发布于  更新于 

为你的Jekyll博客添加搜索文章功能

Jekyll 教程

众所周知,Github上的Jekyll上实现自定义插件很困难,因此即使有Jekyll的搜索插件,也只能手写js代码。静态网站实现搜索原理是这样的,通过HTTP请求获取posts.json,然后本地解析里面内容实现搜索。

posts.json

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
---
layout: null
permalink: /posts.json
---

{
"posts":[
{%- for post in site.posts -%}
{
"title" : "{{ post.title }}",
"date" : "{{ post.date | date_to_long_string }}",
"author" : "{{ post.author }}",
"tags" : [
{%- for tag in post.tags -%}
"{{ tag }}"
{%- if forloop.rindex != 1 -%}
,
{%- endif -%}
{%- endfor -%}
],
"url" : "{{ post.url }}",
"excerpt" : "{{ post.excerpt | strip_html | strip_newlines | lstrip | rstrip | truncate:100 }}"
}
{%- if forloop.rindex != 1 -%}
,
{%- endif -%}
{%- endfor -%}
]
}

HTTP请求

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
let requestURL = '/posts.json';
let request = new XMLHttpRequest();
request.open('GET', requestURL);
request.responseType = 'text';
request.send();

var posts;
let section = null;

request.onload = function () {
let postsText = request.response;
posts = JSON.parse(postsText);
//console.log(postsText);
initPosts(posts['posts']);
};

显示搜索框

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
function initSearchBox() {
var box = document.createElement('input');
box.setAttribute('type', 'text');
box.setAttribute('id', 'search-box');
box.setAttribute('placeholder', '搜索文章...');
box.oninput = function () {
var text = this.value;
if (text != "") {
var list = [];
postList.forEach(post => {
if (post.title.search(text) > -1 || post.excerpt.search(text) > -1) {
list.push(post);
}
});
showSelectedPost(list);
} else {
showAllPost();
}
}

document.getElementById('nav-ul').appendChild(box);
}

滚动到底自动加载

1
2
3
4
5
6
7
8
9
$(window).scroll(function () {
var htmlHeight = $(document).height();
var clientHeight = $(window).height();
var scrollTop = $(document).scrollTop();
var he = scrollTop + clientHeight;
if (he >= htmlHeight * 0.9) {
addListMore();
}
});

这样做就可以在不花钱的情况下,实现一个支持在线编辑的,支持自定义域名的,功能齐全的博客。