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Runtime Domain - DevTools Protocol Version 0.1 (EdgeHTML)

  • Article

Runtime domain exposes JavaScript runtime by means of remote evaluation and mirror objects. Evaluation results are returned as mirror object that expose object type, string representation and unique identifier that can be used for further object reference. Original objects are maintained in memory unless they are either explicitly released.

Classification Members
Methods enable, disable, evaluate, callFunctionOn, getProperties
Events executionContextsCleared, exceptionThrown
Types ScriptId, RemoteObjectId, UnserializableValue, RemoteObject, PropertyDescriptor, CallArgument, ExecutionContextId, ExceptionDetails, Timestamp, CallFrame, StackTrace

Methods

enable

Enables reporting of the executionContextsCleared event.

 

disable

Disables reporting of the executionContextsCleared event.

 

evaluate

Evaluates expression on global object.

Parameters Type Details
expression string Expression to evaluate.
silent (optional) boolean In silent mode exceptions thrown during evaluation are not reported and do not pause execution. Overrides setPauseOnException state.
contextId (optional) ExecutionContextId Specifies in which execution context to perform evaluation. If the parameter is omitted the evaluation will be performed in the context of the inspected page.
returnByValue (optional) boolean Whether the result is expected to be a JSON object that should be sent by value.
awaitPromise (optional) boolean Whether execution should await for resulting value and return once awaited promise is resolved.
Returns Type Details
result RemoteObject Evaluation result.

callFunctionOn

Calls function with given declaration on the given object. Object group of the result is inherited from the target object.

Parameters Type Details
functionDeclaration string Declaration of the function to call.
objectId (optional) RemoteObjectId Identifier of the object to call function on. Either objectId or executionContextId should be specified. objectId must be from the Runtime.evaluate() function.
arguments (optional) CallArgument[] Call arguments. All call arguments must belong to the same JavaScript world as the target object.
silent (optional) boolean In silent mode exceptions thrown during evaluation are not reported and do not pause execution. Overrides setPauseOnException state.
returnByValue (optional) boolean Whether the result is expected to be a JSON object which should be sent by value.
awaitPromise (optional) boolean Whether execution should await for resulting value and return once awaited promise is resolved.
Returns Type Details
result RemoteObject Call result.

getProperties

Returns properties of a given object. Object group of the result is inherited from the target object.

Parameters Type Details
objectId RemoteObjectId Identifier of the object to return properties for. objectId must be from the Debugger.evaluateOnCallFrame() function.
ownProperties (optional) boolean If true, returns properties belonging only to the element itself, not to its prototype chain.
accessorPropertiesOnly (optional) boolean Experimental. If true, returns accessor properties (with getter/setter) only; internal properties are not returned either.
Returns Type Details
result PropertyDescriptor[] Object properties.

Events

executionContextsCleared

Issued when all executionContexts were cleared in browser.

 

exceptionThrown

Issued when exception was thrown and unhandled.

Parameters Type Details
timestamp Timestamp Timestamp of the exception.
exceptionDetails ExceptionDetails  

Types

ScriptId string

Unique script identifier.

 

RemoteObjectId string

Unique object identifier.

 

UnserializableValue string

Primitive value which cannot be JSON-stringified.

Allowed Values

Infinity, NaN, -Infinity, -0

RemoteObject object

Mirror object referencing original JavaScript object.

Properties Type Details
type string Object type. Allowed values: object, function, undefined, string, number, boolean, and symbol
subtype (optional) string Object subtype hint. Specified for object type values only. Allowed values: null, error, and promise
className (optional) string Object class (constructor) name. Specified for object type values only.
value (optional) any Remote object value in case of primitive values or JSON values (if it was requested).
unserializableValue (optional) UnserializableValue Primitive value which can not be JSON-stringified does not have value, but gets this property.
description (optional) string String representation of the object.
objectId (optional) RemoteObjectId Unique object identifier (for non-primitive values).
msDebuggerPropertyId (optional) string Experimental. Microsoft: The associated debugger property ID for this object.

PropertyDescriptor object

Object property descriptor.

Properties Type Details
name string Property name or symbol description.
value (optional) RemoteObject The value associated with the property.
writable (optional) boolean True if the value associated with the property may be changed (data descriptors only).
get (optional) RemoteObject A function which serves as a getter for the property, or undefined if there is no getter (accessor descriptors only).
set (optional) RemoteObject A function which serves as a setter for the property, or undefined if there is no setter (accessor descriptors only).
configurable boolean True if the type of this property descriptor may be changed and if the property may be deleted from the corresponding object.
enumerable boolean True if this property shows up during enumeration of the properties on the corresponding object.
wasThrown (optional) boolean True if the result was thrown during the evaluation.
isOwn (optional) boolean True if the property is owned for the object.
msReturnValue (optional) boolean Experimental. Microsoft: True if the property is a return value.
symbol (optional) RemoteObject Property symbol object, if the property is of the symbol type.

CallArgument object

Represents function call argument. Either remote object ID value, unserializable primitive value or neither of (for undefined) them should be specified.

Properties Type Details
value (optional) any Primitive value or serializable javascript object.
unserializableValue (optional) UnserializableValue Primitive value which can not be JSON-stringified.
objectId (optional) RemoteObjectId Remote object handle.

ExecutionContextId integer

ID of an execution context.

 

ExceptionDetails object

Detailed information about exception (or error) that was thrown during script compilation or execution.

Properties Type Details
exceptionId integer Exception ID.
text string Exception text, which should be used together with exception object when available.
lineNumber integer Line number of the exception location (0-based).
columnNumber integer Column number of the exception location (0-based).
scriptId (optional) ScriptId Script ID of the exception location.
url (optional) string URL of the exception location, to be used when the script was not reported.
stackTrace (optional) StackTrace JavaScript stack trace if available.
exception (optional) RemoteObject Exception object if available.
executionContextId (optional) ExecutionContextId Identifier of the context where exception happened.

Timestamp integer

Number of milliseconds since epoch.

 

CallFrame object

Stack entry for runtime errors and assertions.

Properties Type Details
functionName string JavaScript function name.
scriptId ScriptId JavaScript script ID.
url string JavaScript script name or url.
lineNumber integer JavaScript script line number (0-based).
columnNumber integer JavaScript script column number (0-based).

StackTrace object

Call frames for assertions or error messages.

Properties Type Details
description (optional) string String label of this stack trace. For async traces this may be a name of the function that initiated the async call.
callFrames CallFrame[] JavaScript function name.
parent (optional) StackTrace Asynchronous JavaScript stack trace that preceded this stack, if available.