angular怎么将markdown格式转换成html格式渲染在页面上

最近有个需求后端返回markdown格式的数据前端要进行渲染

查阅资料后具体操作步骤如下

参考链接

https://jfcere.github.io/ngx-markdown/cheat-sheet

安装 ngx-markdown

// 我这里项目时angular8的 所以也选择相对应的版本
npm i ngx-markdown@8.2.2 --save

在AppModule中引用

import { MarkdownModule } from 'ngx-markdown';

@NgModule({
  declarations: [
  ],
  imports: [
    MarkdownModule.forRoot()  // 需要加的
  ],
  providers: [
  ],
  bootstrap: [AppComponent],
})

3.在子module重复上一部操作

4.在html使用

<div class="markdown" markdown ngPreserveWhitespaces>
      # front-end-template

      This project was generated with [Angular CLI](https://github.com/angular/angular-cli) version 8.3.19.

      ## Development server

      Run `ng serve` for a dev server. Navigate to `http://localhost:4200/`. The app will automatically reload if you
      change any of the source files.

      ## Code scaffolding

      Run `ng generate component component-name` to generate a new component. You can also use `ng generate
      directive|pipe|service|class|guard|interface|enum|module`.

      ## Build

      Run `ng build` to build the project. The build artifacts will be stored in the `dist/` directory. Use the `--prod`
      flag for a production build.

      ## Running unit tests

      Run `ng test` to execute the unit tests via [Karma](https://karma-runner.github.io).


 </div>

5.注：这时候样式可能不大对，大家可以网上找样式贴上去，注意必须加ng-deep，否则不会生效

::ng-deep {

    h1,
    h2,
    h3,
    h4 {
      color: #111111;
      font-weight: 400;
      margin-top: 1em;
    }

    h1,
    h2,
    h3,
    h4,
    h5 {
      font-family: Georgia, Palatino, serif;
    }

    h1,
    h2,
    h3,
    h4,
    h5,
    p,
    dl {
      margin-bottom: 16px;
      padding: 0;
    }

    h1 {
      font-size: 48px;
      line-height: 54px;
    }

    h2 {
      font-size: 36px !important;
      line-height: 42px;
    }

    h1,
    h2 {
      border-bottom: 1px solid #EFEAEA;
      padding-bottom: 10px;
    }

    h3 {
      font-size: 24px;
      line-height: 30px;
    }

    h4 {
      font-size: 21px;
      line-height: 26px;
    }

    h5 {
      font-size: 18px;
      list-style: 23px;
    }

    a {
      color: #0099ff;
      margin: 0;
      padding: 0;
      vertical-align: baseline;
    }

    a:hover {
      text-decoration: none;
      color: #ff6600;
    }

    a:visited {}

    ul,
    ol {
      padding: 0;
      padding-left: 24px;
      margin: 0;
    }

    li {
      line-height: 24px;
    }

    p,
    ul,
    ol {
      font-size: 16px;
      line-height: 24px;
    }

    ol ol,
    ul ol {
      list-style-type: lower-roman;
    }



    code,
    pre {
      border-radius: 3px;
      background-color: #f7f7f7;
      color: inherit;
      color: red;
    }

    code {
      font-family: Consolas, Monaco, Andale Mono, monospace;
      margin: 0 2px;
    }

    pre {
      line-height: 1.7em;
      overflow: auto;
      padding: 6px 10px;
      border-left: 5px solid #6CE26C;
    }

    pre>code {
      border: 0;
      display: inline;
      max-width: initial;
      padding: 0;
      margin: 0;
      overflow: initial;
      line-height: inherit;
      font-size: .85em;
      white-space: pre;
      background: 0 0;

