svg_to_base64.js

getChartsContents () {

    const domEls = jQuery('.oct-chart svg') // acesso todos os SVG da pagina
    const quantity   = domEls.length
    let i = 0
    let contents = []

    for (i; i < quantity; i++) { // neste loop pegarei o conteudo dos SVG e transformarei para Base64
        /**
        * Serialize SVG to String
        */
        let svg = (new XMLSerializer).serializeToString(domEls[i])

        /**
        * This will ensure non-Latin chars are properly escaped
        */
        svg = unescape(encodeURIComponent(svg))

        /**
        * Add to array to be returned encoded as Base64
        */
        contents.unshift(window.btoa(svg))
    }

    return contents
}