querySelector method
Executes querySelector on a given node.
nodeId Id of the node to query upon.
selector Selector string.
Returns: Query selector result.
Implementation
Future<NodeId> querySelector(NodeId nodeId, String selector) async {
var result = await _client.send('DOM.querySelector', {
'nodeId': nodeId,
'selector': selector,
});
return NodeId.fromJson(result['nodeId'] as int);
}