).Console.log (): Prints characters to the standard output stream and ends with line breaks. If there are multiple parameters, it is output in a format similar to the C-language printf () command. The first argument is a string, and if there are no arguments, only one line break is printed.Console.error (): Same as Console.log () usage, just output to standard error stream.Console.trace (): Outputs the current call stack to the standard
output and normal output of the program in different places, such as different log files, different terminal)Console is used to provide console standard output for outputting characters to the standard output stream (STDOUT) or standard error stream (stderr).(1) Console.log accepts a number of parameters, if there is only one argument, outputs the string form of the parameter, or, if there are multiple parameters, output in the format of the printf (
Node. js advanced core module. net introduction and instance description module Overview
The net module is also the core module of nodejs. As mentioned in the overview of the http module, http. Server inherits net. Server. In addition, communication between the http client and the http Server is dependent on socket (net. Socket ). That is to say, for node Server
reduce the necessary global functions, and put to the global also does not affect.Here is the addition of a function to bind, if I do not want to add a function, of course, can also be implemented, here is the self-executing function. Speaking of self-executing function, do not know what people understand, there was an incident, I really do not understand that kind of writing, why is called self-executing function, here also by the way.There is no one that
From the library perspective, ext (a friend who likes Chinese can visit its Chinese site) is not much different from prototype jquery Yui, but it has its advantages, complete oo support, mature general-purpose widgets, and support themes, good scalability, fast update and release of new widgates,CommunityIt is also very lively. The most important thing is that I personally like it.
OpenSource codeTake a look at its structure: Start with core.
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This article mainly introduces the core (1) architecture of jQuery2.0.3 source code analysis. If you need it, you can refer to an open-source framework. What you want to learn most is design ideas and implementation skills.
Not much nonsense. jquery has been writing bad Analysis for so many years and has read it before,
However, I have been working on mobile terminals over the past few years, and I have been using zepto. Recently, I took some time to
node. js in FS moduleCommon featuresImplementing read- Write directory operations for files-Synchronous and asynchronous coexistence, asynchronous without synchronization-Fs.readfile cannot read a file that is larger than the running memory and will not use the ReadFile method if the file is too large-File large shunt read, stream- introduction of FS module-Let Fs=require (' FS ')Read files synchronously-fs.readfilesync(' path ', UTF8);Let Result=fs.r
, these exceptions should be recorded in the log, and the exception will never happen again.Use node to guard nodeThe Node-forever provides the function of guarding and log logging.Very easy to install[sudo] npm install foreverIt's easy to use.$ Forever Start Simple-server.js$ Forever List[0] simple-server.js [24597, 24596]You can also read the logForever-o out.log-e Err.log My-script.jsDaemon node with Shell startup scriptUsing node to guard the resource overhead can be a bit large, and it will
Js error when packaging android app with egret, egretandroid
Create an android app and generate an apk after compilation. The app cannot run after the mobile phone is installed. The following error is displayed:JS errorReport error assets/egret-game/libs/core/egret/context/d
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