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封装一个简单的UI组件

2024-09-22 06:51:10   218人阅读

　　方法其实很简单，用一个函数把整个过程包起来。调用时用new，这样可以在一个页面使用多个改组件。这是一个非常简单的方法，后面还有很大改进的空间。下面是一个封装日历的示例。

技术分享

　　现在我们的组件类似bootstrap，写好下面的html结构，然后引入ui.css和ui.js，就可以生成相应的UI组件了。效果如上图。

<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<title>Calendar</title>
<link rel="stylesheet" type="text/css" href="css/ui.css">
</head>

<body>
<!-- 第一个日历 -->
<div class="calendar">
  <div class="title">
    <h1 class="green calendar-title">Month</h1>
    <h2 class="green small calendar-year">Year</h2>
    <a href="" class="prev">Prev Month</a>
    <a href="" class="next">Next Month</a>
  </div>
  <div class="body">
    <div class="lightgrey body-list">
      <ul>
        <li>MON</li>
        <li>TUE</li>
        <li>WED</li>
        <li>THU</li>
        <li>FRI</li>
        <li>SAT</li>
        <li>SUN</li>
      </ul>
    </div>
    <div class="darkgrey body-list">
      <ul class="days">
      </ul>
    </div>
  </div>
</div>
<!-- 第二个日历 -->
<div class="calendar">
  <div class="title">
    <h1 class="green calendar-title">Month</h1>
    <h2 class="green small calendar-year">Year</h2>
    <a href="" class="prev">Prev Month</a>
    <a href="" class="next">Next Month</a>
  </div>
  <div class="body">
    <div class="lightgrey body-list">
      <ul>
        <li>MON</li>
        <li>TUE</li>
        <li>WED</li>
        <li>THU</li>
        <li>FRI</li>
        <li>SAT</li>
        <li>SUN</li>
      </ul>
    </div>
    <div class="darkgrey body-list">
      <ul class="days">
      </ul>
    </div>
  </div>
</div>
<script src="js/ui.js"></script>
</body>
</html>

 

　　ui.css

body{
    background:#f2f2f2;
    margin:40px;
}
*{
    margin:0;
    padding:0;
}
.calendar{
    width:450px;
    height:350px;
    background:#fff;
    box-shadow:0px 1px 1px rgba(0,0,0,0.1);
    margin: 10px auto;
}
.title{
    height:70px;
    border-bottom:1px solid rgba(0,0,0,0.1);
    text-align:center;
    position:relative;
}
.calendar-title{
    font-size:25px;
    font-family:arial;
    font-weight:bold;
    text-transform:uppercase;
    padding:14px 0 0 0;
}
.calendar-year{
    font-size:15px;
    font-family:arial;
    font-weight:normal;
}
.prev{
    text-indent:-9999px;
    position:absolute;
    left:0;
    top:0;
    width:60px;
    height:70px;
    background:url(‘../prev.png‘) no-repeat 50% 50%;
}
.next{
    text-indent:-9999px;
    position:absolute;
    right:0;
    top:0;
    width:60px;
    height:70px;
    background:url(‘../next.png‘) no-repeat 50% 50%;
}
.body{
    padding:10px 20px;
}
.body-list ul{
    width:100%;
    font-family:arial;
    font-weight:bold;
    font-size:14px;
}
.body-list ul li{
    width:14.28%;
    height:36px;
    line-height:36px;
    list-style-type:none;
    display:block;
    box-sizing:border-box;
    float:left;
    text-align:center;
}
.lightgrey{
    color:#a8a8a8;
}
.darkgrey{
    color:#565656;
}
.green{
    color:#6ac13c;
}
.greenbox{
    border:1px solid #6ac13c;
    background:#e9f8df;
}

　　ui.js

var Calendar=function(dom){
    var me=this;
    console.log(dom);
    var month_olympic = [31,29,31,30,31,30,31,31,30,31,30,31];
    var month_normal = [31,28,31,30,31,30,31,31,30,31,30,31];
    var month_name = ["January","Febrary","March","April","May","June","July","Auguest","September","October","November","December"];
    var holder = dom.querySelector(".days");
    var prev = dom.querySelector(".prev");
    var next = dom.querySelector(".next");
    var ctitle = dom.querySelector(".calendar-title");
    var cyear = dom.querySelector(".calendar-year");
            console.log(ctitle);
    var my_date = new Date();
    var my_year = my_date.getFullYear();
    var my_month = my_date.getMonth();
    var my_day = my_date.getDate();
    prev.onclick = function(e){
        e.preventDefault();
        my_month--;
        if(my_month<0){
            my_year--;
            my_month = 11;
        }
        me.refreshDate();
    }
    next.onclick = function(e){
        e.preventDefault();
        my_month++;
        if(my_month>11){
            my_year++;
            my_month = 0;
        }
        me.refreshDate();
    }
    me.refreshDate=function(){
        var str = "";
        var totalDay = daysMonth(my_month, my_year); //获取该月总天数
        var firstDay = dayStart(my_month, my_year); //获取该月第一天是星期几
        var myclass;
        for(var i=1; i<firstDay; i++){ 
            str += "<li></li>"; //为起始日之前的日期创建空白节点
        }
        for(var i=1; i<=totalDay; i++){
            if((i<my_day && my_year==my_date.getFullYear() && my_month==my_date.getMonth()) || my_year<my_date.getFullYear() || ( my_year==my_date.getFullYear() && my_month<my_date.getMonth())){ 
                myclass = " class=‘lightgrey‘"; //当该日期在今天之前时，以浅灰色字体显示
            }else if (i==my_day && my_year==my_date.getFullYear() && my_month==my_date.getMonth()){
                myclass = " class=‘green greenbox‘"; //当该日期是当天时，以绿色背景突出显示
            }else{
                myclass = " class=‘darkgrey‘"; //当该日期在今后之后时，以深灰字体显示
            }
            str += "<li"+myclass+">"+i+"</li>"; //创建日期节点
        }

        holder.innerHTML = str; //设置日期显示
        ctitle.innerHTML = month_name[my_month]; //设置英文月份显示
        cyear.innerHTML = my_year; //设置年份显示
    }
    //获取某年某月第一天是星期几
    function dayStart(month, year) {
        var tmpDate = new Date(year, month, 1);
        return (tmpDate.getDay());
    }

    //计算某年是不是闰年，通过求年份除以4的余数即可
    function daysMonth(month, year) {
        var tmp = year % 4;
        if (tmp == 0) {
            return (month_olympic[month]);
        } else {
            return (month_normal[month]);
        }
    }
    me.refreshDate();
}

if(document.querySelector(".calendar")){
    for(var i=0;i<document.querySelectorAll(".calendar").length;i++){
        new Calendar(document.querySelectorAll(".calendar")[i]);
    }
    
}

 

封装一个简单的UI组件


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