var a = RegExp("123","g");
var b = "abc#123";
console.log(a.test(b));
a.lastIndex=0;
console.log(a.test(b));
a.lastIndex=0;
console.log(a.test(b));
a.lastIndex=0;
console.log(a.test(b));
var b = "abc#123";
console.log(a.test(b));
a.lastIndex=0;
console.log(a.test(b));
a.lastIndex=0;
console.log(a.test(b));
a.lastIndex=0;
console.log(a.test(b));
