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jQuery-like SPA operation library

SPA like vue is supported。offers functions like click element after loaded, call function after url change。

Ten skrypt nie powinien być instalowany bezpośrednio. Jest to biblioteka dla innych skyptów do włączenia dyrektywą meta // @require https://update.greasyfork.org/scripts/440334/1023152/jQuery-like%20SPA%20operation%20library.js 

// ==UserScript==
// @name             jQuery-like SPA operation library
// @description  SPA like vue is supported。offers functions like click element after loaded， call function after url change。
// @author          yechenyin
// @license          MIT
// @version         1.0.3
// ==/UserScript==


//闭包里的方法的用法和jquery同命名方法一致
(function () {
  var jQuery = function (selector) {
    return new jQuery.fn.init(selector)
  }
  jQuery.fn = jQuery.prototype = {
    length: 0,
    selector: '',
    init: function (elementOrSelector) {
      var nodes = []
      if (typeof (elementOrSelector) == 'string') {
        this.selector = elementOrSelector
        nodes = document.querySelectorAll(this.selector)
      } else if (elementOrSelector instanceof NodeList) {
        nodes = elementOrSelector
      } else if (elementOrSelector instanceof Element) {
        nodes = [elementOrSelector]
      }
      this.length = nodes.length
      for (var i = 0; i < nodes.length; i++) {
        this[i] = nodes[i]
      }
    },
    each: function (callback) {
      for (var i = 0; i < this.length; i++) {
        callback.call(this[i])
      }
    },
    on: function (event, callback) {
      this.each(function () {
        this.addEventListener(event, callback)
      })
    },
    text: function (string) {
      var i = 0
      if (string !== undefined) {
        for (i = 0; i < this.length; i++) {
          this[i].innerText = string
        }
      } else {
        return this[0].innerText
      }
    },
    val: function (value) {
      if (value === undefined) {
        var ret
        if (this[0].type == 'checkbox')
          ret = this[0].checked
        else if (this[0].type == 'radio' || this[0].type == 'text' || this[0].type == 'password' || this[0].tagName == 'select')
          ret = this[0].value
        return ret
      } else {
        for (var i = 0; i < this.length; i++) {
          if (this[i].type == 'checkbox' && Boolean(value))
            this[i].click()
          else if (this[i].type == 'radio')
            this[i].checked = this[i].value == value
          else if (this[i].type == 'text')
            this[i].value = value
          else if (this[i].type == 'password')
            this[i].value = value
          else if (this[i].tagName == 'select')
            this[i].value = value
          this[i].dispatchEvent(new Event('input', { bubbles: true }))
        }
      }
    },
    attr: function (attribute, value) {
      if (value === undefined) {
        return this[0].getAttribute(attribute)
      } else {
        this.each(function () {
          this.setAttribute(attribute, value)
        })
      }
    },
    click: function () {
      this[0].click()
    },
    find: function (selector) {
      var j = 0
      var result = []
      for (var i = 0; i < this.length; i++) {
        if (this[i].querySelectorAll(selector).length) {
        }
      }
    },
    append: function (html) {
      for (var i = 0; i < this.length; i++) {
        this[i].innerHTML += html
      }
    },
  }

  jQuery.fn.init.prototype = jQuery.fn
  if (!window.jQuery) window.jQuery = window.$ = jQuery
})()

//每当符合选择器规则的元素插入到页面中时，唤起callback方法。如果trigger_once为true，只唤起一次
jQuery.fn.inserted = function (callback, trigger_once = false) {
  var selector = this.selector;
  if ($(selector).length > 0) {
    //console.log($(selector).length + ' ' + selector + " is loaded at begin");
    callback.call($(selector));
  }
  var finished = false
  var recallback = function (mutationsList, observer) {
    for (var i = 0; i < mutationsList.length; i++) {
      //console.log(mutationsList[i].target)
      if (mutationsList[i].addedNodes) {
        for (var j = 0; j < mutationsList[i].addedNodes.length; j++) {
          var element = mutationsList[i].addedNodes[j]
          if (!(trigger_once && finished) && element instanceof Element && element.querySelectorAll(selector).length) {
            var container = ''
            if (element.id)
              container = '#' + element.id
            else if (element.className)
              container = '.' + element.className
            else
              container = element.outerHtml
            //console.log(container + ' which contains ' + selector + ' is loaded')
            if (trigger_once) {
              observer.disconnect()
              finished = true
            }
            callback.call($(element.querySelectorAll(selector)))
          }
        }
      }
    }
  };
  var MutationObserver = window.MutationObserver || window.WebKitMutationObserver || window.MozMutationObserver
  if (MutationObserver) {
    var observer = new MutationObserver(recallback)
    observer.observe(document.body, {
      childList: true,
      subtree: true
    })
  }
}

//当符合选择器规则的元素插入到页面中时，调用一次callback方法，之后不会在唤起
jQuery.fn.loaded = function (callback) {
  if (callback)
    this.inserted(callback, true);
}

//在元素加载完成后经过delay（单位毫秒）延迟后点击元素
jQuery.fn.clickAfterLoaded = function (delay = 0) {
  this.loaded(function () {
    setTimeout(function () {
      this[0].click()
    }.bind(this), delay)
  })
}
//在元素加载完成后经过delay（单位毫秒）延迟后设置输入值
jQuery.fn.setAfterLoaded = function (value, delay = 0) {
  this.loaded(function () {
    setTimeout(function () {
      this.val(value)
    }.bind(this), delay)
  })
}

//替代得到http成功回应后的回调
$.replaceResponseCallback = function (callback, continueOriginalCallback = false) {
  var open = XMLHttpRequest.prototype.open
  XMLHttpRequest.prototype.open = function () {
    this.addEventListener(
      'readystatechange',
      function () {
        if (
          this.readyState == 4 &&
          this.response
        ) {
          callback.call(this)
        }
      },
      false
    )
    if (continueOriginalCallback)
      open.apply(this, arguments)
    XMLHttpRequest.prototype.open = open
  }
}
//url改变后唤起callback，支持监测SPA的#后面的字符串变化
$.onurlchange = function (callback) {
  history.pushState = ((f) =>
    function pushState() {
      var ret = f.apply(this, arguments)
      window.dispatchEvent(new Event('pushstate'))
      window.dispatchEvent(new Event('urlchange'))
      return ret
    })(history.pushState)

  history.replaceState = ((f) =>
    function replaceState() {
      var ret = f.apply(this, arguments)
      window.dispatchEvent(new Event('replacestate'))
      window.dispatchEvent(new Event('urlchange'))
      return ret
    })(history.replaceState)

  window.addEventListener('popstate', () => {
    window.dispatchEvent(new Event('urlchange'))
  })
  window.addEventListener('urlchange', function () {
    callback()
  })
}