hastToHtml()
将 HAST 根节点序列化为 HTML 字符串。
import { hastToHtml } from "@unifast/core";签名
function hastToHtml(hast: HastRoot): string参数
hast
| 属性 | 类型 | 默认值 | 描述 |
|---|---|---|---|
type | "root" | — | 节点类型标识 |
children | HastNode[] | — | 树的子节点 |
返回值
string —— 序列化后的 HTML 字符串。
用法
import { hastToHtml } from "@unifast/core";
import type { HastRoot } from "@unifast/core";
const hast: HastRoot = {
type: "root",
children: [
{
type: "element",
tagName: "h1",
properties: { id: "hello", className: ["title", "main"] },
children: [
{ type: "text", value: "Hello " },
{
type: "element",
tagName: "strong",
properties: {},
children: [{ type: "text", value: "world" }],
},
],
},
],
};
const html = hastToHtml(hast);
console.log(html);
// <h1 class="title main" id="hello">Hello <strong>world</strong></h1>示例
基础序列化
import { hastToHtml } from "@unifast/core";
import type { HastRoot } from "@unifast/core";
const hast: HastRoot = {
type: "root",
children: [
{
type: "element",
tagName: "p",
properties: {},
children: [
{ type: "text", value: "This is " },
{
type: "element",
tagName: "strong",
properties: {},
children: [{ type: "text", value: "bold" }],
},
{ type: "text", value: " text." },
],
},
],
};
console.log(hastToHtml(hast));
// <p>This is <strong>bold</strong> text.</p>空元素
空元素(<br>、<img>、<hr> 等)会自动以自闭合形式输出:
import { hastToHtml } from "@unifast/core";
import type { HastRoot } from "@unifast/core";
const hast: HastRoot = {
type: "root",
children: [
{
type: "element",
tagName: "img",
properties: { src: "photo.jpg", alt: "A photo" },
children: [],
},
],
};
console.log(hastToHtml(hast));
// <img alt="A photo" src="photo.jpg" />配合 compile() 输出使用
import { compile } from "@unifast/node";
import { hastToHtml } from "@unifast/core";
import type { HastRoot } from "@unifast/core";
const result = compile("**bold text**", { outputKind: "hast" });
const hast: HastRoot = JSON.parse(result.output as string);
console.log(hastToHtml(hast));
// <p><strong>bold text</strong></p>原始 HTML 透传
import { hastToHtml } from "@unifast/core";
import type { HastRoot } from "@unifast/core";
const hast: HastRoot = {
type: "root",
children: [
{ type: "raw", value: "<div class=\"custom\">Raw HTML</div>" },
],
};
console.log(hastToHtml(hast));
// <div class="custom">Raw HTML</div>行为说明
HTML 转义: 文本内容会被转义(
&、<、>、")空元素:
area、base、br、col、embed、hr、img、input、link、meta、param、source、track、wbr会以自闭合形式输出属性: 按字母顺序排序;
className数组会用空格拼接并以class属性渲染;布尔true渲染为不带值的属性;false/null/undefined会被省略注释: 渲染为
<!--value-->Doctype: 渲染为
<!DOCTYPE html>Raw 节点: 原样输出,不进行转义