function appelle_image() { var formData = new FormData( document.getElementById("donnees_enfant") ); var requete = new XMLHttpRequest(); requete.onreadystatechange = function() { if (this.readyState == 4 && this.status == 200) { document.getElementById('courbe').src = 'data:image/png;base64,'+(this.response); document.getElementById('sectioncourbe').style.display = "block"; } } requete.open("POST","courbe/b64",true) requete.send(formData) } function exporte_donnees() { var formData = new FormData( document.getElementById("donnees_enfant") ); var requete = new XMLHttpRequest(); requete.onreadystatechange = function() { if (this.readyState == 4 && this.status == 200) { document.getElementById('export').innerHTML = this.responseText; document.getElementById('sectionexport').style.display = "block"; } } requete.open("POST","export_donnees",true) requete.send(formData) }