1. 程式人生 > >js 去掉字串最後一個逗號 “,”

js 去掉字串最後一個逗號 “,”

待處理字串:

var str = "1,2,3,4,5,";

方法1:slice()

alert(str.slice(0,-1))
alert("1,2,3,4,5,".slice(0,-1))

方法1:substring()
("1,2,3,4,5,".substring("1,2,3,4,5,".length-1)==',')?"1,2,3,4,5,".substring(0,"1,2,3,4,5,".length-1):"1,2,3,4,5,";
str=(str.substring(str.length-1)==',')?str.substring(0,str.length-1):str;