求一个正则表达式，字符匹配

Question

[vspae](?:1|0\.5)?(,[vspae](?:1|0\.5)?)*

Answer 1

function che(str){
   var a=str.split(",")
   var retun=true;
   for(var i=0;i<a.length;i++){
if(/^[vspae]((0\.5)|1)$/.test(a[i])){
    
}else{
    return false
}
   }
   return true;
}
alert(che("e1"))
alert(che("e2"))
alert(che("e0.5"))
alert(che("e1.5"))
alert(che("e0.5,e1"))

Answer 2

string pattern1 = @"^([vspae](1|0\.5),)*[vspae](1|0\.5)$";

Answer 3

string pattern1 = @"^([vspae](1|0\.5),)*?[vspae](1|0\.5)$";

Answer 4

alert(/^[vspae]((0\.5)|1)(,[vspae]((0\.5)|1))*$/.test("e0.5,e1"))
alert(/^[vspae]((0\.5)|1)(,[vspae]((0\.5)|1))*$/.test("e0.5"))

Answer 5

恩~忘了加头尾~~很重要~~
^[vspae](?:1|0\.5)?(?:,[vspae](?:1|0\.5)?)*$

Answer 6

逗号后面可以跟空格吗？var re = /^[vspae](?:1|0\.5)(?:,\s*[vspae](?:1|0\.5)?)*$/