JS去除,后面的内容

Question

如何去掉逗号后面的内容
'https:///2021/01/22/1611293852164303.jpeg,/2021/01/22/1611293868099676.jpeg' =>
'https:///2021/01/22/1611293852164303.jpeg'

Answer 1

str.split(',')[0]

Answer 2

正则版

// => https:///2021/01/22/1611293852164303.jpeg
str.replace(/,.*/, '')

Answer 3

/.*?(?=,)/.exec(str)[0]

str.match(/.*?(?=,)/)[0]