console.log

console message JavaScript with green checkmark

由 生来就可爱ヽ(ⅴ＜●) 提交于 2019-12-07 07:28:58
问题 I was wondering if the was a possibility to have a green checkmark in your console just like console.warn has the yellow warning sign and console.error has the red error sign. I have searched on the internet if there already was a function like that, but I couldn't find it. Now I'm looking for a way to put an icon before a console.log message. Is this possible? 回答1: Certainly is. You can use CSS in Chrome: console.log("%c hi", "background: url(path/to/your/icon.png) 0 0 no-repeat; padding

How to console.log an error with stack trace in node.js?

由 不羁岁月 提交于 2019-12-07 02:19:55
问题 I've been trying to debug my node app to find the source of an error in my log that shows up only as " Error: Can't set headers after they are sent ", with no trace information or any context. As it happens, I think I've now fixed this... I am using connect-timeout and I was continuing processing a callback passed to an asynchronous network operation, which callback would eventually try to do a res.send() , despite req.timedout having been set to 'true' by connect-timeout during the network

console.time shows different time running the same function

由 ε祈祈猫儿з 提交于 2019-12-06 12:12:59
I use console.time to show the time of the function. But I found that it shows different running time of the same function. I have simplified my function as below: const findIP = (res) => { let arr = [] arr = res.split(',') } console.time('1') findIP('1,2,3,4,5,6,7,8,9,0') console.timeEnd('1') console.time('2') findIP('1,2,3,4,5,6,7,8,9,0') console.timeEnd('2') The time difference between the two is very large. I have tried to run several times. And it still cost different time. To quote the answer in the the following link: If you run shorten multiple times, the V8 engine has a JIT compiler

Javascript - How does “++i” work?

由 ▼魔方 西西 提交于 2019-12-06 11:14:19
问题 After experimenting with the use of "i++" and "++i" I could not find a difference between their results when used in a 'for' loop. For example: for (var i = 0; i < 10; ++i) { console.log(i); } would yield: 0 1 2 3 4 5 6 7 8 9 Shouldn't it be printing out the numbers from 1 to 10, as the iterator is being incremented before console.log(i) executes? 回答1: The "increment step" is executed after the loop body is executed. Given for (a;b;c) { d } the execution order is a // initialize b //

Console log not printing variable from function

由 ▼魔方 西西 提交于 2019-12-06 06:43:32
Trying to print the variable 'randomWord' to console.log, but chrome says it is not defined. It looks like it's defined to me. Why won't it print to the console.log? function strt(){ //get random word from words[] array var randomWord = words[Math.floor(Math.random()* words.length)]; var wordLength = randomWord.length; //create a blank boxes or div elements for holding each letter of // selected random word for(i = 0 ; i< wordLength; i++){ var divTag = document.createElement("div"); divTag.id = "div" + i; divTag.className = 'wordy'; //divTag.innerHTML = randomWord[i]; hangManDiv.appendChild

How to restore console.log on a web page that overwrites it?

由 随声附和 提交于 2019-12-06 03:32:47
问题 Twitter’s website does something like console.log = function () {}; to turn the browsers’ built-in console.log method into a no-op. Is there I way to restore the original function? 回答1: Unless they also removed it in the prototype, getting the log method using getPrototypeOf() should work: console.log = Object.getPrototypeOf(console).log; Since using console.log = function() {} overrides, but doesn't remove the one defined in the prototype, you can delete the overriding method: delete console

Azure NodeJS console log

由 a 夏天 提交于 2019-12-05 21:50:43
I have a Visual Studio Enterprise MSDN subscription so I decided to move from Heroku to Microsoft Azure because I used to pay: now I don't. My Service Plan is the D1. I wish I can trail the console.log strings of my Node JS application deployed on my Azure platform. My service plan is the shared one named I deployed the app code on BitBucket and linked my repo to the application with a correct destribution. Correct means I see the green check flag. I deployed, on the main folder of the app, a file named IISNode.yml, here is the content: nodeProcessCommandLine: "D:\Program Files (x86)\nodejs\0

Bound console methods

由 浪尽此生 提交于 2019-12-05 10:30:53
To my knowledge, console methods are bound in most if not all modern JS engines. var log = console.log; log('foo'); window.addEventListener('load', console.log); // or any other API that accepts callbacks will result in proper console output, at least in up-to-date Edge, Firefox and Chrome/Node.js versions, so it's relatively safe to rely on this behaviour in development environment. Unfortunately, Can I use and MDN don't cover this and potentially contain unverified information. What are exact browser versions where this behaviour is supported? Is this a part of any current standard or a

How to console.log an error with stack trace in node.js?

由 ＊爱你＆永不变心＊ 提交于 2019-12-05 06:47:54
I've been trying to debug my node app to find the source of an error in my log that shows up only as " Error: Can't set headers after they are sent ", with no trace information or any context. As it happens, I think I've now fixed this... I am using connect-timeout and I was continuing processing a callback passed to an asynchronous network operation, which callback would eventually try to do a res.send() , despite req.timedout having been set to 'true' by connect-timeout during the network operation. BUT I still can't understand why my log wasn't showing trace information for this error.

Why does console.log behave like this?

由 北战南征 提交于 2019-12-05 00:57:24
On the node.js interpreter:- console.log("A newline character is written like \"\\ n \"."); //output is:- // A newline character is written like "\ n ". But when you simply enter this in the node.js interpreter:- "A newline character is written like \"\\ n \"." // it prints out:- //'A newline character is written like "\\ n ".' Does anybody now why this happened? Just curious to know more about node.js Thanks in advance for your answer. When logging a string, it gets fully parsed and every character gets escaped, and that's ok, it is the expected behavior. Nonethless, displaying a string (not
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