纯javascript制作日历控件

2024-05-06 16:23:18

字体：大中小

来源：转载

供稿：网友

本文给大家分享的是使用纯javascript实现的日历控件的代码，笔者也是第一次写控件，摸索着前行，

以前要用到日历控件都是直接从网上下载一套源码来使用，心里一直有个梗，就是想自己动手写一个日历控件，最近刚好来了兴趣，时间上也允许，于是自己摸索写了一个，功能还算完善，界面就凑合了。可能最值得说的一点就是让input控件内部右边显示一个按钮，我是直接给input加了个背景，然后把input的边框去掉实现的。

这个是最初版的，再往后打算做出纯javascript版的，再往后打算用JQuery做一套。

<!doctype html>

<html>

<head>

<meta charset="utf-8">

<title>日历控件</title>

<style>

#date_text {

background-image: url(images/input.png);

background-repeat:no-repeat;

width: 198px;

height: 27px;

border:none;

padding-left:5px;

cursor:pointer;

}

#cal_body {

width: 198px;

height: auto;

overflow:hidden;

border: solid 1px #CCCCCC;

display: none;

position:absolute;

z-index:10;

}

.line {

width:100%;

height:26px;

float:left;

background-color:#0FF;

font-size:14px;

}

.cube {

float:left;

width:26px;

height:26px;

line-height:26px;

text-align:center;

margin-left:2px;

margin-bottom:2px;

}

.btn {

float:left;

background-color:#CCC;

margin-left:10px;

width:20px;

height:20px;

text-align:center;

line-height:20px;

border-radius:3px;

border:solid 1px;

margin-top:2px;

cursor:pointer;

}

.year_month {

float:left;

margin-left:10px;

width:90px;

height:19px;

text-align:center;

line-height:19px;

border-radius:6px;

}

.end_tag {

height:26px;

line-height:26px;

margin-left:10px;

}

</style>

<script>

Date.prototype.toFormatString = function(){

var result = this.getFullYear() + "-" + (this.getMonth() + 1) + "-" + this.getDate();

return result;

};

var today = new Date();

var month_big = new Array("1","3","5","7","8","10","12"); //包含所有大月的数组

var month_small = new Array("4","6","9","11"); //包含所有小月的数组

//判断数组array中是否包含元素obj的函数，包含则返回true，不包含则返回false

function array_contain(array, obj){

for (var i = 0; i < array.length; i++){

if (array[i] == obj)

return true;

}

return false;

}

//判断年份year是否为闰年，是闰年则返回true，否则返回false

function isLeapYear(year){

var a = year % 4;

var b = year % 100;

var c = year % 400;

if( ( (a == 0) && (b != 0) ) || (c == 0) ){

return true;

}

return false;

}

function hideCalendar(){

var calbody = document.getElementById("cal_body");

cal_body.style.display = "none";

}

function showCalendar(){

var calbody = document.getElementById("cal_body");

var style = getDefaultStyle(calbody,"display");

if(style == "none")

cal_body.style.display = "block";

if(style == "block")

cal_body.style.display = "none";

var date_text = document.getElementById("date_text");

var val = date_text.value;

init(val);

}

function init(val){

clearCube();

var temp_date;

var date_text = document.getElementById("date_text");

if(val == ""){

temp_date = today;

date_text.value = today.toFormatString();

}

else{

temp_date = new Date(val);

}

var year = temp_date.getFullYear();

var month = temp_date.getMonth() + 1;

var date = temp_date.getDate();

temp_date.setDate(1);

var start = temp_date.getDay() + 7;

var end;

if(array_contain(month_big, month)){

end = start + 31;

}

else if(array_contain(month_small, month)){

end = start + 30;

}

else{

if(isLeapYear(year)){

end = start + 29;

}

else{

end = start + 28;

}

}

for(var i = start; i < end; i++){

var cube = document.getElementsByClassName("cube").item(i);

cube.innerHTML = i - start + 1;

cube.style.cursor = "pointer";

cube.onmouseover = function(){

this.style.backgroundColor = '#0FF';

