Javascript 如何使用一年中的一周并将其用作图像源?
我想做的是根据日期显示一年中每个星期的jpg。有人知道为什么这样不行吗Javascript 如何使用一年中的一周并将其用作图像源?,javascript,Javascript,我想做的是根据日期显示一年中每个星期的jpg。有人知道为什么这样不行吗 Date.prototype.getWeek = function() { var onejan = new Date(this.getFullYear(),0,1); return Math.ceil((((this - onejan) / 86400000) + onejan.getDay()+1)/7); } var weekNumber = (new Da
Date.prototype.getWeek = function() {
var onejan = new Date(this.getFullYear(),0,1);
return Math.ceil((((this - onejan) / 86400000) + onejan.getDay()+1)/7);
}
var weekNumber = (new Date()).getWeek();
var test='<img src="C:/temp/ + weekNumber + .jpg"/>';
document.write(test);
Date.prototype.getWeek=function(){
var onejan=新日期(this.getFullYear(),0,1);
返回Math.ceil(((this-onejan)/86400000)+onejan.getDay()+1)/7);
}
var weekNumber=(新日期()).getWeek();
var检验='';
文件编写(测试);
这是一个获取周数的函数
function getWeekNumber(d) {
// Copy date so don't modify original
d = new Date(d);
d.setHours(0,0,0);
// Set to nearest Thursday: current date + 4 - current day number
// Make Sunday's day number 7
d.setDate(d.getDate() + 4 - (d.getDay()||7));
// Get first day of year
var yearStart = new Date(d.getFullYear(),0,1);
// Calculate full weeks to nearest Thursday
var weekNo = Math.ceil(( ( (d - yearStart) / 86400000) + 1)/7)
// Return array of year and week number
return weekNo;
}
学分:
使用上述函数获取数字并在脚本中使用
weekNumber = getWeekNumber(new Date());
var test='<img src="C:/temp/' + weekNumber + '.jpg"/>';
document.write(test);
weekNumber=getWeekNumber(新日期());
var检验='';
文件编写(测试);
这里有一个获取周数的函数
function getWeekNumber(d) {
// Copy date so don't modify original
d = new Date(d);
d.setHours(0,0,0);
// Set to nearest Thursday: current date + 4 - current day number
// Make Sunday's day number 7
d.setDate(d.getDate() + 4 - (d.getDay()||7));
// Get first day of year
var yearStart = new Date(d.getFullYear(),0,1);
// Calculate full weeks to nearest Thursday
var weekNo = Math.ceil(( ( (d - yearStart) / 86400000) + 1)/7)
// Return array of year and week number
return weekNo;
}
学分:
使用上述函数获取数字并在脚本中使用
weekNumber = getWeekNumber(new Date());
var test='<img src="C:/temp/' + weekNumber + '.jpg"/>';
document.write(test);
weekNumber=getWeekNumber(新日期());
var检验='';
文件编写(测试);