javascript filereader example

This article mainly introduces the string split function in JavaScript, split usage, the example of the split function in JavaScript to manipulate the string of skills, very practical value, the need for friends can refer to the next This example describes the split usage of the string split function in

When the browser reads the HTML file, it wakes up the so-called "JavaScript parser" when it encounters the After this code is run, the browser will complain. Cause: because the JavaScript parser does not find any of the Var, function, parameters, and so on when parsing the JS code, the error occurs when the code is executed on a line-by-row basis because a is not found in the warehouse and a is not

This article mainly introduces the use of JavaScript to delete array elements using delete, and analyzes the usage and precautions of delete to delete array elements using examples, for more information about how to delete Arrays Using delete in JavaScript, see the following example. We will share this with you for your reference. The details are as follows: A

This article describes how to implement the time function of the calculator in Javascript and the related information of the instance. If you need it, refer to the following Javascript calculator: Series of articles: JS implementation calculator details and instance code (1) Detailed description and example of the time function of the calculator implemented

Recently encountered a problem when using kettle, you need to format the input field, the logic is complex (need to replace the specified string, and then the number of parts less than four bits of the number before 0), the kettle does not provide a direct plug-in to support complex business logic processing, So write your own code to handle it.Java code and JavaScript code can be supported in kettle, Java code I tried several times, not too stable, s

This article mainly introduces the example of inserting JavaScript code in HTML. nesting in HTML code is the basic function of JavaScript, if you need JavaScript code, refer to any part of the HTML document. But there are also the following best methods to include JavaScript

Objective Like other programming languages, JavaScript also has a number of design patterns, such as a single example mode, proxy mode, observer mode, and so on, skilled javascript design patterns can make our code logic clearer, and easier to maintain and refactor. This article will introduce the more common and practical patterns in

Example of JavaScript string object split method (used to split strings into arrays), javascriptsplit JavaScript split method The split method is used to split a string into a string array and return the array. The syntax is as follows: Copy codeThe Code is as follows:Str_object.split (separator, limit) Parameter description: Parameters Descripti

support, so it can be used separately to determine whether document is supported. all determines whether the struct is ie. If it is not ie, the W3C Dom document is used. getelementbytagname ('*') replaces all, so this method can be used in IE or Firefox. 4 rows ~ 9 rows For ( VaR E = 0 ; E All. length; e ++ ){ If (ALL [e]. classname = Classname ){Elements [elements. Length] = All [E]; Break ;}} When a tag is circled and a tag is used to determine whe

This example describes the SHA-1 encryption algorithm implemented by JavaScript. Share to everyone for your reference, specific as follows: /** * Secure Hash algorithm (SHA1) * http://www.webtoolkit.info/* **/function SHA1 (msg) {function rotate_left (n,s ) {var T4 = (n More readers interested in JavaScript-related content can view this site: "

Example of getting started with the JavaScript indexOf method (calculate the position where the specified character first appears in the string), javascriptindexof JavaScript indexOf Method The indexOf method is used to calculate the position where a specified string first appears in a string and return this value. The syntax is as follows: Copy codeThe Code is a

This article mainly introduces how to implement a date selector accurate to seconds in JavaScript. It analyzes the implementation steps and related techniques of a JavaScript date selector in the form of a complete example, involving the related operations of JavaScript on time and date, if you need a date selector, yo

Factory pattern example in javascript Design Pattern This article mainly introduces the example of the factory mode in the javascript design mode. For more information, see Original javaScript factory Method Because the attributes of an object can be dynamically defined af