JavaScript千分符---正则实现

时间：2023-03-09 13:31:49
JavaScript千分符---正则实现

一般在JavaScript中实现千分符，是使用切割+连接一顿操作

这里尝试一下使用正则快速实现千分符-----支持小数

 let num0 = '12'

 let num1 = '123'

 let num2 = '1234'

 let num3 = '123456789'

 let num4 = '1234567890'

 let num5 = '12345678901'

 let num6 = '123456789012'

 let num7 = '1234567890123'

 let r0 = num0.replace(/(\d{1,3})(?=(\d{3})+(?:[$|.]))/g, '$1,')

 let r1 = num1.replace(/(\d{1,3})(?=(\d{3})+(?:[$|.]))/g, '$1,')

 let r2 = num2.replace(/(\d{1,3})(?=(\d{3})+(?:[$|.]))/g, '$1,')

 let r3 = num3.replace(/(\d{1,3})(?=(\d{3})+(?:[$|.]))/g, '$1,')

 let r4 = num4.replace(/(\d{1,3})(?=(\d{3})+(?:[$|.]))/g, '$1,')

 let r5 = num5.replace(/(\d{1,3})(?=(\d{3})+(?:[$|.]))/g, '$1,')

 let r6 = num6.replace(/(\d{1,3})(?=(\d{3})+(?:[$|.]))/g, '$1,')

 let r7 = num7.replace(/(\d{1,3})(?=(\d{3})+(?:[$|.]))/g, '$1,')

 console.log(r0) //

 console.log(r1) //

 console.log(r2) // 1,234

 console.log(r3) // 123,456,789

 console.log(r4) // 1,234,567,890

 console.log(r5) // 12,345,678,901

 console.log(r6) // 123,456,789,012

 console.log(r7) // 1,234,567,890,123

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