CMD = $dicom:rs --url "http://ip:8080/dcm4chee-arc/aets/DCM4CHEE/rs" -r "&studyUID=uid1" -r "&studyUID=uid2" --query-ext "&includedefaults=false" --accept-ext="transfer-syntax=1.2.840.10008.1.2.4.70"

weasis://url_encode(CMD)

#js: var link = "weasis://" + encodeURIComponent(CMD)