JSFiddle - React, Tailwind, and code Playground

HTML

<div id="test"></div>

JavaScript

var multiDimArray = {};
for(var x=0; x<10; x++){
    multiDimArray[x]=[];
    multiDimArray[x][0]=6;
}

for(var y=0; y<10; y++){
    $("#test").append(multiDimArray[y][0]);
}