To call a function inside a render in React, use the following code:

Example

                                        

import React, { Component, PropTypes } from 'react';

export default class PatientTable extends Component {
      constructor(props) {
        super(props);
        this.state = {
         checking:false
      };
        this.renderIcon = this.renderIcon.bind(this);
  }

  renderIcon(){
    console.log("came here")
    return(
      <div>Function called</div>
    )
  }

  render() {

   return (
       <div className="patient-container">

       {this.renderIcon}      

      </div>
   );
 }
}

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