在按钮上单击增加日+1 [英] On button click increase day with +1

问题描述

如何点击按钮点击日期增加+1



右边没有按下我的按钮，我有这个代码

How could i increase button click date by +1 on click

Right not in my button click, i have this code

 function addNewDateFrom(){

    var numberToAddafter = 0;
    var toTime = new date();
    toTime.setDate(toTime.getDate() + numberToAddafter++);
}

var textNodeAddFreeTime = document.createTextNode("+");
var buttonCreateAddFreeTime = document.createElement("button");

buttonCreateAddFreeTime.appendChild(textNodeAddFreeTime);
 buttonCreateAddFreeTime.onclick = addNewDateFrom;

我第一次点击按钮获得1

但是第二次还是1？



为什么？

The first time i click the button gets 1
But second time still 1?

Why?

推荐答案

试试

try

var toTime = new Date();

function addNewDateFrom(){
    toTime.setDate(toTime.getDate()+1);
}

DEMO [ ^ ]

这真的是Java还是javascript？它看起来像后者。

Is this really Java or javascript? It looks like the latter to me.

function addNewDateFrom(){
    var numberToAddafter = 0;  // set number to add as 0
    var toTime = new date();   // get a new time
    toTime.setDate(toTime.getDate() + numberToAddafter++);  // add zero to the time
}

每次使用 numberToAddafter 中的新值（零）开始，因为这是一个局部变量，在将其添加到局部变量后将其递增为1时间，没有用处，因为变量会立即删除。

You start each time with a new (zero) value in numberToAddafter, and since this is a local variable, incrementing it to 1 after you add it to the time, serves no purpose, as the variable is immediately deleted.

试试这个

Hi,
try this

var toTime = new Date();
Var counter=0
function addNewDateFrom(){
    toTime.setDate(toTime.getDate()+counter);
counter=counter+1;
 }

-

这篇关于在按钮上单击增加日+1的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！