Object_array_findIndex.html

<!DOCTYPE html>
<html>
    <head>
        <title>Replace Object value of matching employee id</title>
    </head>
<body>
<h2>Replace Object value of matching employee id</h2>
<script>
    let ObjArr = [
        {EmpId: 1, EmpName: 'Sam', Dept: 'Engg', Salary: 1000},
        {EmpId: 2, EmpName: 'Smith', Dept: 'HR', Salary: 2000},
        {EmpId: 3, EmpName: 'Denis', Dept: 'Engg', Salary: 4000},
        {EmpId: 4, EmpName: 'Danny', Dept: 'IT', Salary: 3000},
        {EmpId: 5, EmpName: 'David', Dept: 'HR', Salary: 4000},
        {EmpId: 6, EmpName: 'John', Dept: 'IT', Salary: 2000},
    ];

    // find index whose EmpName is 'David'
    const matchingIndex = ObjArr.findIndex(ele => ele.EmpName === 'David');
    console.log(matchingIndex);

    // Replace value the matching index using newObj
    newObj = {EmpId: 5, EmpName: 'David', Dept: 'EC', Salary: 14000};
    if (matchingIndex !== -1) {
      Object.assign(ObjArr[matchingIndex], newObj);
    }

    console.table(ObjArr);
</script>
</body>
</html> 