    }

    code {
      color: #666555;
    }





    aside {
      display: block;
      float: right;
      width: 390px;
    }

    blockquote {
      border-left: .5em solid #eee;
      padding: 0 0 0 2em;
      margin-left: 0;
    }

    blockquote cite {
      font-size: 14px;
      line-height: 20px;
      color: #bfbfbf;
    }

    blockquote cite:before {
      content: '\\2014 \\00A0';
    }

    blockquote p {
      color: #666;
    }

    hr {
      text-align: left;
      color: #999;
      height: 2px;
      padding: 0;
      margin: 16px 0;
      background-color: #e7e7e7;
      border: 0 none;
    }

    dl {
      padding: 0;
    }

    dl dt {
      padding: 10px 0;
      margin-top: 16px;
      font-size: 1em;
      font-style: italic;
      font-weight: bold;
    }

    dl dd {
      padding: 0 16px;
      margin-bottom: 16px;
    }

    dd {
      margin-left: 0;
    }



    button,
    input,
    select,
    textarea {
      font-size: 100%;
      margin: 0;
      vertical-align: baseline;
      *vertical-align: middle;
    }

    button,
    input {
      line-height: normal;
      *overflow: visible;
    }

    button::-moz-focus-inner,
    input::-moz-focus-inner {
      border: 0;
      padding: 0;
    }

    button,
    input[type="button"],
    input[type="reset"],
    input[type="submit"] {
      cursor: pointer;
      -webkit-appearance: button;
    }

    input[type=checkbox],
    input[type=radio] {
      cursor: pointer;
    }

    input:not([type="image"]),
    textarea {
      -webkit-box-sizing: content-box;
      -moz-box-sizing: content-box;
      box-sizing: content-box;
    }

    input[type="search"] {
      -webkit-appearance: textfield;
      -webkit-box-sizing: content-box;
      -moz-box-sizing: content-box;
      box-sizing: content-box;
    }

    input[type="search"]::-webkit-search-decoration {
      -webkit-appearance: none;
    }

    label,
    input,
    select,
    textarea {
      font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
      font-size: 13px;
      font-weight: normal;
      line-height: normal;
      margin-bottom: 18px;
    }

    input[type=checkbox],
    input[type=radio] {
      cursor: pointer;
      margin-bottom: 0;
    }

    input[type=text],
    input[type=password],
    textarea,
    select {
      display: inline-block;
      width: 210px;
      padding: 4px;
      font-size: 13px;
      font-weight: normal;
      line-height: 18px;
      height: 18px;
      color: #808080;
      border: 1px solid #ccc;
      -webkit-border-radius: 3px;
      -moz-border-radius: 3px;
      border-radius: 3px;
    }

    select,
    input[type=file] {
      height: 27px;
      line-height: 27px;
    }

    textarea {
      height: auto;
    }

    :-moz-placeholder {
      color: #bfbfbf;
    }

    ::-webkit-input-placeholder {
      color: #bfbfbf;
    }

    input[type=text],
    input[type=password],
    select,
    textarea {
      -webkit-transition: border linear 0.2s, box-shadow linear 0.2s;
      -moz-transition: border linear 0.2s, box-shadow linear 0.2s;
      transition: border linear 0.2s, box-shadow linear 0.2s;
      -webkit-box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
      -moz-box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
      box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
    }

    input[type=text]:focus,
    input[type=password]:focus,
    textarea:focus {
      outline: none;
      border-color: rgba(82, 168, 236, 0.8);
      -webkit-box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1), 0 0 8px rgba(82, 168, 236, 0.6);
      -moz-box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1), 0 0 8px rgba(82, 168, 236, 0.6);
      box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1), 0 0 8px rgba(82, 168, 236, 0.6);
    }

