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One way to iterate through an array that is contained within an object in ReactJS without running into browser refresh errors is to use the JavaScript map() method. Here's an example:

class MyComponent extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      myObject: {
        myArray: ["apple", "banana", "orange"]
      }
    };
  }

  render() {
    return (
      <div>
        {this.state.myObject.myArray.map(item => {
          return <div key={item}>{item}</div>;
        })}
      </div>
    );
  }
}

In this example, we have an object called myObject that contains an array called myArray. We use the map() method to iterate through myArray and render a <div> element for each item in the array. The key prop is set to the current item in the iteration, which helps React to optimize rendering and avoid errors.

By using the map() method instead of a for loop, we can avoid potential errors that can occur when mutating state directly. Also, when rendering arrays in React, it's important to include a unique key for each item in the array to help React optimize rendering and avoid errors.