Saicharan67

 const restoreState = (canvas, ctx,  poping_obj, pushing_obj) => {

        if(poping_obj.list.length) {
            
            saveState(canvas, pushing_obj, true);
           
            var restore_state = poping_obj.list.pop();
       
            var temp_list = poping_obj.list
            if(poping_obj.name=='undo'){

Saicharan67

 const undo = (canvas , ctx) => {
        restoreState(canvas, ctx, {name:'undo',list:undo_list}, {name:'redo',list:redo_list});
    }
   


    const redo = (canvas , ctx) => {
        restoreState(canvas, ctx,  {name:'redo',list:redo_list},{name:'undo',list:undo_list});

    }

Saicharan67

const saveState = (canvas , list ,keep_redo) => {
        keep_redo = keep_redo || false;
        if(!keep_redo) {
          set_redo([]);
        }       
        if (list){
               if (list.name=='undo'){
                  set_undo(undo_list=>[...undo_list,canvas.toDataURL()]) 
               }
               else{

Saicharan67

const [redo_list,set_redo] = useState([])
const [undo_list,set_undo] = useState([])

Saicharan67

// Please allow same site scripting to use the script https://stackoverflow.com/a/50902950

Linkedin = {
    config: {
        scrollDelay: 3000,
        actionDelay: 5000,
        nextPageDelay: 5000,
        // set to -1 for no limit
        maxRequests: -1,
        totalRequestsSent: 0,