diff --git a/mix/qml/LogsPane.qml b/mix/qml/LogsPane.qml
index 9d03b2af2..bef616f21 100644
--- a/mix/qml/LogsPane.qml
+++ b/mix/qml/LogsPane.qml
@@ -205,7 +205,7 @@ Rectangle
 			headerVisible : false
 			onDoubleClicked:
 			{
-				var log = logsModel.get((logsTable.currentRow));
+				var log = logsModel.get(logsTable.currentRow);
 				if (log)
 					appContext.toClipboard(log.type + "\t" + log.level + "\t" + log.date + "\t" + log.content);
 			}
diff --git a/mix/qml/WebPreview.qml b/mix/qml/WebPreview.qml
index ba2975453..34dc7c698 100644
--- a/mix/qml/WebPreview.qml
+++ b/mix/qml/WebPreview.qml
@@ -219,6 +219,14 @@ Item {
 					focus: true
 				}
 
+				Rectangle
+				{
+					width: 1
+					height: parent.height - 10
+					color: WebPreviewStyle.general.separatorColor
+					anchors.verticalCenter: parent.verticalCenter
+				}
+
 				CheckBox {
 					id: autoReloadOnSave
 					checked: true
@@ -231,15 +239,56 @@ Item {
 					}
 					focus: true
 				}
+
+				Rectangle
+				{
+					width: 1
+					height: parent.height - 10
+					color: WebPreviewStyle.general.separatorColor
+					anchors.verticalCenter: parent.verticalCenter
+				}
+
+				Button
+				{
+					height: 28
+					anchors.verticalCenter: parent.verticalCenter
+					action: expressionAction
+					iconSource: "qrc:/qml/img/console.png"
+				}
+
+				Action {
+					id: expressionAction
+					tooltip: qsTr("Expressions")
+					onTriggered:
+					{
+						expressionPanel.visible = !expressionPanel.visible;
+						if (expressionPanel.visible)
+						{
+							webView.width = webView.parent.width - 350
+							expressionInput.forceActiveFocus();
+						}
+						else
+							webView.width = webView.parent.width
+					}
+				}
 			}
 		}
 
