284 lines
9.4 KiB
Plaintext
284 lines
9.4 KiB
Plaintext
---
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title: Standalone Browser Scripts
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pagination_prev: getting-started/index
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pagination_next: getting-started/examples/index
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sidebar_position: 1
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sidebar_custom_props:
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summary: Classic pages with simple <script> tags
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---
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import current from '/version.js';
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import CodeBlock from '@theme/CodeBlock';
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Each standalone release script is available at https://cdn.sheetjs.com/.
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<p>The current version is {current} and can be referenced as follows:</p>
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<CodeBlock language="html">{`\
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<!-- use version ${current} -->
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<script lang="javascript" src="https://cdn.sheetjs.com/xlsx-${current}/package/dist/xlsx.full.min.js"></script>`}
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</CodeBlock>
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:::tip pass
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[Watch the repo](https://git.sheetjs.com/SheetJS/sheetjs) or subscribe to the
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[RSS feed](https://git.sheetjs.com/sheetjs/sheetjs/tags.rss) to be notified when
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new versions are released!
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:::
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:::danger pass
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A number of services host older versions of the SheetJS libraries. Due to
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syncing issues, they are generally out of date.
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**The SheetJS CDN** https://cdn.sheetjs.com/ **is the authoritative source**
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**for SheetJS scripts**
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:::
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## Browser Scripts
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`xlsx.full.min.js` is the complete standalone script. It includes support for
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reading and writing many spreadsheet formats.
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<CodeBlock language="html">{`\
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<!-- use xlsx.full.min.js from version ${current} -->
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<script lang="javascript" src="https://cdn.sheetjs.com/xlsx-${current}/package/dist/xlsx.full.min.js"></script>`}
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</CodeBlock>
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`xlsx.mini.min.js` is a slimmer build that omits the following features:
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- CSV and SYLK encodings (directly affecting users outside of the United States)
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- XLSB / XLS / Lotus 1-2-3 / SpreadsheetML 2003 / Numbers file formats
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- [Stream utility functions](/docs/api/stream)
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<details>
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<summary><b>How to integrate the mini build</b> (click to show)</summary>
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Replace references to `xlsx.full.min.js` with `xlsx.mini.min.js`. Starting from
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scratch, a single script tag should be added at the top of the HTML page:
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<CodeBlock language="html">{`\
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<!-- use xlsx.mini.min.js from version ${current} -->
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<script lang="javascript" src="https://cdn.sheetjs.com/xlsx-${current}/package/dist/xlsx.mini.min.js"></script>`}
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</CodeBlock>
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</details>
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### Vendoring
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For general stability, making a local copy of SheetJS scripts ("vendoring") is
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strongly recommended. Vendoring decouples websites from SheetJS infrastructure.
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<ol start="1"><li><p>Download the script (<code parentName="pre">xlsx.full.min.js</code>) for
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the desired version. The current version is available at <a href={"https://cdn.sheetjs.com/xlsx-" + current + "/package/dist/xlsx.full.min.js"}>{"https://cdn.sheetjs.com/xlsx-" + current + "/package/dist/xlsx.full.min.js"}</a></p></li></ol>
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2) Move the script to a `public` folder with other scripts.
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3) Reference the local script from HTML pages:
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```html
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<script src="/public/xlsx.full.min.js"></script>
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```
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This script assigns to `window.XLSX`. The global can be used in other scripts.
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### Internet Explorer and Older Browsers
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For broad compatibility with JavaScript engines, the library is written using
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ECMAScript 3 language dialect. A "shim" script provides implementations of
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functions for older browsers and environments.
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Due to SSL compatibility issues, older versions of IE will not be able to use
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the CDN scripts directly. They should be downloaded and saved to a public path:
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<ul>
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<li>Standalone: <a href={"https://cdn.sheetjs.com/xlsx-" + current + "/package/dist/xlsx.mini.min.js"}>{"https://cdn.sheetjs.com/xlsx-" + current + "/package/dist/xlsx.mini.min.js"}</a></li>
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<li>Shim: <a href={"https://cdn.sheetjs.com/xlsx-" + current + "/package/dist/shim.min.js"}>{"https://cdn.sheetjs.com/xlsx-" + current + "/package/dist/shim.min.js"}</a></li>
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</ul>
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A `script` reference to the shim must be added before the standalone script:
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```html
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<!-- add the shim first -->
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<script type="text/javascript" src="shim.min.js"></script>
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<!-- after the shim is referenced, add the library -->
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<script type="text/javascript" src="xlsx.full.min.js"></script>
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```
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### Web Workers
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The standalone scripts can be loaded using `importScripts` at the top of the
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worker scripts:
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<CodeBlock language="js">{`\
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importScripts("https://cdn.sheetjs.com/xlsx-${current}/package/dist/shim.min.js");
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importScripts("https://cdn.sheetjs.com/xlsx-${current}/package/dist/xlsx.full.min.js");`}
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</CodeBlock>
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### Type Checker
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:::danger VSCode Telemetry and Data Exfiltration
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The official Microsoft builds of Visual Studio Code embed telemetry and send
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information to external servers.
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**[VSCodium](https://vscodium.com/) is a telemetry-free fork of VSCode.**
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When writing code that may process personally identifiable information (PII),
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the SheetJS team strongly encourages building VSCode from source or using IDEs
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that do not exfiltrate data.
