Ninja Tables Custom JS Snippets for many functionalities

ninja-table-snippets.js

// By default ninja tables keeps open each row for expanding
// You can add the following js then it will keep expanded one row at a time
var currentExpandRow = false;
 $table.on('expanded.ft.row', function (e, ft, selfArg) {
    if(currentExpandRow == selfArg) {
        return;
    }
    currentExpandRow = selfArg;
    ft.rows.collapse();
    selfArg.expand();
 });