原文地址：Bougie的博客

jQuery作為曾經(jīng)Web前端的必備利器粟瞬，隨著MVVM框架的興起寝优，如今已稍顯沒(méi)落且轨。但它操作DOM的便利性無(wú)出其右。我用ES6寫了一個(gè)基于class簡(jiǎn)化版的jQuery礁叔，包含基礎(chǔ)DOM操作，支持鏈?zhǔn)讲僮髌。瑑H供日常使用琅关。當(dāng)然，它不支持IE讥蔽。

構(gòu)造器(constructor)

構(gòu)造一個(gè)tinyJquery對(duì)象涣易。功能：基于基本選擇器構(gòu)造，包括id勤篮、class都毒、tagName；基于原生DOM構(gòu)造碰缔，將原生DOM對(duì)象轉(zhuǎn)化為tinyJquery對(duì)象账劲。為支持批量操作，tinyJquery構(gòu)造器應(yīng)包含復(fù)數(shù)的DOM金抡。

class tinyJquery {
    constructor(name) {
        if (typeof name == 'string') {
            this.dom = document.querySelectorAll(name)
        } else if (name.constructor.name == 'NodeList' || Array.isArray(name)){
            this.dom = name
        } else {
            this.dom = [name]
        }
    }
}

使用$函數(shù)構(gòu)建tinyJquery對(duì)象

function $(name) {
    return new tinyJquery(name)
}

方法(后續(xù)會(huì)漸漸完善)

event操作

// addEventListener
on(eventName, fn, bubble = false) {
    this.dom.forEach(i => {
        i.addEventListener(eventName, fn, !bubble)
    })
    return $(this.dom)
}
// removeEventListener
un(eventName, fn, bubble = false) {
    this.dom.forEach(i => {
        i.removeEventListener(eventName, fn, !bubble)
    })
    return $(this.dom)
}

class操作

// addClass
ac(className) {
    this.dom.forEach(i => {
        i.classList.add(className)
    })
    return $(this.dom)
}
// removeClass
rc(className) {
    this.dom.forEach(i => {
        i.classList.remove(className)
    })
    return $(this.dom)
}
// toggleClass
tc(className) {
    this.dom.forEach(i => {
        i.classList.toggle(className)
    })
    return $(this.dom)
}
// containClass
cc(className) {
    let flag = false
    this.dom.forEach(i => {
        if(i.classList.contains(className)) flag = true
    })
    return flag
}

屬性操作

// set inline style
css(obj) {
    this.dom.forEach(v => {
        Object.keys(obj).forEach(i => {
            v.style[i] = obj[i]
        })
    })
    return $(this.dom)
}
// get or set input value
val(val) {
    if(val) {
        this.dom[0].value = val
        return $(this.dom)
    } else {
        return this.dom[0].value
    }
}

內(nèi)容操作

// get or set dom innerHtml
html(val) {
    if(val) {
        this.dom.forEach(i => {
            i.innerHTML = val
        })
        return $(this.dom)
    } else {
        return this.dom[0].innerHTML
    }
}
// get or set attribute
attr(key, val) {
    if(key && !val) {
        return this.dom[0].getAttribute(key)
    } else {
        this.dom.forEach(i => {
            i.setAttribute(key, val)
        })
        return $(this.dom)
    }
}

表單操作

// get JSONData
serializeObject() {
    let dom = this.dom[0], obj = {}
    dom.querySelectorAll('input, textarea').forEach(i => {
        obj[i.getAttribute('name')] = i.value
    })
    return obj
}
// get FormData
serializeForm() {
    let dom = this.dom[0], form = new FormData()
    dom.querySelectorAll('input, textarea').forEach(i => {
        form.append(i.getAttribute('name'), i.value)
    })
    return form
}

2018-04-16更新

Dom獲取

// parent
parent() {
    return $(this.dom[0].parentNode)
}
// siblings
siblings() {
    let dom = this.dom[0]
    var a = [];
    var p = dom.parentNode.children;
    for (var i = 0, pl = p.length; i < pl; i++) {
        if (p[i] !== dom) a.push(p[i]);
    }
    // console.log(Array.isArray(a))
    return $(a)
}

遍歷

// each
each(callback) {
    // this.dom.forEach(i => {
    //     // callback.bind(i)()
    //     callback.call(i, null)
    // })
    this.dom.forEach(i => {
        callback($(i))
    })
}