JSSoup
I'm a fan of Python library BeautifulSoup. It's feature-rich and very easy to use. But when I am working on a small react-native project, and I tried to find a HTML parser library
like BeautifulSoup, I failed.
So I want to write a HTML parser library which can be so easy to use just like BeautifulSoup in Javascript.
JSSoup uses tautologistics/node-htmlparser as HTML dom parser,
and creates a series of BeautifulSoup like API on top of it.
JSSoup supports both node and react-native.
Naming Style
JSSoup tries to use the same interfaces as BeautifulSoup so BeautifulSoup user can use JSSoup seamlessly.
However, JSSoup uses Javascript's camelCase naming style instead of Python's underscore naming style.
Such as find_all() in BeautifulSoup is replaced as findAll().
Install
$ npm install jssoup
How to use JSSoup
Import
//react-native
import JSSoup from 'jssoup';
// nodejs
var JSSoup = require('jssoup').default;Make Soup
var soup = new JSSoup('<html><head>hello</head></html>');The text element only contains whitespace will be ignored by default. To disable this feature, set second parameter of JSSoup to false. This parameter is "ignoreWhitespace" and will be passed into htmlparser.
var soup = new JSSoup('<html><head>hello</head></html>', false);Name
var soup = new JSSoup('<html><head>hello</head></html>');
var tag = soup.find('head');
tag.name
// 'head'
tag.name = 'span'
console.log(tag)
//<span>hello</span>Attributes
var soup = new JSSoup('<tag id="hi" class="banner">hello</tag>');
var tag = soup.nextElement;
tag.attrs
// {id: 'hi', class: 'banner'}
tag.attrs.id = 'test';
console.log(tag)
// <tag id="test" class="banner">hello</tag>Navigation
.previousElement, .nextElement
var data = `
<div>
<a>1</a>
<b>2</b>
<c>3</c>
</div>
`
var soup = new JSSoup(data);
var div = soup.nextElement;
var b = div.nextElement.nextElement;
// b.string: '2'
var a = b.previousElement;
// a.string: '1'.previousSibling, .nextSibling
var soup = new JSSoup(data);
var div = soup.nextElement;
var a = div.nextElement;
var b = a.nextSibling;
var c = b.nextSibling;
c.nextSibling == undefined;.previousSiblings, .nextSiblings
var soup = new JSSoup(data);
var a = soup.find("a");
a.nextSiblings
// [<b>2</b>, <c>3</c>]
var c = soup.find("c");
c.previousSiblings
// [<a>1</a>, <b>2</b>].contents
div.contents
// [<a>1</a>, <b>2</b>, <c>3</c>].descendants
div.descendants
// [<a>1</a>, 1, <b>2</b>, 2, <c>3</c>, 3].parent
div.parent == soupEdit
.extract()
b.extract();
div.contents
// [<a>1</a>, <c>3</c>].append()
b.extract();
div.append(b)
div.contents
// [<a>1</a>, <c>3</c>, <b>2</b>].insert(position, new Element)
d.prettify('', '')
// <d>4</d>
div.insert(1, d)
div.contents
// [<a>1</a>, <d>4</d>, <b>2</b>, <c>3</c>].replaceWith(new Element)
d.prettify('', '')
// <d>4</d>
b.replaceWith(d)
div.contents
// [<a>1</a>, <d>4</d>, <c>3</c>]
c.string.replaceWith('new')
div.contents
// [<a>1</a>, <d>4</d>, <c>new</c>]Search
.findAll()
var data = `
<div>
<div class="h1"></div>
<a>hello</a>
</div>
`
var soup = new JSSoup(data);
soup.findAll('a')
// [<a>hello</a>]
soup.findAll('div', 'h1')
// [<div class="h1"></div>].find()
var data = `
<div>
<p> hello </p>
<p> world </p>
</div>
`
var soup = new JSSoup(data);
soup.find('p')
// <p> hello </p>.findNextSibling()
var data = `
<div>
<span> test </span>
<div> div </div>
<p> hello </p>
<p> world </p>
</div>
`
var soup = new JSSoup(data);
var span = soup.find('span');
span.findNextSibling('p')
// <p> hello </p>.findNextSiblings()
var data = `
<div>
<span> test </span>
<div> div </div>
<p> hello </p>
<p> world </p>
</div>
`
var soup = new JSSoup(data);
var span = soup.find('span');
span.findNextSiblings('p')
// <p> hello </p>
// <p> world </p>.findPreviousSibling()
var data = `
<div>
<p> hello </p>
<p> world </p>
<div> div </div>
<span> test </span>
</div>
`
var soup = new JSSoup(data);
var span = soup.find('span');
span.findPreviousSibling('p')
// <p> world </p>.findPreviousSiblings()
var data = `
<div>
<p> hello </p>
<p> world </p>
<div> div </div>
<span> test </span>
</div>
`
var soup = new JSSoup(data);
var span = soup.find('span');
span.findPreviousSiblings('p')
// <p> hello </p>
// <p> world </p>Output
.prettify()
var soup = new JSSoup('<html><head>hello</head></html>');
soup.prettify()
// <html>
// <head>
// hello
// </head>
// </html>.getText(), .text
div.text
// '123'
div.getText('|')
// '1|2|3'.string
b.string == '2';
var soup = new JSSoup('<html><head>hello</head></html>');
soup.string == 'hello';Run Test
npm test
Status
There's a lot of work need to be done.