Tag: callback

What is Callback Hell?

Pradeep Maurya
callbacks-callback-hell-promise

addition(2,function(addRes,err){ if(!err){ Subtract(addRes,function(subRes,err){ if(!err){ multiplication(subRes,function(mulRes,err){ console.log(mulRes); }); } }); } }); function addition(val,callback){ callback(val+5,false); } function Subtract(val,callback){ callback(val-3,false); } function multiplication(val,callback){ callback(val*5,false); } In the above code, there is three operation addition, Subtract and multiplication. Which is using a callback…

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