Cheatography
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The Command Line API contains a collection of convenience functions for performing common tasks: selecting and inspecting DOM elements, displaying data in readable format, stopping and starting the profiler, and monitoring DOM events.
Elements$0 - $4 | $0 returns the most recently selected element or JavaScript object, $1 returns the second most recently selected one, and so on | $1 | $(selector) | returns the reference to the first DOM element with the specified CSS selector | $('img') | $$(selector) | returns an array of elements that match the given CSS selector | $$('img') | $x(path) | returns an array of DOM elements that match the given XPath expression | $x('//p[a]') | monitorEvents(object[, events]) | logs to the console when one of the specified events occurs on the specified object | monitorEvents(window, "resize") | unmonitorEvents(object[, events]) | stops monitoring events for the specified object and events | monitorEvents(window) |
Functions / Codedebug(function) | invokes debugger and breaks inside the function | debug(loginUser) | keys(object) | returns an array containing the names of the properties belonging to the specified object | keys(user) | monitor(function) | logs a message to the console that indicates the function name along with the arguments that are passed | monitor(loginUser) | profile([name]) | starts a JavaScript CPU profiling session with an optional name | profile('User Login') | profileEnd([name]) | stops a JavaScript CPU profiling session with an optional name | profileEnd('User Login') | table(data[, columns]) | logs object data with table formatting by passing in a data object in with optional column headings | table(user) | undebug(function) | stops the debugging of the specified function | undebug(loginUser) | unmonitor(function) | stops the monitoring of the specified function | unmonitor(loginUser) | values(object) | returns an array containing the values of all properties belonging to the specified object | values(user) |
Common$_ | returns the value of the most recently evaluated expression | $_ | clear() | clears the console of its history | clear() | copy(object) | copies a string representation of the specified object to the clipboard | copy($0) | dir(object) | displays an object-style listing of all the specified object’s properties | dir($0), dir(myObject) | dirxml(object) | prints an XML representation of the specified object, as seen in the Elements tab | dirxml($0), dirxml(myObject) | inspect(object/function) | opens and selects the specified element or object in the appropriate panel | inspect(document.body) |
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