JS获取数组小技巧

有如下数组

var infoArray = strTest.split(";");
var points2;
for (var i = 0; i < infoArray.length; i++) {
var info = infoArray[i];
points2 = info + "," + points2;
}
points2 = points2.substring(0, points2.length - 10);
var points3 = "[" + points2 + "]";

生成的数组JS获取报错，修改如下正常

var infoArray = strTest.split(";");
var str = "", points;
for (var i = 0; i < infoArray.length; i++) {
str += "," + infoArray[i];
}
points = eval("[" + str.substr(1) + "]");