JavaScript arguments to implement variable-length parameters.
In C #, there are variable long parameter params[], but in JS, how to implement this variable parameter?
Variable-length parameters
Arguments is a very good solution and has never
JavaScript Italics method
The Italics method returns the (italic) string defined using the HTML I tag property. The syntax is as follows:
Copy Code code as follows:
Str_object.italics ()
Tip: This method does not conform
Original articles, reproduced please specify the source cloud Habitat CommunityFound to crack a variety of JavaScript encryption reverse thinking method, we have a good way to all the threads AHRecently found a code, encrypted 5 layers around, I
String interception
1. Substring ()
xString.substring(start,end)
SUBSTRING () is the most commonly used method of string interception, which receives two parameters (arguments cannot be negative), the start and end positions to intercept, and
This section of HTML is shown in the following example
Copy Code code as follows:
Baidu
1. Get and set element attributes through the properties of the HtmlElement type (object)
Copy Code code as follows:
The movement of a div is actually a change in its distance from the browser's border. If the rate of change is certain, it is uniform motion; if the rate of change is not necessarily, then it is variable motion. When the rate of change is
The usual array is populated with an implicit or display of the specified array subscript, but the array in JS can be assigned the element in the form of a name, which forms an associative array, such as:
Copy Code code as follows:
Development, interrupt the reference relationship between objects, just want the next copy of the situation everywhere, clone an object is inevitable.
In JavaScript, the simple way is to use the JSON function, stringify the object into a string,
Cookies are small text files that Web designers place on the client (browser), cookies can not only implement the Save password function, but also save the latest browsing record through cookies to increase the user experience.
In the login
Any programming language has its own language core, and like many programming languages, JavaScript has its own language core. The core of language is generally called the most fundamental part of JavaScript. What is called the beginning of
The looks like this:
javascript three ways to define arrays
The above is a small series of JavaScript for you to define the array of three methods (new Array (), new Array (' X ', ' y ') all the content, I hope that we
Object Section
Object type
Object is an unordered collection that can hold objects of any type and all other objects are inherited from this object.
There are two ways to create an object type, one is by using the new operator, and one is the
In the traditional sense, the JavaScript function is thought to pass the reference pass (also known as the Pointer Pass), and some people think that the value transfer and the reference pass have. So JS parameter transmission in the end is how it?
Comparative judgment
Comparison judgment is to compare two values and return a Boolean value that indicates whether the comparison condition is met. JavaScript provides a total of 8 comparison operators, and here's the difference between the strict
JavaScript Learning notes One of the jquery writing pictures equal scaling and preload
In the past for JavaScript is always used in the page to write a few functions, basically do not take into account the encapsulation and reuse of functions, a
The features developed mainly involve instant code coloring (codecoloring) and Syntax hints (codehints), which will be summarized later in the feature development issue or provide source code.The following are examples and summaries of the
In JavaScript, we often see this code: A comparison of a variable with a null (which is problematic) to determine whether a variable is given a reasonable value. Like what:
var Controller = {
process:function (items) {
if (items!== null)
JavaScript functions can be divided into five categories altogether:• General functions• Array functions• Date function• Mathematical Functions• String Functions1. General functionsThe JavaScript general functions include the following 9 functions:(1
A Use the alert () and document.write () methods to monitor variable values
If you want to break the code and monitor the value of the variable, use the alert () method;
If you need to see a lot of values, use the document.write () method to avoid
Copy code code as follows:
var ForEach = (function () {
Traversal of arrays and pseudo arrays
var _array_foreach = function (Array, block, context) {
if (array = = null) return;
Special handling of String
if (typeof array = = '
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