Internet explorer 8 developer tools profiler

To help reduce these costs, you can download the Enterprise Site Discovery Toolkit , which can help you prioritize which sites you should be testing based on their usage in your enterprise. For example, if the data shows that no one is visiting a particular legacy web app, you may not need to test or fix it. The toolkit also gives you information about which document mode a page runs in your current browser so you can better understand how to fix that site if it breaks in a newer version of the browser.

Once you know which sites to test and fix, the following remediation methods may help fix your compatibility issues in Internet Explorer 11 and Windows Some sites may need to be added to both Enterprise Mode and Compatibility View to work. You can do this by adding the site to IE7 Enterprise Mode. If your website worked in an older version of Internet Explorer, but no longer works in Internet Explorer 11, you may need to update the site. Here are the set of steps you should take to find the appropriate remediation strategy.

Open the site in Internet Explorer 11, load the F12 tools by pressing the F12 key or by selecting F12 Developer Tools from the Tools menu, and select the Emulation tab. You will need to make sure the User agent string dropdown matches the same browser version as the Document mode dropdown. For example, if you were testing to see if the site works in Internet Explorer 10, you should update the Document mode dropdown to 10 and the User agent string dropdown to Internet Explorer If you find a mode in which your site works, you will need to add the site domain, sub-domain, or URL to the Enterprise Mode Site List for the document mode in which the site works, or ask the IT administrator to do so.

You can add the x-ua-compatible meta tag or HTTP header as well. Enable the Let users turn on and use Enterprise Mode from the Tools menu policy locally on your machine. To do this:. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. Please rate your experience Yes No. Any additional feedback? In this article. Click a property name or value to edit it.

Press "Enter" to accept and apply changes immediately. Note For numeric properties, you can click the value and use the up and down arrow keys to change the value like a spin control. The F12 tools console tab offers a full width view of the same information you see in Script view, where you see the Console view in the right pane. You can receive error messages from Internet Explorer, as well as send your own messages back from your code without having to break the flow of your execution.

You can also use the F12 tools Console view to immediately run script statements outside your program code. Lets you quickly find the source for an element on the current webpage. Click this button and then click the element on the webpage. The left pane switches to the HTML view, and highlights the element source.

The details pain displays Style, Trace Styles, Layout, or Attribute information about the selected element. For a list of Console view errors, see F12 tools console error messages. The Script tab lets you see and interact with the JavaScript source on the webpage. Click the View sources drop-down button to pick other script files.

Script view shows line numbers and syntax coloring. Click the left margin or a line number to set or clear breakpoints. You can select text in this pane, and right click for a context menu that offers additional commands. The details pane in the Script view displays information about the code in the left pane. Click to choose one of the detailed views that include console and error messages, local variables, watch variables, function call stack, and the list of breakpoints.

The console receives error messages from Internet Explorer. Using the console API, your code can send messages to the console without having to break the flow of your execution. This is less intrusive than using the traditional alert method or printing to the screen. The Console command line can run single and multi-line script statements outside your program code. Statements are executed immediately and results appear in the Console 's pane.

View variables from any scope. To add local or global variables and objects, do one of the following:. When the debugger is running and execution stops at a breakpoint, you can view local variables within the scope of the current function.

If you step into another function, the local variable view reflects the new current function. Trace the flow of function calls made by executing code. The current function is on top and the function that calls it is below it in the stack. You can double-click a function to go to that function definition in the source. This command requires the debugger to be started and execution be stopped at a breakpoint.

Set breakpoints to stop execution at this point of the script in order to inspect the code. From the Script view pane, you can set breakpoints by doing one of the following:. You can also set a conditional breakpoint that stops execution when the condition is true, such as when an exception happens or a variable exceeds a specified value.

To set a condition to a breakpoint, right-click a breakpoint in either the left or right pane, and select Condition. From the Breakpoints pane, you can view a list of all the breakpoints set that are related to the webpage or site you're debugging. You can double-click a breakpoint item to go to that breakpoint in the code.

Right-click the pane for a context menu with more options. F12 tools provides a built-in script profiler that lets you to profile your running JavaScript code in Internet Explorer. The Current view controls how profiled information is presented. Click the title of a column to sort the report based on that column.

You can double-click an entry to open the Script view and display the code where this item is defined. The profiler toolbar lets you change views, export data, start and stop profiling, and view profiling reports. Use this command to quickly find an element on a webpage.

Click this button to start collecting profile information. When the profiler is started, click the activities you want to profile on your webpage. These script activities are collected and presented to you in a Report. Click the Stop Profiling button to stop profiling and view the report.

The session is logged into a report and the information displayed. Repeat this process to record another profiling session. Set the current view of the profile report.

You can view profile report using either the Functions or Call Tree views. Each recorded profile session creates a numbered Report. Click the Report drop-down list to switch between reports.

Closes the current report. The closed report is removed from the report list. The next report on the list becomes the current report. For more info about using the Profiler, see Using the Profiler Tool to analyze the performance of your code. The Network tab can help you diagnose network-related issues by showing all the traffic that is related to a page and exposing details about individual connections. You can see the relative timing that each item on a webpage takes to load and render, so you can quickly see and solve problems.

The Save button lets you save the network capture log to an XML or comma delimited. CSV file for further analysis in a spreadsheet or database. Click to record network traffic. Click again to stop recording and view the report that is generated. The summary view default shows all network activity recorded. Click button to change to the detailed view, which drills down on a single URL. When in detailed view , the next and preview buttons appear to the right of this button, and let you page through the details of each URL in the report.

The Search box provides a way to quickly find specific text in the currently open file or report. Search is context-sensitive and what it can find is based on the currently selected view. Search highlights all matching words and next and previous buttons let you navigate the matches. As you traverse the list of matches, the current match is highlighted and brought into view. For example, use the keyword " div" to find all the div elements in the page.

You can search for CSS class names by ". You can also narrow your search down by element. For example, " div.

Search terms are case sensitive when searching for selector class names. For all other views, such as the CSS view, use regular text keywords. Search is not case sensitive in this case. Each Internet Explorer instance has its own instance of F12 tools. When working with multiple webpages, use the Pin feature to attach each instance of F12 tools to its associated Internet Explorer instance.

When script debugging starts, F12 tools opens in a separate window. The F12 tools window offers the normal Minimize , Maximize , Restore , and Close window controls, as well as additional pinning controls. To resize a pinned F12 tools session, stretch the upper edge of the window to size. In a minimized state, F12 tools remains attached to the window and only the Menu Bar is visible. Developer Tools Keyboard Shortcuts Reference. Skip to main content.

This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. In this article. Lists command menus that can be accessed at any time regardless of the selected View. The Menu bar persists on the screen even when the F12 tools interface is pinned to the Windows Internet Explorer window.

Provides a list of views to select for your page. The left pane is the main view for all views. Depending on the current view, the divider between the two panes can be moved to resize each pane. For Console and Profiler tools, there are no separate detail panes.

When in Script view, this button displays a drop-down list of all files and dynamic scripts associated with the page.

Resets all the changes made to the current instance of Windows Internet Explorer and refreshes the webpage. Lets you change the source viewer to use when you click View Source : Default viewer: Use the built-in color-coded syntax viewer. Notepad: Use Notepad as the viewer.