in src/main/resources/SLING-INF/libs/sling/resource-editor/static/js/properties/PropertyController.js [63:74]
$( "#node-content" ).on( "click", ".property-icon.glyphicon-save", function() {
var parentRow = $(this).parents(".row:first");
var key, value;
if (parentRow.hasClass('new-property')){
key = $('#newStringPropertyKey').val();
} else {
key = parentRow.find(".proplabel").attr("for");
}
value = parentRow.find(".form-control").val();
thisPropertyController.saveProperty(key, value);
});