Guide to capturing a screenshot of a specific HTML div element using Vue.js

For my web application, I am looking to provide users with the ability to choose from a variety of signature styles. Whenever a user selects a specific signature style, I would like to capture an image of that signature and save it on the server. I attempted to use the canvas2html library for this purpose, but unfortunately, it did not work as expected.

I have scoured through various Vue libraries in search of a solution that can take a picture of a particular element, rather than capturing a screenshot of the entire webpage. However, most options available only offer the functionality to capture screenshots of the entire webpage.

mounted() {
    // The element may not have been added to the DOM yet
    this.$nextTick(() => {
        // The element has definitely been added to the DOM
         // Is there any way to access the div element using `el` variable???
    html2canvas(document.getElementById('container')).
        then(function(canvas) {
        document.body.appendChild(canvas);
       });
       console.log(this.$el.textContent); // Represents the text inside the component.
        });
      }

Answer №1

I decided to give the html2canvas library a try and it appears to be working well.

To begin, make sure you have the library installed:

npm install html2canvas

Next, in your component:

async mounted () {
  let el = this.$refs.hello.$el; // Remember to call $el if your ref is a Vue component
  this.output = (await html2canvas(el)).toDataURL();
}

Check out the live example here

If you are already using vue-html2canvas, you can use the following code:

async mounted() {
  let el = this.$refs.hello.$el;
  let options = { type: "dataURL" };
  this.output = await this.$html2canvas(el, options);
}

See a live demonstration here

Please note that there seems to be an issue with babel when using vue-html2canvas. Refer to this solution for fixing the problem (in my case, I simply imported "regenerator-runtime/runtime").

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