Answers for "delete html react"

react hooks delete item from array

import React, { useState } from "react";
import ReactDOM from "react-dom";

import "./styles.css";

const App = () => {
  const defaultList = [
    { name: "ItemOne" },
    { name: "ItemTwo" },
    { name: "ItemThree" }
  ];

  const [list, updateList] = useState(defaultList);

  const handleRemoveItem = (e) => {
   const name = e.target.getAttribute("name")
    updateList(list.filter(item => item.name !== name));
  };

  return (
    <div>
      {list.map(item => {
        return (
          <>
            <span name={item.name} onClick={handleRemoveItem}>
              x
            </span>
            <span>{item.name}</span>
          </>
        );
      })}
    </div>
  );
};

const rootElement = document.getElementById("root");
ReactDOM.render(<App />, rootElement);

react hooks delete item from array

import React, { useState } from "react";
import ReactDOM from "react-dom";

import "./styles.css";

const App = () => {
  const defaultList = [
    { name: "ItemOne" },
    { name: "ItemTwo" },
    { name: "ItemThree" }
  ];

  const [list, updateList] = useState(defaultList);

  const handleRemoveItem = (e) => {
   const name = e.target.getAttribute("name")
    updateList(list.filter(item => item.name !== name));
  };

  return (
    <div>
      {list.map(item => {
        return (
          <>
            <span name={item.name} onClick={handleRemoveItem}>
              x
            </span>
            <span>{item.name}</span>
          </>
        );
      })}
    </div>
  );
};

const rootElement = document.getElementById("root");
ReactDOM.render(<App />, rootElement);

how to delete a html tag element in react

const Row = function(props){
  const {checked, value, onChange, onChecked} = props;
  return (
    <div>
      <input 
        type="checkbox" 
        checked={checked}
        onChange={onChecked}
        />
      <input type ="text" value={value}  onChange={onChange}/>
    </div>
  );
}

class App extends React.Component {
  constructor(props){
    super(props);
    this.state = {
      rows: [
        {value: 'row1', checked: false},
        {value: 'row2', checked: true},
        {value: 'row3', checked: false},
      ]
    };
  }
  
  updateValue = (e, idx) => {
    const rows = [...this.state.rows];  // copy array because we don't want to mutate the previous one
    rows[idx].value = e.target.value;
    this.setState({
        rows,
    });
  }
  
  onChecked = (idx) => {
    const rows = [...this.state.rows];  // copy array because we don't want to mutate the previous one
    rows[idx].checked = !rows[idx].checked;
    this.setState({
        rows,
    });
  } 
  
  addRow = () => {
    const rows = [...this.state.rows, 
                  {value:'', checked: false}
                 ];
    this.setState({
        rows,
    });
  }
  
  deleteRows = () => {
    this.setState({
      rows: this.state.rows.filter(e => !e.checked)
    });
  }
 
  render(){
    return(
      <div>
        {this.state.rows.map((row, idx) => {
          return(
              <Row 
                key={idx} 
                value={row.value}
                checked={row.checked}
                onChange={(e) => this.updateValue(e, idx)} 
                onChecked={() => this.onChecked(idx)}
                /> 
            )
        })
        }
        <button onClick={this.addRow}>
          add 
        </button>
        <button onClick={this.deleteRows}>
          delete
        </button>
      </div>
    );
  }
}

ReactDOM.render(
  <App />,
  document.getElementById('app')
);

how to delete a html tag element in react

const Row = function(props){
  const {checked, value, onChange, onChecked} = props;
  return (
    <div>
      <input 
        type="checkbox" 
        checked={checked}
        onChange={onChecked}
        />
      <input type ="text" value={value}  onChange={onChange}/>
    </div>
  );
}

class App extends React.Component {
  constructor(props){
    super(props);
    this.state = {
      rows: [
        {value: 'row1', checked: false},
        {value: 'row2', checked: true},
        {value: 'row3', checked: false},
      ]
    };
  }
  
  updateValue = (e, idx) => {
    const rows = [...this.state.rows];  // copy array because we don't want to mutate the previous one
    rows[idx].value = e.target.value;
    this.setState({
        rows,
    });
  }
  
  onChecked = (idx) => {
    const rows = [...this.state.rows];  // copy array because we don't want to mutate the previous one
    rows[idx].checked = !rows[idx].checked;
    this.setState({
        rows,
    });
  } 
  
  addRow = () => {
    const rows = [...this.state.rows, 
                  {value:'', checked: false}
                 ];
    this.setState({
        rows,
    });
  }
  
  deleteRows = () => {
    this.setState({
      rows: this.state.rows.filter(e => !e.checked)
    });
  }
 
  render(){
    return(
      <div>
        {this.state.rows.map((row, idx) => {
          return(
              <Row 
                key={idx} 
                value={row.value}
                checked={row.checked}
                onChange={(e) => this.updateValue(e, idx)} 
                onChecked={() => this.onChecked(idx)}
                /> 
            )
        })
        }
        <button onClick={this.addRow}>
          add 
        </button>
        <button onClick={this.deleteRows}>
          delete
        </button>
      </div>
    );
  }
}

ReactDOM.render(
  <App />,
  document.getElementById('app')
);