function returns array formatted random n x m data map.

nXmGen.js

/*nXmGen.js
*
*    Copyright (c) 2017 Yuji SODE <yuji.sode@gmail.com>
*
*    This software is released under the MIT License.
*/
//function returns array formatted random n x m data map.
/*
* e.g., random 3 x 3 data map = ["010","111","101"]
* - n: data map width
* - [optional] m: data map height
* - [optional] max: max value of data map
*/
function nXmGen(n,m,max){
    m=(m!=undefined)?m:n;
    max=(max!=undefined)?max:1;
    m=/^[1-9](?:[0-9]+)?$/.test(m)?m:n;
    max=/^[0-9]$/.test(max)?max:1;
    var i=0,j=0,arr=[];
    //width: n; height: m
    while(i<m){
        j=0,arr[i]='';
        while(j<n){
            arr[i]+=Math.floor((max+1)*Math.random());
            j+=1;
        }
        i+=1;
    }
    return arr;
}
/*
*          MIT License
*
* Copyright (c) 2017 Yuji Sode
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:

* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/