console.log

问题 I am using eval() to run a script from a string. Below is the code: eval('console.log("hello")'); I will get hello from the console output. I wonder whether I can save the hello into an variable in the current context. So I am looking for something like this: const output = eval('console.log("hello")'); // I expect the console output is returned from eval() function. But I get an undefined response. Is there a way for me to do that? 回答1: It is impossible because console.log() only returns

问题 I'm using the cloudinary widget to upload images on my websites. Now I'd like to get the info from an image when it's being uploaded e.g. the path of that image. I can see that this information is available in the console log when uploading the image e.g. {path: "v1586568667/myusername/lp62llmn8sa7r5vqjovd.jpg"} I believe I have to use ajax to get this information, but I'm struggling to find some examples, if someone could point me to the right direction. 回答1: Thanks everyone for your

问题 I use node v10.6.0 . Here's my codes: console.log([{a:1, b:2}, {a:1, b:2}, {a:1, b:2}]) console.log([{a:1, b:2}, {a:1, b:2}, {a:1, b:2}, {a:1, b:2}, {a:1, b:2}, {a:1, b:2}, {a:1, b:2}, {a:1, b:2}, {a:1, b:2}]) the output is as following: [ { a: 1, b: 2 }, { a: 1, b: 2 }, { a: 1, b: 2 } ] [ { a: 1, b: 2 }, { a: 1, b: 2 }, { a: 1, b: 2 }, { a: 1, b: 2 }, { a: 1, b: 2 }, { a: 1, b: 2 }, { a: 1, b: 2 }, { a: 1, b: 2 }, { a: 1, b: 2 } ] How can I make the second array output in one line, instead

问题 I use node v10.6.0 . Here's my codes: console.log([{a:1, b:2}, {a:1, b:2}, {a:1, b:2}]) console.log([{a:1, b:2}, {a:1, b:2}, {a:1, b:2}, {a:1, b:2}, {a:1, b:2}, {a:1, b:2}, {a:1, b:2}, {a:1, b:2}, {a:1, b:2}]) the output is as following: [ { a: 1, b: 2 }, { a: 1, b: 2 }, { a: 1, b: 2 } ] [ { a: 1, b: 2 }, { a: 1, b: 2 }, { a: 1, b: 2 }, { a: 1, b: 2 }, { a: 1, b: 2 }, { a: 1, b: 2 }, { a: 1, b: 2 }, { a: 1, b: 2 }, { a: 1, b: 2 } ] How can I make the second array output in one line, instead

问题 I use node v10.6.0 . Here's my codes: console.log([{a:1, b:2}, {a:1, b:2}, {a:1, b:2}]) console.log([{a:1, b:2}, {a:1, b:2}, {a:1, b:2}, {a:1, b:2}, {a:1, b:2}, {a:1, b:2}, {a:1, b:2}, {a:1, b:2}, {a:1, b:2}]) the output is as following: [ { a: 1, b: 2 }, { a: 1, b: 2 }, { a: 1, b: 2 } ] [ { a: 1, b: 2 }, { a: 1, b: 2 }, { a: 1, b: 2 }, { a: 1, b: 2 }, { a: 1, b: 2 }, { a: 1, b: 2 }, { a: 1, b: 2 }, { a: 1, b: 2 }, { a: 1, b: 2 } ] How can I make the second array output in one line, instead

问题 I have seen a lot of questions from people trying to console log from the rendering process, this is NOT my problem I have console.log littering my main code and I don't see anything in my console here is my code. /* eslint-disable no-undef */ const { app, BrowserWindow, ipcMain } = require('electron'); const path = require('path'); const url = require('url'); /* eslint-enable */ let win; console.log('console log test'); function createWindow() { win = new BrowserWindow({ width: 800, height:

问题 When running console.log("Express server listening on port " + port); in node.js on a deployed Azure website, I get the following string Express server listening on port \\.\pipe\d9797e42-9e1f-421c-91b9-3d86496eaeb8 What is this and how can I determine what port my site is really running on? 回答1: Should be running in port 80. Seems like an internal instruction from the server 来源： https://stackoverflow.com/questions/25514750/process-env-port-prints-weird-string

问题 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. 回答1: To quote

问题 In Javascript, when you write a piece of code like the one below, it seems like the computer will first complete the entire loop 100 000 times (which can take a second or two) and THEN dump all 100 000 lines in the console in one shot. How can I make it so that the computer will update the console one line at a time, with each pass thru the loop? To clarify, I would like to, in effect, be able to see what the computer is doing AS it is doing it, and not once it has finished doing it. for (var

问题 Front-End app.factory('CustomerService', function($http) { return { addCustomerToDb : function(customer) { return $http.post('localhost:4000/new_info', customer) .success(function(response) { //alert(JSON.stringify(data)) console.log(response.customer) }); // return $http({ // method:"POST", // url: "localhost:4000/new_info", // customer:customer // }); } } }); app.controller("new_info", function($scope, CustomerService, $routeParams) { $scope.register = function () { CustomerService