React：如何重新渲染如果调用函数

Question

I am working on project , where I am updating the url . Actually It working fine when I click on next button but I want to re-render application when function is invoked . I am new to ReactJS , Could some one please help me how to solve this problem .

I am sorry I am not native speaker , I am sorry if I made mistake in English grammer . Thanks

Displaying data through this URL Function

urlParams() {
 return `http://localhost:3001/meetups?filter[limit]=${(this.state.Item)}&&
filter[skip]=${this.state.skip}
&&filter[order]=${this.state.sortedData}`;
  }

Full Component Code

        class Example extends React.Component {
  constructor(props) {
    super(props);

    this.state = {
      Item: 5,
      skip: 0
    }

    this.handleClick = this.handleClick.bind(this);
  }

  urlParams() {
    return `http://localhost:3001/meetups?filter[limit]=${(this.state.Item)}&&filter[skip]=${this.state.skip}`
  }

  handleClick() {
    this.setState({skip: this.state.skip + 1})
  }

  render() {
    return (
      <div>
        <a href={this.urlParams()}>Example link</a>
        <pre>{this.urlParams()}</pre>
        <button onClick={this.handleClick}>Change link</button>
      </div>
    )
  }
}


ReactDOM.render(<Example/>, document.querySelector('div#my-example' ))

Answer 1

You can force a rerender of your component by calling:

this.forceUpdate();

However, you have to be careful not to enter a never-ending update cycle.

The usual (recommended) way to rerender is through the necessity of changing your state using setState .

EDIT

I think want you need is to call getData once you have clicked the table header:

getSortedData=()=>{
  console.log("hello clicked")
  this.setState({
    sortedData:'companyName'
  })
  // now invoke getdata which will refresh the data:
  this.getData()
}