If you are looking for a responsive gridster, you can try this

[johe-a]

My English is poor, this is my first time to open an issue.
If you want a responsive gridster, you can try this :

function girdsterResize ( ){
        //use the resize_widget_dimensions method, the variable baseDiemensionWidth is measured by yourself according to the container of gridster
        gridsterObj.resize_widget_dimensions({
            widget_base_dimensions: [baseDiemensionWidth, 100]
        });
    };

I found this answer from the Issues, but I also found it not work when I change to another router( i am using Angular to do a SPA)
After I debug my programmer , i found the solution to resolve this question.
At the source code of jquery.gridster.js, the method add_style_tag has an if statement

if (!document.getElementById(cssID)) 

Gridster.js create the <style> and insert into the ,if you change to another router , the statement always be false.
By remove the element which has ID called cssID before the statement, I realize a responsive gridster:

$('#'+cssID).remove();