React

HTML

<div id="app"></div>

CSS

body {
  background: #20262E;
  padding: 20px;
  font-family: Helvetica;
}

#app {
  background: #fff;
  border-radius: 4px;
  padding: 20px;
  transition: all 0.2s;
}

li {
  margin: 8px 0;
}

h2 {
  font-weight: bold;
  margin-bottom: 15px;
}

.done {
  color: rgba(0, 0, 0, 0.3);
  text-decoration: line-through;
}

input {
  margin-right: 5px;
}

React

class App extends React.Component {

	remove = (input, value) => {
  	const stringVal = JSON.stringify(value);
    
    //const result = input
    //	.join("#")
    //  .replace(stringVal, "")
  //    .split("#");
  	const result = JSON.stringify(input)
      
    return result.replace(stringVal, "").split(",");
      
   
  }

  
  render() {
  	const input1 = [3,4,5,6];
    const input2 = [{ k: 1, v: "abc" }, {k:2, v: "pqr"}];
    
    return (
      <div>
        <div>
          <span> Test 1 </span>
          <span> Input: {JSON.stringify(input1)}  </span>
          <p> Output: {this.remove(input1, 5)} </p>
        </div>
         <div>
          <span> Test 2 </span>
          <span> Input: {JSON.stringify(input2)}  </span>
          <p> Output: {this.remove(input2, {k:2, v: "pqr"})} </p>
        </div>
      </div>
    )
  }
}

ReactDOM.render(<App />, document.querySelector("#app"))