Question

我有这段代码：

CODE JS：

using namespace

输入值为var completeD = start.format("YYYY/MM/DD HH:mm"); var dt = new Date(completeD); console.log(dt) //here it's display Tue Feb 09 2016 02:00:00 GMT+0200 (EET) console.log(dt.getHours() + ":" + dt.getMinutes()); //the input value is 2:0，应为2:0

如何在前面添加0？如果它是必要的。

提前致谢！

Answer 1

简单的方法是编写一个函数来纠正字符串：

merge into table1 t
using (select a.table1id, b.branch
         from table1 a                              
           inner join table2 b                        
            on a.table1id = b.table2id                    
         where (b.asd = '1' or b.asd = '3')  
           and b.branch <> a.branch 
       ) as M
 on t.table1id = m.table1id
when matched
  then update set t.branch = m.branch

Answer 2

使用pad函数

function pad(var value) {
    if(value < 10) {
        return '0' + value;
    } else {
        return value;
    }
}

现在你可以使用它

 console.log( pad( dt.getHours() ) + ":" + pad ( dt.getMinutes()) ); // outputs 02:00

Answer 3

您可以尝试:(点击运行代码段以在控制台中查看结果）

＆＃13;

  
var dt = new Date();
console.log(dt)   //here it's display Tue Feb 09 2016 02:00:00 GMT+0200 (EET) 
var hours = dt.getHours();
var minute = dt.getMinutes();
  
if(hours.toString().length == 1 ) hours = "0"+hours;
if(minute.toString().length == 1 ) minute = "0"+minute;
console.log(hours + ":" + minute); //the input value is 2:0
alert(hours + ":" + minute) ;

＆＃13;

Answer 4

您可以使用正则表达式：

var dt = 'Tue Feb 09 2016 02:00:00 GMT+0530 (India Standard Time)';//new Date();
document.querySelector('pre').innerHTML = dt.match(/(\d\d:\d\d)/g)[0];

<pre></pre>

如何更改日期格式并在前面添加0

4 个答案: