js中yyyy-MM-dd格式的日期转换

1.转换为yyyy年MM月dd日

    var str = "2021-09-13";
    var reg =/(\d{4})\-(\d{2})\-(\d{2})/;
    var date = str.replace(reg,"$1年$2月$3日");
    alert(date);

  

 

  
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2.转换为yyyy/MM/dd/

	var str = "2021-09-13";
    var reg =/(\d{4})\-(\d{2})\-(\d{2})/;
    var date = str.replace(reg,"$1/$2/$3");
    alert(date);

  

 

  
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3.转换为yyyyMMdd

	var str = "2021-09-13";
    var reg =/(\d{4})\-(\d{2})\-(\d{2})/;
    var date = str.replace(reg,"$1$2$3");
    alert(date);

  

 

  
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文章来源: jiangwenxin.blog.csdn.net，作者：前端江太公，版权归原作者所有，如需转载，请联系作者。

原文链接：jiangwenxin.blog.csdn.net/article/details/120270378