removeAttributeNS(namespaceURI, localName) {
        const old = this.getAttributeNodeNS(namespaceURI, localName);
        if (old) {
            this.removeAttributeNode(old);
        }
    }
// get real attribute name,and remove it by removeAttributeNode
get real attribute name,and remove it by removeAttributeNode
get real attribute name and remove it by removeAttributeNode
removeAttributeNS(namespaceURI, localName) {
        const old = this.getAttributeNodeNS(namespaceURI, localName);
        if (old) {
            this.removeAttributeNode(old);
        }
    }
removeAttributeNS ( namespaceURI , localName ) { const old = this . getAttributeNodeNS ( namespaceURI , localName ) ; if ( old ) { this . removeAttributeNode ( old ) ; } }
get real attribute name,and remove it by removeAttributeNode
get real attribute name and remove it by removeAttributeNode