forked from sheetjs/docs.sheetjs.com
226 lines
5.7 KiB
Markdown
226 lines
5.7 KiB
Markdown
|
---
|
||
|
|
title: Bundling Sheets with RequireJS
|
||
|
|
sidebar_label: RequireJS
|
||
|
|
pagination_prev: demos/index
|
||
|
|
pagination_next: demos/grid/index
|
||
|
|
sidebar_position: 11
|
||
|
|
---
|
||
|
|
|
||
|
|
import current from '/version.js';
|
||
|
|
import Tabs from '@theme/Tabs';
|
||
|
|
import TabItem from '@theme/TabItem';
|
||
|
|
import CodeBlock from '@theme/CodeBlock';
|
||
|
|
|
||
|
|
[RequireJS](https://requirejs.org/) is a JavaScript file and module loader. It
|
||
|
|
includes an in-browser loader as well as a static optimizer.
|
||
|
|
|
||
|
|
[SheetJS](https://sheetjs.com) is a JavaScript library for reading and writing
|
||
|
|
data from spreadsheets.
|
||
|
|
|
||
|
|
This demo uses RequireJS and SheetJS to export data. We'll explore how to load
|
||
|
|
SheetJS in a site using RequireJS and how to use the `r.js` optimizer to create
|
||
|
|
a bundled site.
|
||
|
|
|
||
|
|
The [Live demo](pathname:///requirejs/requirejs.html) loads RequireJS from the
|
||
|
|
CDN, uses it to load the standalone script from the SheetJS CDN, and uses the
|
||
|
|
`XLSX` variable to create a button click handler that creates a workbook.
|
||
|
|
|
||
|
|
:::note
|
||
|
|
|
||
|
|
This demo was last tested on 2023 October 18 against RequireJS `2.3.6`
|
||
|
|
|
||
|
|
:::
|
||
|
|
|
||
|
|
## Integration Details
|
||
|
|
|
||
|
|
The [SheetJS Standalone scripts](/docs/getting-started/installation/standalone)
|
||
|
|
comply with AMD `define` semantics. They support RequireJS and the `r.js`
|
||
|
|
optimizer out of the box.
|
||
|
|
|
||
|
|
### Config
|
||
|
|
|
||
|
|
The RequireJS config should set the `xlsx` alias in the `paths` property.
|
||
|
|
|
||
|
|
#### SheetJS CDN
|
||
|
|
|
||
|
|
The SheetJS CDN URL can be directly referenced in a path alias:
|
||
|
|
|
||
|
|
<CodeBlock language="js">{`\
|
||
|
|
require.config({
|
||
|
|
baseUrl: ".",
|
||
|
|
name: "app",
|
||
|
|
paths: {
|
||
|
|
// highlight-next-line
|
||
|
|
xlsx: "https://cdn.sheetjs.com/xlsx-${current}/package/dist/xlsx.full.min"
|
||
|
|
}
|
||
|
|
});`}
|
||
|
|
</CodeBlock>
|
||
|
|
|
||
|
|
|
||
|
|
#### Vendoring
|
||
|
|
|
||
|
|
After downloading the SheetJS standalone script, a relative path can be used in
|
||
|
|
the path alias. For example, if the standalone script was downloaded in the same
|
||
|
|
directory as the HTML page, the path should be `./xlsx.full.min`:
|
||
|
|
|
||
|
|
```js
|
||
|
|
require.config({
|
||
|
|
baseUrl: ".",
|
||
|
|
name: "app",
|
||
|
|
paths: {
|
||
|
|
// highlight-next-line
|
||
|
|
xlsx: "./xlsx.full.min"
|
||
|
|
}
|
||
|
|
});
|
||
|
|
```
|
||
|
|
|
||
|
|
### Usage
|
||
|
|
|
||
|
|
Once the alias is set, `"xlsx"` can be required from app scripts:
|
||
|
|
|
||
|
|
```js
|
||
|
|
// highlight-next-line
|
||
|
|
require(["xlsx"], function(XLSX) {
|
||
|
|
/* use XLSX here */
|
||
|
|
console.log(XLSX.version);
|
||
|
|
});
|
||
|
|
```
|
||
|
|
|
||
|
|
Within the callback, the `XLSX` variable exposes the functions listed in the
|
||
|
|
["API Reference"](/docs/api/) section of the documentation.
|
||
|
|
|
||
|
|
## Complete Example
|
||
|
|
|
||
|
|
This demo will explore the standalone RequireJS script and the `r.js` optimizer.
