JS面向对象之多选框实现

本文实例为大家分享了JS面向对象之多选框实现代码，供大家参考，具体内容如下

描述：

JS面向对象——多选框的实现

效果：

实现：

Utile.js

(function () {
  Object.prototype.addProto=function (sourceObj) {
    var names=Object.getOwnPropertyNames(sourceObj);
    for(var i=0;i0){
          fileName+=key+".png";
          break;
        }
      }
      if(arr.length===0){
        return false;
      }else{
        return {
          file:fileName,
          w:arr[0].frame.w,
          h:arr[0].frame.h,
          x:arr[0].frame.x,
          y:arr[0].frame.y
        };
      }
    },
    getNameXMLData:function (name) {
      var fileName=RES.basePath;
      for(var key in list){
        var elem=list[key].querySelector("[n="+name+"]");
        if(elem){
          fileName+=list[key].getAttribute("imagePath");
          break;
        }
      }
      if(!elem) return false;
      return {
        file:fileName,
        w:elem.getAttribute("w"),
        h:elem.getAttribute("h"),
        x:elem.getAttribute("x"),
        y:elem.getAttribute("y")
      }
    },
    getImage:function (name) {
      var obj;
      if(RES.type==="json"){
        obj=RES.getNameJSONData(name);
      }else if(RES.type==="xml"){
        obj=RES.getNameXMLData(name)
      }
      if(!obj)return;
      var div=document.createElement("div");
      Object.assign(div.style,{
        width:obj.w+"px",
        height:obj.h+"px",
        backgroundImage:"url("+obj.file+")",
        backgroundPositionX:-obj.x+"px",
        backgroundPositionY:-obj.y+"px",
        position:"absolute"
      });
      return div;
    },
    changeImg:function (elem,name) {
      var obj;
      if(RES.type==="json"){
        obj=RES.getNameJSONData(name);
      }else if(RES.type==="xml"){
        obj=RES.getNameXMLData(name)
      }
      if(!obj)return;
      Object.assign(elem.style,{
        width:obj.w+"px",
        height:obj.h+"px",
        backgroundImage:"url("+obj.file+")",
        backgroundPositionX:-obj.x+"px",
        backgroundPositionY:-obj.y+"px",
        position:"absolute"
      });
    }
  }
})();

UIComponent.js

var CheckBox=(function () {
  function CheckBox(parent) {
    this.checkView=this.init(parent);
  }
  /*
   //ES5 单例
  CheckBox.getInstance=function () {
    if(!CheckBox._instance){
      CheckBox._instance=new CheckBox();
    }
    return CheckBox._instance;
  };*/
  CheckBox.prototype.addProto({
    _label:"",
    _checked:false,
    init:function (parent) {
      if(this.checkView) return this.checkView;
      var div=document.createElement("div");
      var icon=RES.getImage("f-checkbox");
      div.appendChild(icon);
      var label=document.createElement("span");
      div.style.position=icon.style.position=label.style.position="relative";
      icon.style.float=label.style.float="left";
      label.textContent="";
      Object.assign(label.style,{
        fontSize:"16px",
        lineHeight:"20px",
        marginLeft:"5px",
        marginRight:"10px"
      });
      var h=RES.getNameXMLData("f-checkbox").h;
      icon.style.top=(20-h)/2+"px";
      div.appendChild(label);
      parent.appendChild(div);
      this.clickHandlerBind=this.clickHandler.bind(this);
      div.addEventListener("click",this.clickHandlerBind);
      return div;
    },
    clickHandler:function (e) {
      this.checked=!this.checked;
    },
    set label(value){
      this._label=value;
      this.checkView.lastElementChild.textContent=value;
    },
    get label(){
      return this._label;
    },
    set checked(value){
      if(this._checked===value)return;
      this._checked=value;
      if(value){
        RES.changeImg(this.checkView.firstElementChild,"f-checkbox-active");
      }else{
        RES.changeImg(this.checkView.firstElementChild,"f-checkbox");
      }
      this.checkView.firstElementChild.style.position="relative";
      this.dispatchMessage(value);
    },
    dispatchMessage:function (value) {
      var evt=new Event("change");
      evt.checked=value;
      evt.elem=this;
      document.dispatchEvent(evt);
    },
    get checked(){
      return this._checked;
    }
  });
  return CheckBox;
})();
 
var Radio=(function () {
  function Radio(parent,groupName) {
    this.constructor.supClass.constructor.call(this,parent);
    this.groupName=groupName;
    this.checkView.self=this;
    this.checkView.setAttribute("groupName",groupName);
  }
 
  Radio.extendClass(CheckBox);
 
  Radio.prototype.addProto({
    clickHandler:function (e) {
      // console.log(Model.instance.menuData);
      if(this.checked)return;
      var list=document.querySelectorAll("[groupName="+this.groupName+"]");
      for(var i=0;i 
 

html

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。