从字符串变量中检索数组值

Question

我在JQuery的字符串变量中有一个数组名称。 我想从此字符串变量获取数组值。

var f_1=["1","2","3","4"];
var f_2=["1","2","3","4"];
var f_3=["1","two","3","4",];
var f_4=["fname","lname","true","false","1"];       
var f_array=["f_1","f_2"];
populate_array();
function populate_array(){
        var x=f_array[0];
        var num= [];
        num=new Array(x).slice(0);          
        console.log("array values "+Array(f_1).slice(0));           
        for(var i=1;i<4;i++){               
            console.log(num[i]+"   "+f_array[0][i]);
        }
}

我得到num的未定义和f_array [0] [i]的_，。 如何从f_array [0]分配f_1的值？

Answer 1

请记住，这并不是一件很明智的事情，但是eval可以解决您的问题

var f_1=["1","2","3","4"];
var f_2=["1","2","3","4"];
var f_3=["1","two","3","4",];
var f_4=["fname","lname","true","false","1"];       
var f_array=["f_1","f_2"];

x=eval(f_array[0])
y=eval(f_array[1])
console.log(x)
console.log(y)