Analyze the implementation method of Vue calling Iframe method

In Vue, if we want to call the Iframe method, we need to pay attention to some details. Because Iframe nests the entire page in a frame, we need to find the correct way to access the DOM elements inside the Iframe. Below I will introduce you step by step how to implement Vue to call the Iframe method.

First, we need to create an Iframe tag in Vue. Suppose our Iframe code is as follows:

<iframe id="myIframe" src="./myIframe.html"></iframe>

We can see that the ID of the Iframe is "myIframe", and we can use this ID to access the DOM elements inside the Iframe in Vue.

Next, we need to define a method in Vue to get the DOM element inside the Iframe through the ID of the "myIframe" element. The code is as follows:

methods: {
    getIframeContent() {
      return document.getElementById('myIframe').contentWindow.document;
    },
}

This method returns a document object inside the Iframe. We can use this object to access the DOM elements in the Iframe content. Now we can call this method to get the DOM element inside the Iframe. The code is as follows:

created() {
    const iframeContent = this.getIframeContent();
}

In the Iframe, we define a method named "myFunction", which we want to call in Vue. The code is as follows:

<button @click="callMyFunction">Call myFunction</button>

When we click the "Call myFunction" button in Vue, we need to call the "myFunction" method inside the Iframe. The code is as follows:

methods: {
    callMyFunction() {
      const iframeContent = this.getIframeContent();
      iframeContent.getElementById('myFunction').contentWindow.myFunction();
    }
}

In the above code, we access the "myFunction" element through the document object inside the Iframe and call the contentWindow method of the element. This method returns the window object inside the Iframe. We can directly call the "myFunction" method on this object.

In this way, we have completed the process of calling the Iframe method in Vue. It should be noted that the Iframe must be located under the same domain name, otherwise access may fail due to cross-domain issues.

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