有没有一种更清洁的方法可以在初始加载时停止React渲染？

Question

So my react class calls to a json response and then renders.

But as it stands, the class will render on initial load then render again when response has come back.

To get around this I have do this -

componentDidMount: function() {

        axios.get.......
          .then(res => {
            const jobs = res.data;
            this.setState({ jobs });
          });
  },

render: function () {
      if (Object.keys(this.state.jobs).length == 0)
      {

      }
      else {
          return (
              <div>
                  {this.state.jobs.data.map(function (ob) {
                      return <li key={ob.id}>{ob.name}</li>

                  })}

              </div>
          )
      }
      return null;
  }

});

Is there a nicer way to do this? without using an if statement?

Answer 1

React always has to render in the initial load. So you just need to render null like you already did. Code wise, maybe you can write

return this.state.jobs.data ? <YourTemplate /> : null;

which is cleaner.