console.log

问题 This question already has answers here : Calling an asynchronous function within a for loop in JavaScript (8 answers) JavaScript closure inside loops – simple practical example (44 answers) Closed 3 years ago . I have the following code (javascript/jQuery) $(function(){ for(var i=0;i<3;i++){ $.getJSON("https://api.twitch.tv/kraken/streams/esl_csgo", function(data){ console.log(i); console.log(data); }); } }); console log: 3 Object { stream: Object, _links: Object } 3 Object { stream: Object,

问题 I am trying to understand why these console.log statements behave differently. I expect them to behave the same: Using Node 7. Consider the following cases: 1. Promise.resolve(object) Promise.resolve handles objects as I'd expect: Promise.resolve({ a: `hello` }).then(console.log) // { a:'hello' } 2. Directly console.log a class instance from a library. If I store an Osmosis instance I can console.log it: const osmosis = require(`osmosis`) console.log(new osmosis.get(url)) /* { prev: {

问题 I feel like I'm going crazy but alert() and console.log() refuses to work anywhere on Firefox 26 . At first I thought it was my own website's problem, but I cannot for the life of me to get it to work via javascript: urls, Firebug , I even tried it in jsfiddle.net by just putting alert('test'); in the script panel. Tried uninstalling and installing again, no luck . The only extension I'm running is Firebug. Heck, Stackoverflow didn't even prompt me about leaving when I accidentally clicked

问题 Is there a limit the length of console.log output in Node.js? The following prints numbers up to 56462, then stops. This came up because we were returning datasets from MySQL and the output would just quit after 327k characters. var out = ""; for (i = 0; i < 100000; i++) { out += " " + i; } console.log(out); The string itself seems fine, as this returns the last few numbers up to 99999: console.log(out.substring(out.length - 23)); Returns: 99996 99997 99998 99999 This is using Node v0.6.14.

问题 I'm building an app using the Ionic framework, which I've done in the browser until now. Because I now want to use the cordovaOauth plugin I need to use the emulator. The problem is that I can't see any console.log() in the emulator as I do in the browser, which makes it hard to debug. Does anybody know how in Ionic/Cordova I can make use of console logging in the emulator? All tips are welcome! 回答1: Just enable the console logs in the emulator. Here my example: > ionic emulate ios -

问题 I just taught myself how to code with tutorials from the internet. I'm currently trying to learn Javascript and I don't really undesrtand the purpose of "return". I made a "rock, paper, scissors" game at the end of my lesson, using the return function. The game looks like this: var userChoice = prompt("Do you choose rock, paper or scissors?"); var computerChoice = Math.random(); if (computerChoice < 0.34) { computerChoice = "rock"; } else if(computerChoice <= 0.67) { computerChoice = "paper";

问题 Is it possible in code to access ["[[FunctionLocation]]"] property that google chrome developer tools show when using console log on a function ? 回答1: The answer, for now, is no . The [[FunctionLocation]] property you see in Inspector is added in V8Debugger::internalProperties() in the debugger's C++ code, which uses another C++ function V8Debugger::functionLocation() to gather information about the function. functionLocation() then uses a number of V8-specific C++ APIs such as v8::Function:

问题 This question already has answers here : Difference between console.log and return in javascript? [closed] (7 answers) Closed 2 years ago . I'm trying to learn JS from Codecademy. I'm doing this excercise. Can someone please tell me why return is used instead of console.log() ? I don't fully understand how return works. 回答1: console.log is useful for debugging purposes, but actually can't accomplish anything as far as affecting the surrounding code or application. return is a way of

问题 Im pretty sure that a lot of people have encountered this situation. For Ex: You have a simple Choose Your Own Adventure game from JS. var name = prompt("Name?"); console.log("Hello" + name); var age = prompt("Age?"); console.log(name + " is " + age + " years old"); what happens is the first prompt is shown and then the second prompt (age) is shown immediately afterwards. Also, the console doesn't even print out the "Hello" + (name) until after you answer the two prompts. Is there anyway you

问题 My Cordova app has been output console.log just fine in Console of Xcode. Then suddenly one day (not sure what happened), it just shows blank. I followed the instructions here but nothing works Xcode 4 - Debug Area no longer shows my console output (NSLog) Here are what I have: This always shows but BLANK: UPDATE 1 I tried an old codebase and no console log either. So this looks like Xcode configuration specific. Something messed up randomly and automatically. 回答1: I found out the deployment