forked from sheetjs/docs.sheetjs.com
knockout
This commit is contained in:
parent
87ac5667c0
commit
260bb7014e
@ -205,7 +205,7 @@ $ yarn add https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz`}
|
||||
|
||||
```js title="esbrowser.js"
|
||||
// highlight-next-line
|
||||
import { set_fs, utils, version, writeFileXLSX } from 'xlsx/xlsx.mjs';
|
||||
import { utils, version, writeFileXLSX } from 'xlsx/xlsx.mjs';
|
||||
|
||||
(async() => {
|
||||
/* fetch JSON data and parse */
|
||||
@ -461,7 +461,7 @@ $ yarn add https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz`}
|
||||
|
||||
```js title="index.js"
|
||||
// highlight-next-line
|
||||
import { set_fs, utils, version, writeFileXLSX } from 'xlsx/xlsx.mjs';
|
||||
import { utils, version, writeFileXLSX } from 'xlsx/xlsx.mjs';
|
||||
|
||||
document.getElementById("xport").addEventListener("click", async() => {
|
||||
/* fetch JSON data and parse */
|
||||
|
||||
94
docz/docs/04-getting-started/03-demos/12-legacy.md
Normal file
94
docz/docs/04-getting-started/03-demos/12-legacy.md
Normal file
@ -0,0 +1,94 @@
|
||||
---
|
||||
sidebar_position: 12
|
||||
title: Legacy Frameworks
|
||||
---
|
||||
|
||||
import current from '/version.js';
|
||||
|
||||
Over the years, many frameworks have been released. Some were popular years ago
|
||||
but have waned in recent years. There are still many deployments using these
|
||||
frameworks and it is oftentimes esasier to continue maintenance than to rewrite
|
||||
using modern web techniques.
|
||||
|
||||
SheetJS libraries strive to maintain broad browser and JS engine compatibility.
|
||||
|
||||
## Integration
|
||||
|
||||
The ["Standalone Browser Scripts"](../../installation/standalone) section has
|
||||
instructions for obtaining or referencing the standalone scripts. These are
|
||||
designed to be referenced with `<script>` tags.
|
||||
|
||||
## Frameworks
|
||||
|
||||
### KnockoutJS
|
||||
|
||||
[KnockoutJS](https://en.wikipedia.org/wiki/Knockout_(web_framework)) was a
|
||||
popular MVVM framework.
|
||||
|
||||
The [Live demo](pathname:///knockout/knockout.html) shows a view model that is
|
||||
updated with file data and exported to spreadsheets.
|
||||
|
||||
|
||||
#### State
|
||||
|
||||
Arrays of arrays are the simplest data structure for representing worksheets.
|
||||
|
||||
```js
|
||||
var aoa = [
|
||||
[1, 2], // A1 = 1, B1 = 2
|
||||
[3, 4] // A1 = 3, B1 = 4
|
||||
];
|
||||
```
|
||||
|
||||
`ko.observableArray` should be used to create the view model:
|
||||
|
||||
```js
|
||||
function ViewModel() {
|
||||
/* use an array of arrays */
|
||||
this.aoa = ko.observableArray([ [1,2], [3,4] ]);
|
||||
}
|
||||
/* create model */
|
||||
var model = new ViewModel();
|
||||
ko.applyBindings(model);
|
||||
```
|
||||
|
||||
`XLSX.utils.sheet_to_json` with `header: 1` generates data for the model:
|
||||
|
||||
```js
|
||||
/* starting from a `wb` workbook object, pull first worksheet */
|
||||
var ws = wb.Sheets[wb.SheetNames[0]];
|
||||
/* convert the worksheet to an array of arrays */
|
||||
var aoa = XLSX.utils.sheet_to_json(ws, {header:1});
|
||||
/* update model */
|
||||
model.aoa(aoa);
|
||||
```
|
||||
|
||||
`XLSX.utils.aoa_to_sheet` generates worksheets from the model:
|
||||
|
||||
```js
|
||||
var aoa = model.aoa();
|
||||
var ws = XLSX.utils.aoa_to_sheet(aoa);
|
||||
```
|
||||
|
||||
#### Data Binding
|
||||
|
||||
`data-bind="foreach: ..."` provides a simple approach for binding to `TABLE`:
|
||||
|
||||
```html
|
||||
<table data-bind="foreach: aoa">
|
||||
<tr data-bind="foreach: $data">
|
||||
<td><span data-bind="text: $data"></span></td>
|
||||
</tr>
|
||||
</table>
|
||||
```
|
||||
|
||||
Unfortunately the nested `"foreach: $data"` binding is read-only. A two-way
|
||||
binding is possible using the `$parent` and `$index` binding context properties:
|
||||
|
||||
```html
|
||||
<table data-bind="foreach: aoa">
|
||||
<tr data-bind="foreach: $data">
|
||||
<td><input data-bind="value: $parent[$index()]" /></td>
|
||||
</tr>
|
||||
</table>
|
||||
```
|
||||
@ -20,7 +20,7 @@ The demo projects include small runnable examples and short explainers.
