reactjs - Replace part of string with tag in JSX

Question

I'm trying to replace parts of a string with JSX tags, like so:

render: function() {
    result = this.props.text.replace(":",<div className="spacer"></div>);
    return (
         <div>        
             {result}
         <div>        
    );
}

But given that this.props.text is Lorem : ipsum, it results in

<div>
    Lorem [object Object] ipsum.
</div>

Is there a way to solve this or another way to replace parts of a string with JSX tags?

question from:https://stackoverflow.com/questions/30474506/replace-part-of-string-with-tag-in-jsx

Answer 1

When you pass a JSX element to replace() as the second argument, that element is converted to a string because replace() expects a string as a second argument. What you need to do is convert your string to an array of strings and JSX elements. So your result variable should contain something like ['Lorem ', <div className="spacer"></div>, ' ipsum'].

Something like this:

function flatMap(array, fn) {
  var result = [];
  for (var i = 0; i < array.length; i++) {
    var mapping = fn(array[i]);
    result = result.concat(mapping);
  }
  return result;
}

var Comp = React.createClass({
  render: function () {
    var result = 'Lorem : ipsum';
    result = flatMap(result.split(':'), function (part) {
      return [part, <div>spacer</div>];
    });
    // Remove the last spacer
    result.pop();
    return (
      <div>        
        {result}
      </div>
    );
  }
});