    button {
      display: inline-block;
      padding: 4px 14px;
      font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
      font-size: 13px;
      line-height: 18px;
      -webkit-border-radius: 4px;
      -moz-border-radius: 4px;
      border-radius: 4px;
      -webkit-box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
      -moz-box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
      box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
      background-color: #0064cd;
      background-repeat: repeat-x;
      background-image: -khtml-gradient(linear, left top, left bottom, from(#049cdb), to(#0064cd));
      background-image: -moz-linear-gradient(top, #049cdb, #0064cd);
      background-image: -ms-linear-gradient(top, #049cdb, #0064cd);
      background-image: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #049cdb), color-stop(100%, #0064cd));
      background-image: -webkit-linear-gradient(top, #049cdb, #0064cd);
      background-image: -o-linear-gradient(top, #049cdb, #0064cd);
      background-image: linear-gradient(top, #049cdb, #0064cd);
      color: #fff;
      text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.25);
      border: 1px solid #004b9a;
      border-bottom-color: #003f81;
      -webkit-transition: 0.1s linear all;
      -moz-transition: 0.1s linear all;
      transition: 0.1s linear all;
      border-color: #0064cd #0064cd #003f81;
      border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
    }

    button:hover {
      color: #fff;
      background-position: 0 -15px;
      text-decoration: none;
    }

    button:active {
      -webkit-box-shadow: inset 0 3px 7px rgba(0, 0, 0, 0.15), 0 1px 2px rgba(0, 0, 0, 0.05);
      -moz-box-shadow: inset 0 3px 7px rgba(0, 0, 0, 0.15), 0 1px 2px rgba(0, 0, 0, 0.05);
      box-shadow: inset 0 3px 7px rgba(0, 0, 0, 0.15), 0 1px 2px rgba(0, 0, 0, 0.05);
    }

    button::-moz-focus-inner {
      padding: 0;
      border: 0;
    }

    table {
      *border-collapse: collapse;
      border-spacing: 0;
      width: 100%;
    }

    table {
      border: solid #ccc 1px;
      -moz-border-radius: 6px;
      -webkit-border-radius: 6px;
      border-radius: 6px;

    }

    table tr:hover {
      background: #fbf8e9;
      -o-transition: all 0.1s ease-in-out;
      -webkit-transition: all 0.1s ease-in-out;
      -moz-transition: all 0.1s ease-in-out;
      -ms-transition: all 0.1s ease-in-out;
      transition: all 0.1s ease-in-out;
    }

    table td,
    .table th {
      border-left: 1px solid #ccc;
      border-top: 1px solid #ccc;
      padding: 10px;
      text-align: left;
    }

    table th {
      background-color: #dce9f9;
      background-image: -webkit-gradient(linear, left top, left bottom, from(#ebf3fc), to(#dce9f9));
      background-image: -webkit-linear-gradient(top, #ebf3fc, #dce9f9);
      background-image: -moz-linear-gradient(top, #ebf3fc, #dce9f9);
      background-image: -ms-linear-gradient(top, #ebf3fc, #dce9f9);
      background-image: -o-linear-gradient(top, #ebf3fc, #dce9f9);
      background-image: linear-gradient(top, #ebf3fc, #dce9f9);

      border-top: none;
      text-shadow: 0 1px 0 rgba(255, 255, 255, .5);
      padding: 5px;
    }

    table td:first-child,
    table th:first-child {
      border-left: none;
    }

    table th:first-child {
      -moz-border-radius: 6px 0 0 0;
      -webkit-border-radius: 6px 0 0 0;
      border-radius: 6px 0 0 0;
    }

    table th:last-child {
      -moz-border-radius: 0 6px 0 0;
      -webkit-border-radius: 0 6px 0 0;
      border-radius: 0 6px 0 0;
    }

    table th:only-child {
      -moz-border-radius: 6px 6px 0 0;
      -webkit-border-radius: 6px 6px 0 0;
      border-radius: 6px 6px 0 0;
    }

    table tr:last-child td:first-child {
      -moz-border-radius: 0 0 0 6px;
      -webkit-border-radius: 0 0 0 6px;
      border-radius: 0 0 0 6px;
    }

    table tr:last-child td:last-child {
      -moz-border-radius: 0 0 6px 0;
      -webkit-border-radius: 0 0 6px 0;
      border-radius: 0 0 6px 0;
    }
  }

6.效果如下

原文链接：https://blog.csdn.net/qq_36487294/article/details/106833202

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