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htmlparser-query

v0.3.0

Published

a query tool used like jquery, based htmlparser

Downloads

14

Readme

htmlparser-query

lang: us-en

由于jquery在node@windows上无法运行, 编写此工具完成简单查询. 查询方法尽力向jquery靠拢.

安装

npm install htmlparser-query

用法

var x = require('htmlparser-query').init('string or Buffer');
x.find('...');

查询方法

  • 支持的基本查询 #id div .class [a] [a=b] [a!=b] [a^=b] [a$=b] [a*=b].
  • 支持组合查询 div.class div[aa..] div.cls[att..].
  • 支持子代查询 比如: div .bar a[title].
  • 支持链式查询: x.find('div').find('li')x.find('div li') 等效
  • ****支持查询: div~li div>li
  • 空格有严格意义, 不要乱加

自定义查询

  • 调用findf(filter), 传入过滤方法, 查询node属性.
  • node结构来自htmlparser.
node = {
    raw: 'div class="cc"',
    data: 'div class="cc"',
    type: 'tag', // maybe 'text'
    name: 'div',
    attribs: { class: 'cc', href:'' },
    children: []
};

快捷方法

  • elms -> [] 属性: 符合要求的[node]
  • size() -> int 方法: elms.length
  • raw() -> [] 方法: [node.raw]
  • text() -> string 方法: 筛选所以文本节点
  • attr(name) -> string 方法: 取得第一个拥有此属性的节点的属性值
  • attrs(name) -> [string] 方法: 取得所有拥有此属性的节点的属性值

循环

var a = require('htmlparser-query').load('string or Buffer')
var xq = a.find('ul.border li a[title]')
_.each(xq.elms, function(e){
    console.log($(e).attr('title'));
});