}

if(date == (i - start + 1))

cube.style.backgroundColor = '#0FF';

else{

cube.onmouseout = function(){

this.style.backgroundColor = '';

}

}

cube.onclick = function(){

date_text.value = year + "-" + month + "-" + this.innerHTML;

cal_body.style.display = "none";

}

}

document.getElementById("text_year").value = year;

document.getElementById("text_month").value = month;

}

function clearCube(){

for(var i=7; i < 49; i++){

var cube = document.getElementsByClassName("cube").item(i);

cube.innerHTML = "";

cube.style.backgroundColor = "";

}

}

function yearDown(){

if(isValidated()){

var old_year = parseInt(document.getElementById("text_year").value);

if(old_year > 1960){

var year = old_year - 1;

var month = parseInt(document.getElementById("text_month").value);

var val = year + "-" + month + "-" + 1;

init(val);

}

}

}

function yearUp(){

if(isValidated()){

var old_year = parseInt(document.getElementById("text_year").value);

if(old_year < 2050){

var year = old_year + 1;

var month = parseInt(document.getElementById("text_month").value);

var val = year + "-" + month + "-" + 1;

init(val);

}

}

}

function monthDown(){

if(isValidated()){

var old_month = parseInt(document.getElementById("text_month").value)

if(old_month > 1){

var year = parseInt(document.getElementById("text_year").value);

var month = old_month - 1;

var val = year + "-" + month + "-" + 1;

init(val);

}

else {

var year = parseInt(document.getElementById("text_year").value) - 1;

var month = 12;

var val = year + "-" + month + "-" + 1;

init(val);

}

}

}

function monthUp(){

if(isValidated()){

var old_month = parseInt(document.getElementById("text_month").value)

if(old_month < 12){

var year = parseInt(document.getElementById("text_year").value);

var month = parseInt(document.getElementById("text_month").value) + 1;

var val = year + "-" + month + "-" + 1;

init(val);

}

else {

var year = parseInt(document.getElementById("text_year").value) + 1;

var month = 1;

var val = year + "-" + month + "-" + 1;

init(val);

}

}

}

function isValidated(){

var year = document.getElementById("text_year").value;

var month = document.getElementById("text_month").value;

if(isNaN(year) || isNaN(month)){

alert("请输入正确的年份/月份");

return false;

}

else{

if(year%1 != 0 || month%1 != 0){

alert("请输入正确的年份/月份");

return false;

}

else{

year = parseInt(year);

if(year < 1960 || year > 2050){

alert("请输入1960~2050之间的年份！");

return false;

}

else if(month < 1 || month >12){

alert("请输入正确的月份！");

return false;

}

else{

return true;

}

}

}

}

function changed(){

if(isValidated()){

var year = document.getElementById("text_year").value;

var month = document.getElementById("text_month").value;

var val = year + "-" + month + "-" + 1;

init(val);

}

}

function getDefaultStyle(obj,attribute){

return obj.currentStyle?obj.currentStyle[attribute]:document.defaultView.getComputedStyle(obj,false)[attribute];

}

</script>

</head>

<body>

<div id="container">

<div id="input_bg"><input id="date_text" type="text" readonly onClick="showCalendar()" /></div>

<div id="cal_body">

<div class="line"><div class="btn" id="year_down" onClick="yearDown()">-</div><input class="year_month" id="text_year" value="2015" onChange="changed()"><div class="btn" id="year_up" onClick="yearUp()">+</div><span class="end_tag">年</span></div>

<div class="line"><div class="btn" id="month_down" onClick="monthDown()">-</div><input class="year_month" id="text_month" value="5" onChange="changed()"><div class="btn" id="month_up" onClick="monthUp()">+</div><span class="end_tag">月</span></div>

<div class="cube">日</div>

<div class="cube">一</div>

<div class="cube">二</div>

<div class="cube">三</div>

<div class="cube">四</div>

<div class="cube">五</div>

<div class="cube">六</div>

<div class="cube"></div>

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</div>

<div>

</body>

</html>