//yyyy-mm-dd格式:$1-$2-$3
//yyyy.mm.dd格式:$1.$2.$3
var r="20112233".replace(/^(\d{4})(\d{2})(\d{2})$/, "$1-$2-$3");
console.log(r);
js日期字符串yyyymmdd转换yyyy-mm-dd
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转载自blog.csdn.net/whw_hi/article/details/90202103
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