filter-summernote-iframe.js

//js function to change iframe markup into a shortcode
function iFrameFilterInSummernote(contents){
        
        let rawContents = contents;
        let matches = rawContents.match(/<iframe(.+)<\/iframe>/);
        let ifamemarkup = Array.isArray(matches) ? matches[0] : '';
        let srcMatches = ifamemarkup.match(/src="(.*?)"/);
        let ifameSrc = Array.isArray(srcMatches) ? srcMatches[0] : '';
        
       return rawContents.replace(/<iframe(.+)<\/iframe>/, '{iframe} {vsrc}="'+ifameSrc.replace('src="','')+'{/iframe}');
       
    }


//php to render shotcode into iframe for frontend
function iFrameFilterInSummernoteAndRender($content){
    return str_replace(['{iframe}','{vsrc}','{/iframe}'],['<iframe','src',' frameborder="0" height="360" width="640"></iframe>'],$content);
}