Using a forEach loop in a Vue JavaScript method

Question

Using a forEach loop in a Vue JavaScript method

I am having trouble adding multiple images and cannot seem to figure out how to make it work.

Here is the method I am using:

        imageAdd(e) {         
            e.forEach(function(e) {
            if (e.type == 'image/jpeg' || e.type == 'image/png')
            {
                this.images.push({
                    image: URL.createObjectURL(e),
                    imageData: e
                    })
            }
            })
   },

Every time I try to push to the images array, I get an error message saying

Cannot read property 'images' of undefined

, even though it has been defined in my data. What could be causing this issue?

javascript vue.js

Answer 1

Answer №1

Consider using arrow functions instead of regular ones to avoid issues with the this keyword:

 addImage(e) {         
            e.forEach((e) => {
            if (e.type == 'image/jpeg' || e.type == 'image/png')
            {
                this.images.push({
                    image: URL.createObjectURL(e),
                    imageData: e
                    })
            }
            })
   }

Answer 2

Consider using arrow functions instead of regular ones to avoid issues with the this keyword:

 addImage(e) {         
            e.forEach((e) => {
            if (e.type == 'image/jpeg' || e.type == 'image/png')
            {
                this.images.push({
                    image: URL.createObjectURL(e),
                    imageData: e
                    })
            }
            })
   }

Using a forEach loop in a Vue JavaScript method

Answer №1

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