javascript for various functions

assets/js/app/user.js

@@ -0,0 +1,21 @@
+export function createSignatureBlock() {
+    pad = new SignaturePad(document.getElementById('signature_pad'));
+    const ratio =  Math.max(window.devicePixelRatio || 1, 1);
+    canvas.width = canvas.offsetWidth * ratio;
+    canvas.height = canvas.offsetHeight * ratio;
+    canvas.getContext("2d").scale(ratio, ratio);
+    //pad.clear(); // otherwise isEmpty() might return incorrect value
+}
+
+export function clearSignatureBlock() {
+    //const pad = new SignaturePad(document.getElementById('signature_pad'));
+    pad.clear();
+}
+
+export function saveSignatureBlock() {
+    //const pad = new SignaturePad(document.getElementById('signature_pad'));
+    const data = pad.toData();
+    document.getElementById('signature').value = data;
+
+    return true;
+}