Checking if the image was loaded

checking-image.js

function checkIfImageExist(src, cb) {

    var img = new Image();

    img.onload = function() {
        cb(null)
    }

    img.onerror = function(e) {
        cb(new Error('Image ' + src + ' doesnt exist'))
    }

    img.src = src

}


document.querySelectorAll(`.logo-${size}`).forEach((item) => {
    let backgroundImage = window.getComputedStyle(item)['backgroundImage']
    backgroundImage = backgroundImage.replace(/url\("/g, '').replace(/"\)/g, '')

    if (backgroundImage.indexOf('data:') !== -1) {
        return
    }

    checkIfImageExist(backgroundImage, (err) => {

        if (err) {
            let div = document.createElement('div')
            div.innerHTML = backgroundImage;
            body.append(div)
        }

    })

})