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:::
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The type checker integrated in VSCodium and VSCode do not currently provide type
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hints when using the standalone build. Using the JSDoc `@type` directive coupled
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with type imports, VSCodium will recognize the types:
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<ol start="1">
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<li><p>Download the types (<code parentName="pre">index.d.ts</code>) for
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the desired version. The current version is available at <a href={"https://cdn.sheetjs.com/xlsx-" + current + "/package/types/index.d.ts"}>{"https://cdn.sheetjs.com/xlsx-" + current + "/package/types/index.d.ts"}</a></p></li>
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</ol>
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2) Rename the types file to `xlsx.d.ts`. It does not need to reside in the same
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folder as the standalone script.
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3) In the browser script referencing the global, prepend the following lines:
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```js title="Prepend this fragment in each source file referencing the XLSX global"
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/** @type {import("./xlsx")} */
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const XLSX = globalThis.XLSX;
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```
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4) If the `xlsx.d.ts` file is in a different folder, change the argument to the
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`import` method to reflect the relative path. For example, given the structure:
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```text title="Folder Structure"
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- /vendor
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- /vendor/xlsx.ts
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- /src
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- /src/app.js
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```
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`/src/app.js` must refer to the types as `../vendor/xlsx`:
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```js title="Preamble for /src/app.js when types are at /vendor/xlsx.d.ts"
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// highlight-next-line
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/** @type {import("../vendor/xlsx")} */
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const XLSX = globalThis.XLSX;
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```
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The `.d.ts` file extension must be omitted.
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:::warning pass
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JSDoc types using the `@import` directive are not supported in `<script>` tags.
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**This is a known bug with VSCode!**
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:::
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## ECMAScript Module Imports
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:::caution pass
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This section refers to imports in HTML pages using `<script type="module">`.
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The ["Frameworks and Bundlers"](/docs/getting-started/installation/frameworks)
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section covers imports in projects using bundlers (ViteJS) or frameworks
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(Kaioken / ReactJS / Angular / VueJS / Svelte)
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:::
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The ECMAScript Module build is saved to `xlsx.mjs` and can be directly added to
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a page with a `script` tag using `type="module"`:
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<CodeBlock language="html">{`\
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<script type="module">
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import { read, writeFileXLSX } from "https://cdn.sheetjs.com/xlsx-${current}/package/xlsx.mjs";
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</script>`}
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</CodeBlock>
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If Encoding support is required, `cpexcel.full.mjs` must be manually imported:
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<CodeBlock language="html">{`\
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<script type="module">
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/* load the codepage support library for extended support with older formats */
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import { set_cptable } from "https://cdn.sheetjs.com/xlsx-${current}/package/xlsx.mjs";
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import * as cptable from 'https://cdn.sheetjs.com/xlsx-${current}/package/dist/cpexcel.full.mjs';
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set_cptable(cptable);
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</script>`}
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</CodeBlock>
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Web Worker support is noted in [the "Web Workers" demo](/docs/demos/bigdata/worker#installation)
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### Dynamic Imports
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Dynamic imports with `import()` will only download the SheetJS scripts when they
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are used. This example will download the library when data is exported:
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<CodeBlock language="html">{`\
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<button id="xport">Export</button>
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<script type="module">
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xport.addEventListener("click", async() => {
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\n\
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/* dynamically import the script in the event listener */
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// highlight-next-line
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const XLSX = await import("https://cdn.sheetjs.com/xlsx-${current}/package/xlsx.mjs");
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\n\
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const wb = XLSX.utils.book_new();
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const ws = XLSX.utils.aoa_to_sheet([["a","b","c"],[1,2,3]]);
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XLSX.utils.book_append_sheet(wb, ws, "Sheet1");
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XLSX.writeFile(wb, "SheetJSESMTest.xlsx");
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});
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</script>`}
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</CodeBlock>
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:::caution pass
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The callback functions must be marked as `async` and the script block must have
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the attribute `type="module"`
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:::
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If Encoding support is required, `cpexcel.full.mjs` must be manually imported:
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<CodeBlock language="html">{`\
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<button id="xport">Export</button>
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<script type="module">
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xport.addEventListener("click", async() => {
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\n\
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/* dynamically import the scripts in the event listener */
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// highlight-start
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const XLSX = await import("https://cdn.sheetjs.com/xlsx-${current}/package/xlsx.mjs");
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const cptable = await import("https://cdn.sheetjs.com/xlsx-${current}/package/dist/cpexcel.full.mjs");
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XLSX.set_cptable(cptable);
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// highlight-end
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\n\
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const wb = XLSX.utils.book_new();
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const ws = XLSX.utils.aoa_to_sheet([["a","b","c"],[1,2,3]]);
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XLSX.utils.book_append_sheet(wb, ws, "Sheet1");
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XLSX.writeFile(wb, "SheetJSESMTest.xlsx");
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});
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</script>`}
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</CodeBlock>
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## Bower
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:::danger pass
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Bower is deprecated and the maintainers recommend using other tools.
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:::
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The Bower package manager supports tarballs from the SheetJS CDN:
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<CodeBlock language="bash">{`\
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npx bower install https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz`}
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</CodeBlock>
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Bower will place the standalone scripts in `bower_components/js-xlsx/dist/`
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