 		Rectangle
+		{
+			Layout.preferredHeight: 1
+			Layout.preferredWidth: parent.width
+			color: WebPreviewStyle.general.separatorColor
+		}
+
+		SplitView
 		{
 			Layout.preferredWidth: parent.width
 			Layout.fillHeight: true
 			WebEngineView {
-				anchors.fill: parent
+				Layout.fillHeight: true
+				width: parent.width
+				Layout.preferredWidth: parent.width
 				id: webView
 				experimental.settings.localContentCanAccessRemoteUrls: true
 				onJavaScriptConsoleMessage: {
@@ -254,6 +303,123 @@ Item {
 					}
 				}
 			}
+
+			Column {
+				id: expressionPanel
+				width: 350
+				Layout.preferredWidth: 350
+				Layout.fillHeight: true
+				spacing: 0
+				visible: false
+				function addExpression()
+				{
+					if (expressionInput.text === "")
+						return;
+					expressionInput.history.unshift(expressionInput.text);
+					expressionInput.index = -1;
+					webView.runJavaScript("executeJavaScript(\"" + expressionInput.text.replace(/"/g, '\\"') + "\")", function(result) {
+						resultTextArea.text = "> " + result + "\n\n" + resultTextArea.text;
+						expressionInput.text = "";
+					});
+				}
+
+				Row
+				{
+					id: rowConsole
+					width: parent.width
+					Button
+					{
+						height: 22
+						width: 22
+						action: clearAction
+						iconSource: "qrc:/qml/img/broom.png"
+					}
+
+					Action {
+						id: clearAction
+						enabled: resultTextArea.text !== ""
+						tooltip: qsTr("Clear")
+						onTriggered: {
+							resultTextArea.text = "";
+						}
+					}
+
+					DefaultTextField {
+						id: expressionInput
+						width: parent.width - 15
+						height: 20
+						font.family: WebPreviewStyle.general.fontName
+						font.italic: true
+						font.pointSize: Style.absoluteSize(-3)
+						anchors.verticalCenter: parent.verticalCenter
+
+						property var history: []
+						property int index: -1
+
+						function displayCache(incr)
+						{
+							index = index + incr;
+							if (history.length - 1 < index || index < 0)
+							{
+								if (incr === 1)
+									index = 0;
+								else
+									index = history.length - 1;
+							}
+							expressionInput.text = history[index];
+						}
+
+						Keys.onDownPressed: {
+							displayCache(1);
+						}
+
+						Keys.onUpPressed: {
+							displayCache(-1);
+						}
+
+						Keys.onEnterPressed:
+						{
+							expressionPanel.addExpression();
+						}
+
+						Keys.onReturnPressed:
+						{
+							expressionPanel.addExpression();
+						}
+
+						onFocusChanged:
+						{
+							if (!focus && text == "")
+								text = qsTr("Expression");
+							if (focus && text === qsTr("Expression"))
+								text = "";
+						}
+
+						style: TextFieldStyle {
+							background: Rectangle {
+								color: "transparent"
+							}
+						}
+					}
+				}
+
+				TextArea {
+					Layout.fillHeight: true
+					height: parent.height - rowConsole.height
+					readOnly: true
+					id: resultTextArea
+					width: expressionPanel.width
+					wrapMode: Text.Wrap
+					font.family: WebPreviewStyle.general.fontName
+					font.pointSize: Style.absoluteSize(-3)
+					backgroundVisible: true
+					style: TextAreaStyle {
+						backgroundColor: "#f0f0f0"
+					}
+				}
+			}
 		}
 	}
 }
+
+
diff --git a/mix/qml/WebPreviewStyle.qml b/mix/qml/WebPreviewStyle.qml
index 551f5a446..231bbe16c 100644
--- a/mix/qml/WebPreviewStyle.qml
+++ b/mix/qml/WebPreviewStyle.qml
@@ -10,5 +10,7 @@ QtObject {
 
 	property QtObject general: QtObject {
 		property string headerBackgroundColor: "#f0f0f0"
+		property string separatorColor: "#808080"
+		property string fontName: "sans serif"
 	}
 }
diff --git a/mix/qml/html/WebContainer.html b/mix/qml/html/WebContainer.html
index e2f97fd86..3cddda377 100644
--- a/mix/qml/html/WebContainer.html
+++ b/mix/qml/html/WebContainer.html
@@ -17,7 +17,7 @@ reloadPage = function() {
 
 updateContracts = function(contracts) {
 	if (window.web3) {
-	    window.web3.reset();
+		window.web3.reset();
 		window.contracts = {};
 		for (var c in contracts) {
 			var contract = window.web3.eth.contract(contracts[c].address, contracts[c].interface);
@@ -36,6 +36,12 @@ init = function(url) {
 	web3.setProvider(new web3.providers.HttpSyncProvider(url));
 };
 
+executeJavaScript = function(script) {
+	var preview = document.getElementById('preview');
+	var obj = preview.contentWindow.eval(script);
+	return JSON.stringify(obj, null, 2);
+}
+
 </script>
 
 <style>
diff --git a/mix/qml/img/console.png b/mix/qml/img/console.png
new file mode 100644
index 000000000..6958d5309
Binary files /dev/null and b/mix/qml/img/console.png differ
diff --git a/mix/res.qrc b/mix/res.qrc
index e953b3e35..c3e175972 100644
--- a/mix/res.qrc
+++ b/mix/res.qrc
@@ -115,5 +115,6 @@
         <file>qml/img/copy.png</file>
         <file>qml/img/broom.png</file>
         <file>qml/LogsPaneStyle.qml</file>
+        <file>qml/img/console.png</file>
     </qresource>
 </RCC>