See Fix JavaScript errors that are reported in the Console. Track down problems to find out why something isn't working in the current project.The Console tool helps with several tasks, which are covered in more detail in the following articles: The Console provides a powerful way to script functionality, inspect the current webpage, and manipulate the current webpage using JavaScript. You may use string substitution and additional arguments with this method.The Console is like an intelligent, rich command line within DevTools, and is great companion tool to use with others tools. console.timeStamp() Non-standardĪdds a marker to the browser performance tool's timeline ( Chrome or Firefox). Logs the value of the specified timer to the console. Stops the specified timer and logs the elapsed time in milliseconds since it started. Up to 10,000 simultaneous timers can run on a given page. Starts a timer with a name specified as an input parameter. console.table()ĭisplays tabular data as a table. You can see the resulting profile in the browser's performance tool (for example, the Firefox performance tool). You can specify an optional name for the profile. Starts the browser's built-in profiler (for example, the Firefox performance tool). You may use string substitution and additional arguments with this method.
console.log()įor general output of logging information. To move back out a level, call groupEnd(). However, unlike group() this starts with the inline group collapsed requiring the use of a disclosure button to expand it. oupCollapsed()Ĭreates a new inline group, indenting all following output by another level. console.exception() Non-standard DeprecatedĬreates a new inline group, indenting all following output by another level. console.dirxml()ĭisplays an XML/HTML Element representation of the specified object if possible or the JavaScript Object view if it is not possible. This listing lets you use disclosure triangles to examine the contents of child objects. console.dir()ĭisplays an interactive listing of the properties of a specified JavaScript object. Outputs a message to the console with the log level debug. Resets the value of the counter with the given label. Log the number of times this line has been called with the given label. Log a message and stack trace to console if the first argument is false.
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