The CSS background-clip property isn't taking effect in React when the background is dynamically updating

If you're ready to dive into live coding, check out this CodeSandBox I've set up for you here: https://codesandbox.io/s/0j99m3m50

Let me explain what's going on:

I have a React component with a state object that contains two properties (users, gradient) with specific values

this.state = {
    users: "developer",
    gradient: "linear-gradient(120deg, #f093fb 0%, #f5576c 100%)"
};

The goal is to show the user text clipped to a random gradient background using an h1 JSX tag. However, it doesn't seem to be working as expected. Why?

render() {
  const gradually = this.state.gradient;
  const userGradient = {
    background: `${gradually}`,
    WebkitBackgroundClip: "text !important",
    backgroundClip: "text !important",
    color: "transparent"
  };

  return (
    <div>
      <h1 style={userGradient} className="text">
        {this.state.users}
      </h1>
    </div>
  );
}

Answer №1

To trigger a repaint, it’s important to include a unique identifier (key) in your h1 tag. Consider using the same value as your gradually variable. You can also remove the !important declaration from your clips for better styling.

For updated changes in your sandbox, visit: https://codesandbox.io/s/css-background-clip-not-being-applied-n34o0

const gradually = this.state.gradient;
const userGradient = {
  background: `${gradually}`,
  WebkitBackgroundClip: "text", // Removed !important
  backgroundClip: "text", // Removed !important
  color: "transparent"
};

return (
  <div>
    <h1
      style={userGradient}
      className="text"
      key={gradually} // Add key
      >
      {this.state.users}
    </h1>
  </div>
);

Answer №2

The issue does not lie within JavaScript or React, but rather in the styling.

const userGradient = {
    background: `${gradually}`,
    WebkitBackgroundClip: "text !important",
    backgroundClip: "text !important",
    color: "transparent"   // <------------------ HERE
};

The problem arises from setting the color to "transparent", rendering it invisible. However, it is present and can be found in your live example (by right-clicking and inspecting the element). To resolve this, simply remove the line or change the color to a different value such as "#f00".

https://developer.mozilla.org/en-US/docs/Web/CSS/color

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