> </h2>
            </div>
            <ul class="job-board">
                <li class="job job-1">
                    <div class="job-title">
                        <h2>Process Engineer</h2>
                    </div>
                    <div class="job-location">
                        <p>Location: Naypyitaw</p>
                    </div>
                    <div class="job-type">
                        <p>Type: Full-Time</p>
                    </div>
                    <div class="job-date">
                        <p>Published on 07/19/2019</p>
                    </div>
                    <div class="job-industry">
                        <p>Engineering</p>
                    </div>
                    <ul class="job-keywords">
                        <li>Engineering</li>
                        <li>Science</li>
                    </ul>
                </li>
                <li class="job job-2">
                        <div class="job-title">
                            <h2>Chief Financial Officier</h2>
                        </div>
                        <div class="job-location">
                            <p>Location: Naypyitaw</p>
                        </div>
                        <div class="job-type">
                                <p>Type: Full-Time</p>
                        </div>
                        <div class="job-date">
                                <p>Published on 07/18/2019</p>
                        </div>
                    </li>
                    <li class="job job-3">
                            <div class="job-title">
                                <h2>Assistant CEO</h2>
                            </div>
                            <div class="job-location">
                                <p>Location: Naypyitaw</p>
                            </div>
                            <div class="job-type">
                                    <p>Type: Part-Time</p>
                            </div>
                            <div class="job-date">
                                    <p>Published on 07/18/2019</p>
                            </div>
                        </li>
                        <li class="job job-4">
                                <div class="job-title">
                                    <h2>Front-End Developer</h2>
                                </div>
                                <div class="job-location">
                                    <p>Location: Naypyitaw</p>
                                </div>
                                <div class="job-type">
                                        <p>Type: Part-Time</p>
                                </div>
                                <div class="job-date">
                                        <p>Published on 07/18/2019</p>
                                </div>
                            </li>          
            </ul>
            <nav class="pagination-container">
                <ul class="pagination">
                    <li><a href="javascript:void(0)">Previous</a></li>
                    <li><a href="javascript:void(0)">Next</a></li>

                </ul>
            </nav>
    </div>
</div>

【讨论】：

向弗朗索瓦致敬，再次感谢！实际上，我确实有另一个搜索栏，即“位置”，所以我将使用您的部分代码作为第二个搜索栏。我只是想知道，现在为搜索栏实施自动建议会有多困难？就像您输入“sal”一样，自动建议将是“销售”。谢谢！