+ Array.prototype.slice.call(form.elements).forEach(function (field) {
+ if (!field.name || field.disabled || ['submit', 'button'].indexOf(field.type) > -1) return;
+
+ if (['checkbox', 'radio'].indexOf(field.type) > -1 && !field.checked) return;
+ if (typeof field.value === 'undefined' || field.value === '') return;
+
+ // Default value for /search endpoint
+ if (field.name === 'dedupe' && (field.value === 1 || field.value === '1')) return;
+
+ params.set(field.name, field.value);
+ });
+
+ return params;
+ }
+
+ // https://developer.mozilla.org/en-US/docs/Web/Guide/HTML/HTML5/Constraint_validation
+ // doesn't support hidden fields, so we check those in an extra step
+ function validate_field(field) {
+ if (field.type === 'hidden') {
+ if (field.value.length) {
+ if (field.pattern && !field.value.match(field.pattern)) return false;
+ }
+ }
+ return field.checkValidity(); // for hidden field always true
+ }
+
+ function handle_submit(event) {
+ let form = event.target;
+
+ let allow_submit = true;
+
+ Array.prototype.slice.call(form.elements).forEach(function (field) {
+ if (!validate_field(field)) {
+ alert('Invalid input in ' + field.name);
+ allow_submit = false;
+ }
+ });
+
+ if (allow_submit) refresh_page(page, serialize_form(form));