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Added total items count #1

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23d7ff8
Added total items count
aman1106 Apr 10, 2020
74d1c86
Removed warning
aman1106 Apr 18, 2020
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21 changes: 16 additions & 5 deletions src/App.js
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Original file line number Diff line number Diff line change
Expand Up @@ -9,36 +9,46 @@ class App extends Component {
{ id: 2, value: 0 },
{ id: 3, value: 0 },
{ id: 4, value: 0 }
]
],
total: 0
};

handleIncrement = counter => {
const counters = [...this.state.counters];
const index = counters.indexOf(counter);
counters[index] = { ...counters[index] };
counters[index].value++;
this.setState({ counters });
let total = this.state.total;
total++;
this.setState({ counters, total });
};

handleDecrement = counter => {
const counters = [...this.state.counters];
const index = counters.indexOf(counter);
counters[index] = { ...counters[index] };
counters[index].value--;
this.setState({ counters });
let total = this.state.total;
total--;
this.setState({ counters, total });
};

handleReset = () => {
const counters = this.state.counters.map(c => {
c.value = 0;
return c;
});
this.setState({ counters });
let total = 0;
this.setState({ counters, total });
};

handleDelete = counterId => {
const counters = this.state.counters.filter(c => c.id !== counterId);
this.setState({ counters });
let total = 0;
counters.forEach(c => {
total = total + c.value;
})
Comment on lines +47 to +50
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@bikkimahato bikkimahato Aug 24, 2021 •
edited
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We can use reduce method also.
const total = counters.reduce((acc,el)=>acc+el.value,0);

this.setState({ counters, total });
};

handleRestart = () => {
Expand All @@ -54,6 +64,7 @@ class App extends Component {
<main className="container">
<Counters
counters={this.state.counters}
total={this.state.total}
onReset={this.handleReset}
onIncrement={this.handleIncrement}
onDecrement={this.handleDecrement}
Expand Down
5 changes: 5 additions & 0 deletions src/components/counters.jsx
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
import React, { Component } from "react";
import Counter from "./counter";
import Total from "./total";

class Counters extends Component {
render() {
Expand All @@ -9,6 +10,7 @@ class Counters extends Component {
onDelete,
onDecrement,
counters,
total,
onRestart
} = this.props;
return (
Expand Down Expand Up @@ -36,6 +38,9 @@ class Counters extends Component {
onDelete={onDelete}
/>
))}
<Total
value={total}
/>
</div>
);
}
Expand Down
18 changes: 18 additions & 0 deletions src/components/total.jsx
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Original file line number Diff line number Diff line change
@@ -0,0 +1,18 @@
import React from 'react';

const Total = ({value}) => (
<div className="row">
<div className="col-md-1">
<span style={{ fontSize: 24 }} className="badge m-2 badge-">
Total
</span>
</div>
<div className="col-md-1">
<span style={{ fontSize: 24 }} className="badge m-2 badge-">
{value}
</span>
</div>
</div>
);

export default Total;