|
||||
|
||||
- [`Angular.JS`](https://github.com/SheetJS/SheetJS/tree/master/demos/angular/)
|
||||
- [`Angular 2+ and Ionic`](https://github.com/SheetJS/SheetJS/tree/master/demos/angular2/)
|
||||
- [`Knockout`](https://github.com/SheetJS/SheetJS/tree/master/demos/knockout/)
|
||||
- [`Knockout`](./legacy#knockout)
|
||||
- [`Meteor`](https://github.com/SheetJS/SheetJS/tree/master/demos/meteor/)
|
||||
- [`React, React Native and NextJS`](https://github.com/SheetJS/SheetJS/tree/master/demos/react/)
|
||||
- [`VueJS, WeeX, and NuxtJS`](https://github.com/SheetJS/SheetJS/tree/master/demos/vue/)
|
||||
|
||||
109
docz/static/knockout/knockout.html
Normal file
109
docz/static/knockout/knockout.html
Normal file
@ -0,0 +1,109 @@
|
||||
<!DOCTYPE html>
|
||||
<!-- xlsx.js (C) 2013-present SheetJS http://sheetjs.com -->
|
||||
<!-- vim: set ts=2: -->
|
||||
<html ng-app="sjs">
|
||||
<head>
|
||||
<title>SheetJS + KnockoutJS</title>
|
||||
<!-- KnockoutJS -->
|
||||
<script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.4.2/knockout-min.js"></script>
|
||||
|
||||
<!-- SheetJS js-xlsx library -->
|
||||
<script src="https://cdn.sheetjs.com/xlsx-latest/package/dist/shim.min.js"></script>
|
||||
<script src="https://cdn.sheetjs.com/xlsx-latest/package/dist/xlsx.full.min.js"></script>
|
||||
</head>
|
||||
<body>
|
||||
<pre>
|
||||
<b><a href="https://sheetjs.com">SheetJS + KnockoutJS demo</a></b>
|
||||
|
||||
The core library can be used as-is in KnockoutJS applications.
|
||||
The <a href="https://docs.sheetjs.com">Community Edition README</a> details some common use cases.
|
||||
We also have some <a href="https://docs.sheetjs.com/docs/getting-started/demos/">more public demos</a>
|
||||
|
||||
This demo shows:
|
||||
- view model backed by an array of arrays
|
||||
- file import that refreshes the model
|
||||
- table of editable `input` elements that are bound to the model
|
||||
- file export based on the model
|
||||
|
||||
<a href="https://sheetjs.com/pres.xlsx">Sample Spreadsheet</a>
|
||||
</pre>
|
||||
|
||||
<input name="xlfile" id="xlf" class="left" style="width: 200px;" type="file">
|
||||
<table data-bind="foreach: aoa">
|
||||
<tr data-bind="foreach: $data">
|
||||
<td><input data-bind="value: $parent[$index()]"/></td>
|
||||
</tr>
|
||||
</table>
|
||||
<script id='aoa' type="text/html"></script>
|
||||
<button id="export">Export Sheet to XLSX</button>
|
||||
|
||||
</div>
|
||||
|
||||
<script>
|
||||
/* knockout setup */
|
||||
function ViewModel() {
|
||||
/* use an array of arrays */
|
||||
this.aoa = ko.observableArray([
|
||||
[1,2],
|
||||
[3,4]
|
||||
]);
|
||||
}
|
||||
|
||||
var model = new ViewModel();
|
||||
ko.applyBindings(model);
|
||||
/* do an update to confirm KO was loaded properly */
|
||||
model.aoa([[1,2,3],[4,5,6]]);
|
||||
model.aoa.push([7,8,9]);
|
||||
|
||||
/* set up file input handler */
|
||||
(function() {
|
||||
var input_dom_element = document.getElementById('xlf');
|
||||
function handleFile(e) {
|
||||
var files = e.target.files, f = files[0];
|
||||
var reader = new FileReader();
|
||||
reader.onload = function(e) {
|
||||
var data = e.target.result;
|
||||
data = new Uint8Array(data);
|
||||
var workbook = XLSX.read(data, {type: 'array'});
|
||||
process_wb(workbook);
|
||||
};
|
||||
reader.readAsArrayBuffer(f);
|
||||
}
|
||||
input_dom_element.addEventListener('change', handleFile, false);
|
||||
})();
|
||||
|
||||
/* update model */
|
||||
function process_wb(wb) {
|
||||
/* pull first worksheet */
|
||||
var ws = wb.Sheets[wb.SheetNames[0]];
|
||||
/* convert to AOA */
|
||||
var aoa = XLSX.utils.sheet_to_json(ws, {header:1});
|
||||
/* update model */
|
||||
model.aoa(aoa);
|
||||
}
|
||||
|
||||
document.getElementById("export").onclick = function() {
|
||||
/* get array of arrays */
|
||||
var data = model.aoa();
|
||||
/* convert to worksheet */
|
||||
var ws = XLSX.utils.aoa_to_sheet(data);
|
||||
/* build new workbook */
|
||||
var wb = XLSX.utils.book_new(); XLSX.utils.book_append_sheet(wb, ws, "Sheet1");
|
||||
/* write file */
|
||||
XLSX.writeFile(wb, "SheetJSKnockoutDemo.xlsx")
|
||||
};
|
||||
</script>
|
||||
<script type="text/javascript">
|
||||
/* eslint no-use-before-define:0 */
|
||||
var _gaq = _gaq || [];
|
||||
_gaq.push(['_setAccount', 'UA-36810333-1']);
|
||||
_gaq.push(['_trackPageview']);
|
||||
|
||||
(function() {
|
||||
var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
|
||||
ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
|
||||
var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
|
||||
})();
|
||||
</script>
|
||||
</body>
|
||||
</html>
|
||||
Loading…
Reference in New Issue
Block a user