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var total = $("#readiness-result-number"), care = $("#readiness-personal"), work = $("#readiness-work"), family = $("#readiness-family"), study = $("#readiness-study"); function readinessTotal(care, work, family, study){ var hours = 168, careVal = care.val(), workVal = work.val(), familyVal = family.val(), studyVal = study.val(); if(careVal === ""){ careVal = 0; }else{ careVal = Math.abs(parseInt(careVal)); } if(workVal === ""){ workVal = 0; }else{ workVal = Math.abs(parseInt(workVal)); } if(familyVal === ""){ familyVal = 0; }else{ familyVal = Math.abs(parseInt(familyVal)); } if(studyVal === ""){ studyVal = 0; }else{ studyVal = Math.abs(parseInt(studyVal)); } return (hours - (careVal + workVal + familyVal + studyVal)); } care.add(work).add(family).add(study).on("input", function(){ total.text(readinessTotal(care, work, family, study)); }); total.text(readinessTotal(care, work, family, study));