Add example using reactjs

[nerijusgood]

Hi,

I have been trying to use it with reactjs. Everytime I try to load it (on client side after content is loaded), I always get the Uncaught TypeError: this.canvas.getContext is not a function(…) error from Granim.js.

[pranaygp]

Could you please show me an example snippet of your code?

[nerijusgood]

Thats what I did. I even tried with event listener:

componentDidMount() {
    window.addEventListener('load', this.handleBgEffects.bind(this))
  }

  handleBgEffects() {
    const granimInstance = new Granim({
      element: '#canvas-basic',
      name: 'basic-gradient',
      direction: 'left-right',
      opacity: [1, 1],
      isPausedWhenNotInView: true,
      states: {
        'default-state': {
          gradients: [
            ['#AA076B', '#61045F'],
            ['#02AAB0', '#00CDAC'],
            ['#DA22FF', '#9733EE'],
          ],
        },
      },
    })
    granimInstance()
  }

[pranaygp]

I don't believe you need an event listener for this. You also shouldn't invoke the instance directly. If I'm right, it should be pretty straightforward.

Try something like this and let me know if it works:

componentDidMount() {
   this.handleBgEffects();
  }

  handleBgEffects() {
    this.granimInstance = new Granim({
      element: '#canvas-basic',
      name: 'basic-gradient',
      direction: 'left-right',
      opacity: [1, 1],
      isPausedWhenNotInView: true,
      states: {
        'default-state': {
          gradients: [
            ['#AA076B', '#61045F'],
            ['#02AAB0', '#00CDAC'],
            ['#DA22FF', '#9733EE'],
          ],
        },
      },
    })
  }

[nerijusgood]

Still same issue: Dynamic page loading failed TypeError: this.canvas.getContext is not a function(…)

[pranaygp]

Is this componentDidMount in the same class that is rendering '#canvas-basic'?

[sarcadass]

@nerijusgood Do you have a <canvas id="canvas-basic"></canvas> set in your HTML? I think the error is due to the fact that your options.element don't aim a <canvas> element.

[pranaygp]

@sarcadass It's a little different with React since he isn't directly writing HTML, rather using JSX and getting React to render these dynamically into the DOM

[sarcadass]

Yeah I know, I wasn't very clear in my last comment but is the element in the DOM when the Granim instance is intiated?

Le 15 sept. 2016 9:42 PM, "Pranay Prakash" notifications@github.com a écrit :

@sarcadass https://github.com/sarcadass It's a little different with React since he isn't directly writing HTML, rather using JSX and getting React to render these dynamically into the DOM

— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub https://github.com/sarcadass/granim.js/issues/16#issuecomment-247430906, or mute the thread https://github.com/notifications/unsubscribe-auth/ACVse-Db3tCMM8rNOn4nlGYjDZCPEBAsks5qqZ-6gaJpZM4J90xe .

[pranaygp]

@nerijusgood I'm gonna close this issue since it's not directly related to the codebase, but let's continue this conversation on gitter

[nerijusgood]

@sarcadass you are right - I actually needed specifically use it on canvas element. I actually used regular div.

It works perfect with <canvas id="canvas-basic"></canvas>

Thank you.