Js two-dimensional array is undefined after assignment-CodePudding

 function GAInitPop () {
Chrom=new Array (); 

For (var ik=0; Ik<10; Ik++) {//one dimension length is 
Chrom1 [ik]=randperm (7); 
The console. The log (Chrom (ik)); 
} 

The console. The log (Chrom); 
Return Chrom 
} 


//set up from 1 to integer array and random sequence arrangement of num 
The function randperm (num) {
Var randarr=new Array (); 
For (var ir=0; The ir & lt; Num. Ir + +) {
Randarr] [ir=ir + 1; 
} 
Randarr. Shuffle (); 
Return randarr; 
} 



//Array shuffle 
Array. The prototype. Shuffle=function () {
Var j, TMP, I; 
For (I=this. Length - 1. I> 0; I -) {
J=parseInt (Math. The random () * I); 
TMP=this [I]; 
This [I]=this [j]; 
This [j]=TMP; 
} 

} 

Chrom=GAInitPop (); 
The console. The log (Chrom)

I hope to get a 10 lines 7 column two-dimensional array
In a separate test can get, but in other features of web pages there will be only the last line of data, like the picture
why?

CodePudding user response:

Look at page other function code is also made from the Chrom global variables,
Is not recommended to js built-in objects, using the method of the prototype to add custom which may affect other functions with page code,
To shuffle into ordinary functions,