Small series two days have not updated the article, the small partners are not waiting for a hurry, today began to continue our "Everyday JavaScript Learning Summary" series of articles, I hope you continue to pay attention to.
1 function calls
1. What is a functionIf you need to use the same piece of code more than once, you can encapsulate it into a function. A function is a set of statements that are allowed to be invoked at any time in your code. Each function is actually a short
Objective
Class-based objects: we all know that there is an obvious sign in object-oriented language, that is, the concept of class, we can create many objects with the same properties and methods through the class-like template. However, there is
In JavaScript, there is no support for abstract classes and interfaces. JavaScript itself is also a weakly typed language. JavaScript does not have the ability or need to do more in terms of encapsulation types. For JavaScript design pattern
1 Create a new Date object that automatically obtains the current date and time if no arguments are taken
var d = new Date ()
2 If you need to specify a specific date, you can either pass Date.parse () or date (). UTC (), returning
Although ES6 has not really released, but has been useful ES6 rewrite the program, various ES789 proposals have begun, which you dare to believe. The tide is not what I wait for the masses to catch up with.
Although the trend is too fast, but we
I hope that through this article, I can clearly improve the understanding of apply, call, bind, and list some of their magical effects to deepen memory.
Apply, call
In JavaScript, call and apply are meant to change the context in which a function
The example of this article tells the JavaScript electric dealer website snapped up the countdown effect implementation code. Share to everyone for your reference. Specifically as follows:The screenshot of the running effect is as follows:
This article describes the implementation code of the number of JavaScript statistics Web site visits. Share to everyone for your reference. Specifically as follows:The screenshot of the running effect is as follows:
Complete code:
new
A few days ago saw a thunder from the hammer of the square root code, the principle of many introduced, do not repeat.
The source code is written in C language, I think that this algorithm can also be completed in JavaScript.
function Invsqrt (
The length of the article is often not so right, if the original length of the show, then it may affect the layout of the Web page or aesthetic, this time will be based on the right amount of interception of a certain string to fit the layout, but
1. Use an array instead of an object type to represent a sequential set
The ECMAScript standard does not specify the order in which attributes are stored in the object type of JavaScript.
But in the use for.. In loops, it is true that the
The example in this article describes the way JavaScript loads an XML file. Share to everyone for your reference, specific as follows:
XML file Var uRl that needs to be read = "Jsreadxml.xml";
var xmldoc; Initialize to assign the above defined
Nonsense not much to say, directly on the code:
Also has the Operation effect chart:
is not very simple, this is the most basic page dynamic display time changes in the method, we can innovate on this
Here's the theme is this, don't pull away. This is inherently simple and always points to the current instance of the class, this cannot be assigned a value. The premise is that this cannot be separated from the class/object, which means this is a
This article illustrates the tween algorithm of JavaScript implementation and the buffering effect. Share to everyone for your reference, specific as follows:
This shows the tween algorithm and the JavaScript code for buffering effects, use it to
It is said that JavaScript is a very flexible language, which can also be said that it is a confusing language. It combines functional programming with object-oriented programming, plus dynamic language features that are incredibly powerful (in fact,
No nonsense, please see the example below.
Usage:
test1 test2
In JS can be used:
Test.innerhtml:
That is, everything from the start position of the object to the ending position, including the HTML tag.
The value of the
This article describes the JavaScript implementation of the provincial urban three-level linkage drop-down box menu code, like the usual shopping choice address, the province through the choice of dynamic loading city list, through the choice of
The strategy pattern defines the algorithm family, which is packaged so that they can be replaced by each other, and this pattern allows the algorithm to change independently from the customer who uses the rice.
First, define a simple input form:
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