js write to console

The example of this article is about JS simple to realize the output information of Baidu control console. Share to everyone for your reference, specific as follows: The effect chart is as follows: More readers interested in JavaScript-related content can view the site topics: "JavaScript error and debugging skills Summary", "JavaScript switching effects and techniques summary", "JavaScript anim

In the process of developing code, programmers use the console as a means of debugging code procedures.Publish to a test production environment and discover that IE8 has a load error. Use the developer tools to debug and find that you can bypass the problem.Search through the web and make corrections in the project.The following measures may be effective:1, remove the console code (because it is debugging c

I. Commands to display information 1: The most common is the console.log.Two: PlaceholderConsole The above concentration supports printf placeholder format, supported placeholders are: characters (%s), integers (%d or%i), floating-point numbers (%f), and objects (%o) 1: Effect:Iii. Grouping of information 1: Effect:Iv. Viewing the information of an objectConsole.dir () can display all properties and methods of an object. 1: Effect:V. Display the contents of a nodeConsole.dirxml () is use

Http://www.cnblogs.com/52cik/p/js-console-acquaintance.html console.log Output information http://javascript.ruanyifeng.com/tool/console.html---console object Pre class= "Hljs JavaScript" >$ //simple understanding is document.queryselector. $$ //simple understanding is document.queryselectorall. $_ //is the value of the previous expression,

the second is false, displaying an error message on the consoleTracing the call trajectory of the function.Console.trace () is used to track the call path of a function. 1: Console output Information:Eight, chronograph functionConsole.time () and Console.timeend () are used to display the elapsed time of the code. 1: Run Time is 38.84msPerformance analysis of Console.profile ()Performance analysis (Profiler) is the analysis of the various parts o

() .CopyThis command allows you to copy the contents obtained from the console to the ClipboardBecause I just used the console to select an element ID, so I use $_, although the console output is undefined, but you create a new Notepad, CTRL + C try it, it's amazing.keysvaluesKeys returns data that consists of all the property names of the passed-in objectValues

() .CopyThis command allows you to copy the contents obtained from the console to the ClipboardBecause I just used the console to select an element ID, so I use $_, although the console output is undefined, but you create a new Notepad, CTRL + C try it, it's amazing.KeysvaluesKeys returns data that consists of all the property names of the passed-in objectValues

The recent beginner JS, think is a very powerful language, early in the console output, a simple summary of the method of array sorting:First, select the sort and then go to weight:Let arr = [3,7,2,9,6,5,8,7,3];let temp;for (Let i=0; iif (Arr[i]>arr[j]) { temp = arr[i]; Arr[i] = arr[j]; ARR[J] = temp;}} } Let arr1 = [];for (let k=0; kThis method is more complex, and the o

The use of the console. dir method in node. js is described as follows: node. jsconsole. dir Method description: Pass obj as a parameter to util. inspect and execute the command to print the returned result to stdout. This function ignores any custom inspect () function objects. Syntax: Copy codeThe Code is as follows:Console. dir (obj) Receiving parameters: Any object of obj Example: Copy codeThe

This article describes the JS implementation of the Taobao Alipay Web site menu effect. Share to everyone for your reference. Specifically as follows: This is a Alipay website of the console total menu, can realize the display of animation effect, beautiful beautiful, concise and practical, the mouse moved to the text, will slide out of a menu layer, removed after disappearing, but also the current more po

)) {P.style.color= Color.split (': ') [1]; Args= [].slice.apply (args,[0,-1]); }Else{args= [].slice.apply (args,[0]); } vars = Args.join ("). Replace (/[function(s) {return' +s.charcodeat ' (0);}); P.innerhtml=s; This. Board.appendchild (P); return This; }, GetCode:function(){ varCode = This. Editor.queryselector (' textarea '). Value; return NewFunction (code); }, Test:function(){ varFun = This. GetCode (); Fun.call ( This); This. Showeditor (false). Showlog (); return

I. Commands to display informationConsole.log (' details ');Console.error (' error '); Console.warn (' warning ');Two: Placeholder console The above concentration supports printf placeholder format, supported placeholders are: characters (%s), integers (%d or%i), floating-point numbers (%f), and objects (%o)Console.log ("%d years%d months%d days", 2015,6,28); Iii. Grouping of informationConsole.group ("My Information"); Console.log ("User name: Tpyt

When the following error occurs on the console:Uncaught syntaxerror:unexpected TokenNote that the input symbols are checked for errors;When the following error occurs:Null1. Check if the Id:banner and tagname:img of the error line exist in the relevant HTML page;var pics = document.getElementById ("banner"). getElementsByTagName ("img")2. Check whether the introduction of JS file in the HTML page is introduced at the bottom of the body, if it is intro

(var j=0;j) {} } Console.timeend ("console timer one");Performance analysis of Console.profile ()Performance analysis (Profiler) is the analysis of the various parts of the running time, to find out the bottleneck, the method used is Console.profile ().function All () { alert (one); for (var i=0;i) { Funca (+); } FUNCB (10000);} function Funca (count) { for (var i=0;i) {}} function FUNCB (count) { for (var i=0;i) {}}conso

This article mainly introduces the JS Debugging Tool console command in detail, the need for friends can refer to the nextI. Commands to display informationCopy CodeThe code is as follows:The most common is the console.log.Two: PlaceholderConsole The above concentration supports printf placeholder format, supported placeholders are: characters (%s), integers (%d or%i), floating-point numbers (%f), and objec

error message on the consoleTracing the call trajectory of the function.Console.trace () is used to track the call path of a function. 1: Console output Information:Eight, chronograph functionConsole.time () and Console.timeend () are used to display the elapsed time of the code. 1: Run Time is 38.84msPerformance analysis of Console.profile ()Performance analysis (Profiler) is the analysis of the various parts of the running time, to find out the

Error: Exception state that occurred during program runCause the program to stop running--exceptionError handling: A mechanism to ensure that programs do not exit when a program error occursWhen an error occurs, the program automatically creates an Error object:Only the wrong information is encapsulated in the Error objectJS species *6 * Error object:1.SyntaxError: syntax error2.ReferenceError: Reference Error3.TypeError: type error, wrong method of using type or type4.RangeError: range error, s

JS JavaScript Disables the right-click menu and F12 Open the console to see the code

I. Commands to display information The most common is the console.log.Two: PlaceholderConsole The above concentration supports printf placeholder format, supported placeholders are: characters (%s), integers (%d or%i), floating-point numbers (%f), and objects (%o)Effect:Iii. Grouping of informationEffect:Iv. Viewing the information of an objectConsole.dir () can display all properties and methods of an object.Effect:V. Display the contents of a nodeconsole.dirxml () is used to display the Html/x

First,commands to display informationThe most common is the console.log.Second,placeholderConsole The above concentration supports printf placeholder format, supported placeholders are: characters (%s), integers (%d or%i), floating-point numbers (%f), and objects (%o)Effect:Third,Information GroupingEffect:Four,View information about an objectConsole.dir () can display all properties and methods of an object.Effect:Five,Display the contents of a nodeConsole.dirxml () is used to display the Html/