|
||
|
|
|
||
|
|
### Standalone RequireJS
|
||
|
|
|
||
|
|
0) Download the SheetJS Standalone script and move to the project directory:
|
||
|
|
|
||
|
|
<ul>
|
||
|
|
<li><a href={`https://cdn.sheetjs.com/xlsx-${current}/package/dist/xlsx.full.min.js`}>xlsx.full.min.js</a></li>
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
<CodeBlock language="bash">{`\
|
||
|
|
curl -LO https://cdn.sheetjs.com/xlsx-${current}/package/dist/xlsx.full.min.js`}
|
||
|
|
</CodeBlock>
|
||
|
|
|
||
|
|
1) Save the following to `index.html`:
|
||
|
|
|
||
|
|
```html title="index.html"
|
||
|
|
<!DOCTYPE html>
|
||
|
|
<html lang="en">
|
||
|
|
<head></head>
|
||
|
|
<body>
|
||
|
|
<h1>SheetJS Presidents Demo</h1>
|
||
|
|
<button id="xport">Click here to export</button>
|
||
|
|
<script src="http://requirejs.org/docs/release/2.3.6/comments/require.js"></script>
|
||
|
|
<script>
|
||
|
|
/* Wire up RequireJS */
|
||
|
|
require.config({
|
||
|
|
baseUrl: ".",
|
||
|
|
name: "SheetJSRequire",
|
||
|
|
paths: {
|
||
|
|
xlsx: "./xlsx.full.min"
|
||
|
|
}
|
||
|
|
});
|
||
|
|
</script>
|
||
|
|
<script src="SheetJSRequire.js"></script>
|
||
|
|
</body>
|
||
|
|
</html>
|
||
|
|
```
|
||
|
|
|
||
|
|
2) Save the following to `SheetJSRequire.js`:
|
||
|
|
|
||
|
|
```js title="SheetJSRequire.js"
|
||
|
|
require(["xlsx"], function(XLSX) {
|
||
|
|
document.getElementById("xport").addEventListener("click", function() {
|
||
|
|
/* fetch JSON data and parse */
|
||
|
|
var url = "https://sheetjs.com/data/executive.json";
|
||
|
|
fetch(url).then(function(res) { return res.json(); }).then(function(raw_data) {
|
||
|
|
|
||
|
|
/* filter for the Presidents */
|
||
|
|
var prez = raw_data.filter(function(row) { return row.terms.some(function(term) { return term.type === "prez"; }); });
|
||
|
|
|
||
|
|
/* flatten objects */
|
||
|
|
var rows = prez.map(function(row) { return {
|
||
|
|
name: row.name.first + " " + row.name.last,
|
||
|
|
birthday: row.bio.birthday
|
||
|
|
}; });
|
||
|
|
|
||
|
|
/* generate worksheet and workbook */
|
||
|
|
var worksheet = XLSX.utils.json_to_sheet(rows);
|
||
|
|
var workbook = XLSX.utils.book_new();
|
||
|
|
XLSX.utils.book_append_sheet(workbook, worksheet, "Dates");
|
||
|
|
|
||
|
|
/* fix headers */
|
||
|
|
XLSX.utils.sheet_add_aoa(worksheet, [["Name", "Birthday"]], { origin: "A1" });
|
||
|
|
|
||
|
|
/* calculate column width */
|
||
|
|
var max_width = rows.reduce(function(w, r) { return Math.max(w, r.name.length); }, 10);
|
||
|
|
worksheet["!cols"] = [ { wch: max_width } ];
|
||
|
|
|
||
|
|
/* create an XLSX file and try to save to Presidents.xlsx */
|
||
|
|
XLSX.writeFileXLSX(workbook, "Presidents.xlsx");
|
||
|
|
});
|
||
|
|
});
|
||
|
|
});
|
||
|
|
```
|
||
|
|
|
||
|
|
:::info pass
|
||
|
|
|
||
|
|
The `r.js` optimizer does not handle `async` functions or ES6 arrow functions.
|
||
|
|
|
||
|
|
To demonstrate compatibility with older versions of Webpack, `SheetJSRequire.js`
|
||
|
|
uses normal functions and traditional Promise chains.
|
||
|
|
|
||
|
|
:::
|
||
|
|
|
||
|
|
3) Start a local HTTP server, then go to `http://localhost:8080/`
|
||
|
|
|
||
|
|
```bash
|
||
|
|
npx http-server .
|
||
|
|
```
|
||
|
|
|
||
|
|
Click on "Click here to export" to generate a file.
|
||
|
|
|
||
|
|
### r.js Optimizer
|
||
|
|
|
||
|
|
4) Create `build.js` configuration for the optimizer:
|
||
|
|
|
||
|
|
```js title="build.js"
|
||
|
|
({
|
||
|
|
baseUrl: ".",
|
||
|
|
name: "SheetJSRequire",
|
||
|
|
paths: {
|
||
|
|
xlsx: "./xlsx.full.min"
|
||
|
|
},
|
||
|
|
out: "SheetJSRequire.min.js"
|
||
|
|
});
|
||
|
|
```
|
||
|
|
|
||
|
|
5) Run the `r.js` optimizer to create `SheetJSRequire.min.js`:
|
||
|
|
|
||
|
|
```bash
|
||
|
|
npx -p requirejs@2.3.6 r.js -o build.js
|
||
|
|
```
|
||
|
|
|
||
|
|
6) Save the following to `optimized.html`:
|
||
|
|
|
||
|
|
```html title="optimized.html"
|
||
|
|
<!DOCTYPE html>
|
||
|
|
<html lang="en">
|
||
|
|
<head></head>
|
||
|
|
<body>
|
||
|
|
<h1>SheetJS Presidents Demo</h1>
|
||
|
|
<button id="xport">Click here to export</button>
|
||
|
|
<script src="http://requirejs.org/docs/release/2.3.3/comments/require.js"></script>
|
||
|
|
<script src="SheetJSRequire.min.js"></script>
|
||
|
|
</body>
|
||
|
|
</html>
|
||
|
|
```
|
||
|
|
|
||
|
|
7) Open `http://localhost:8080/optimized.html`
|
||
|
|
|
||
|
|
Click on "Click here to export" to generate a file.
|