console.log

问题 I am trying to write a convenience wrapper for console.log, and I would like to print any variables passed in along with their contents. Can I turn a variable name into a string in js? 回答1: Assuming you want something like this: function Log(data) { console.log(input variable name, data); } Then I don't think it is possible: For convenience.. you could do something like console.log({ "your variable name": your variable}); Which turns the input to an object that does contain the variable name

问题 I'm moving from QScriptEngine (which is deprecated) to QJSEngine , and I see that I'm unable to use print : QJSEngine engine; QJSValue val = engine.evaluate( "print('123');" ); if (val.isError()){ qDebug() << "error: " << val.toString(); } qDebug() << "val: " << val.toVariant(); The output is: error: "ReferenceError: print is not defined" In QScriptEngine it works. Then, what is the way to print something to console in QJSEngine ? Can't find anything in docs. I tried to use console.log , but

问题 I am having one application which has OpenLayers Map and implemented using reactjs with OpenLayers library. I am trying to get the latitude and longitude of the map from the browser console in order to use the same in my selenium automation. I am using the below code in the console and getting an error as below Error: "Uncaught TypeError: map.getLayers is not a function at <anonymous>:1:5" Script: map.getLayers().forEach(function(layer){ if(layer instanceof ol.layer.Vector){ var features =

问题 Let me know if you need more information to solve this issue. I'm trying to retrieve local data using a factory and calling it from a controller. Controller.js: storage.getAllLocalInfo().then(function(data){ console.log(data.distractions[0].type); // produces 'url' // console.log(data.distractions); // produces the following // 0: Object // oldTxt: "youtube.com" // txt: "youtube.com" // type: undefined $scope.distractions = data.distractions; // This only happens when executing the line above

问题 How can remove console.log in the production build of a React application created using create-react-app? 回答1: The simple solution to the question is to help others who are facing the same issue. Ref: https://stackoverflow.com/a/41041580/3574669 The suggestion in the reference, it needs to do a change in the file "webpack.config.js". The create-react-app uses the webpack and the config file internally but it is not possible to add webpack.config.js in my application root for applying the

问题 Odd one this. Ever since upgrading to iOS10 and the latest Appcelerator SDK (5.5.0), I can't get even a simple console.log("hi!") to show anything in the console when I'm testing on an iPhone 6s Plus connected to my Mac via USB, using LiveView. I've tried changing it to Ti.API.info("hi!") - which I believe is the old way to do it - to no avail. If I change it to alert("hi!") , that works fine. However, it's not as useful as console.log used to be when developing things which MUST be tested on

问题 I would like to check if a certain console error has occurred using javascript, and alert() myself if it has. The error will look like this: 00:00:34:0359 TimeEvent.COMPLETE (anonymous function) @ VM17617:1 And the algorithm will look something like this: function checkError(console) { if(console.error === "TimeEvent.COMPLETE") { alert("The error is present"); } } I'm not very familiar with the console, and haven't gotten much further with Google research. Can somebody point me in the right

问题 I don't understand why console.log displays that d1 contains [100,200,300] before I even introduced these numbers. Regular for loop displays internals of d1 correctly though. Can someone please explain this behavior/bug of console.log in Google Chrome? https://jsfiddle.net/ZSvyt/ var container = {}; container["0"] = [10, 20, 30]; var d1 = container; console.log('before console.log'); console.log(d1); // <--- IT DISPLAYS [100, 200, 300]. WHY? // before for loop console.log('before for loop');

问题 I am getting "Failed to load resource: net::ERR_EMPTY_RESPONSE" error for my api calls if console is not opened. However if console is opened, the api calls work fine . Angular2 is used on frontend side and NodeJS for backend.Can someone please help? 回答1: It may be linked to this issue : Failed to load resource: net::ERR_EMPTY_RESPONSE For him, the problem came from Avast Antivirus 来源： https://stackoverflow.com/questions/47153569/failed-to-load-resource-neterr-empty-response-when-console-not

问题 I'm pulling my hair out over IE9/8; I'm trying to use mOxie, but it's showing up as undefined , even though it's very clearly defined. when, from another file, I log mOxie to the console, it logs it perfectly fine in Chrome/IE10+, but firing the same script in IE9/8 logs undefined . However, in IE9/8, when I type 'mOxie' in the console directly, it correctly logs the object. http://jsfiddle.net/vxyayxy8/ -- Run in IE10 mode, and you'll see that it loads an object. Run in IE9 mode, and you'll