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vanilla-ob

v0.4.3

Published

<img src="logo.svg" alt="logo">

Downloads

135

Readme

vanilla-ob

为 Element 绑定动态属性,并且在有需要的时候进行更新,此库作为核心库使用在 aoife 项目中

Gzip size < 1kb

Install

$ npm install --save vanilla-ob

Use

import { ob } from "vanilla-ob";

const state = {
  name: "dog",
  css: 'page-style'
  age: 20,
};

const ele = document.createElement("div");

// 首先,绑定一些属性为动态属性

// 绑定动态属性,例子1 普通绑定
// 动态属性是一个函数,返回值会进行赋值
ob(ele, "textContent", () => state.name);
ob(ele, "className", () => state.css);

// 绑定动态属性,例子2 attribute 属性
// 当属性发现有 '-' 字符,会使用 setAttribute 赋值
ob(ele, "data-name", ()=>"hello");

// 绑定动态属性,例子3 赋值函数,可以返回 Promise
ob(ele, "data-list", () => fetch('/url').then(v=>v.text()));

// 其次,选择一部分元素,让其重新更新自身的动态属性

// 更新动态属性,例子1
// 重新执行某个元素及其子元素的 bind 函数,用新的返回值赋值
state.name = "world";
ob.next(ele);

// 更新动态属性,例子2
// 通过css选择器查找多个元素
ob.next(".page-style");

// 更新动态属性,例子3
// 使用第二个css选择器,忽略某些元素及其子元素的此次更新
ob.next(".page-style", ".ignore");


// 未有参数,更新所有
ob.next();

// 未有参数,更新除 ignore 之外的元素
ob.next(null, ".ignore");

document.body.append(ele);