Cheer up, first as a non-computer professional graduate, I think. This want to learn computer, or rely on their own, trained is not necessarily Daniel. The non-computer is not necessarily all rookie ... Well, let's start with the first installment of today's ———— install LinuxThis time is done in the VBox virtual machine. Personal feeling vbox more useful than VMware, the main occupation system resources are not many. Take CentOs5.5 as an example----s
javascript--the client Web browser scripting language.What is language?Used for communication, with complete syntax and explicit semantics .A complete set of JavaScript implementations consists of three different parts:1,ecmasript (CORE)Just a description that defines all the properties, methods, and objects of the scripting language. That is, a language has a clear code of use and use of the method.It provides the syntax, operators, and basic objects of JavaScript that are necessary to implemen
Four cases of this in JavaScript (non-strict mode)
1. When this function is the event handler, this points to the event source.2. When this function is a constructor, this points to the new object.3. This refers to the object to which the function belongs.4, when this function does not belong to the object, this point to the Window object"Utf-8"/> "Box" class="Box"style="height:100px, width:100px, background: #f3f3f3;">Learn from
writing if in the window.onload call, proposed to put the anonymous function,//related to the scope of the problem, JS run to this error, can also adjust the location of JS reference Timer:Syntax: setinterval (function or code string, specified time (ms));Executes a function or a string of code in a specified period (in milliseconds).Clear Timer: clearinterval ();var num = 6;var timer = setinterval (function () {console.log (--num); if (num = = 0) {clearinterval (timer);}}, 1000);
Hello everyone, here is "learn the Web series from scratch" and synchronize updates at the following address ...
Github:github.com/daotin/web
Public number: The top of the Web front
Blog Park: http://www.cnblogs.com/lvonve/
csdn:blog.csdn.net/lvonve/
Here I will start with the Web front End 0 Foundation, step-up learning web-related knowledge points, during the period will also sh
Hello everyone, here is "learn the Web series from scratch" and synchronize updates at the following address ...
Github:github.com/daotin/web
Public number: The top of the Web front
Blog Park: http://www.cnblogs.com/lvonve/
csdn:blog.csdn.net/lvonve/
Here I will start with the Web front End 0 Foundation, step-up learning web-related knowledge points, during the period will also sh
Hello everyone, here is "learn the Web series from scratch" and synchronize updates at the following address ...
Github:github.com/daotin/web
Public number: The top of the Web front
Blog Park: http://www.cnblogs.com/lvonve/
csdn:blog.csdn.net/lvonve/
Here I will start with the Web front End 0 Foundation, step-up learning web-related knowledge points, during the period will also sh
directory: If the data stored in the block is a table data, the table directory stores information about the table.3, Row directory4, free space:5. Row space: The storage space already used in the block, which stores the data of the table or index in the row space.1.4. New features of Oracle 11g1.4.1, database Management Section1. Program ManagementAllows a user to fix a query plan for a particular statement, with no statistical data changes or changes to the database version, without altering
Model: Use "graph structure" to represent the connection between data.Object-oriented Model: Use "Object" to represent the connection between data.(3), physical data modelIt is a model for the representation of computer physics.The three main elements of the data model: data structure, manipulation, and integrity constraints.1.2.6, data integrity constraints(1), Entity integrityIf property A is the primary property of the basic relationship r, property A cannot take a null value.(2), referentia
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