Introduction

This library enable to check html tag whether html is missed opening or closing tags by TypeScript

Installation

You can use this from Node.js or JavaScript whatever.

npm install html-tag-check # npm
yarn add html-tag-check # yarn
pnpm add html-tag-check # pnpm

How to use

import { htmlTagCheck } from "html-tag-check";

const HTML = "<div><p>Opening div tag isn't necessary!!</p>";
htmlTagCheck(HTML);
// => { type: "invalid_extra_opening_tag", detail: { type: "opening", tag: "<div>", index: 0 } }

Arguments

Name	Type	Required	Description
html	string	true	html you want to check
options	object	false	the options of checker

options

Name	Type	Required	Description
trimHtml	boolean	false	remove new lines and white spaces from html string
ignoreTagNames	string[]	false	tag names you want to ignore check. e.g. ["size","template"]

Return

Valid

{
  type: "valid";
}

Invalid

extra closing tag error

{
  type: "invalid_extra_closing_tag";
  detail: [
    {
      type: "closing"; // closing tag error
      tag: string; // tag name like </div>
      index: number; // tag index number from html string.
    }
  ];
}

mismatch opening and closing tag error

{
  type: "invalid_mismatch_opening_and_closing_tag";
  detail: [
    {
      type: "opening";
      tag: string;
      index: number;
    },
    {
      type: "closing";
      tag: string;
      index: number;
    }
  ];
}

extra opening tag error

{
  type: "invalid_extra_opening_tag";
  detail: [
    {
      type: "opening";
      tag: string;
      index: number;
    }
  ];
};