javascript filereader example

Example: using JavaScript to operate strings (some string functions) to operate string values is common for developers. There are many methods to operate on a string, such as extracting part of the content from a string or determining whether a string contains a specific character. The following JavaScript Functions provide developers with all the functions they

expand multiple variables for the function) and to add a parameter as to a fixed interval that must be performed Function Throttle (method,delay,duration) { var timer=null, begin=new Date (); return function () { var context=this, args=arguments, Current=new Date ();; Cleartimeout (timer); if (current-begin>=duration) { method.apply (Context,args); begin=current; } else{ timer=settimeout (function () { method.apply (Context,args); },

The example in this article describes the method for JavaScript array traversal. Share to everyone for your reference, specific as follows: some: Returns true as long as there is an option in the array that satisfies the condition, returns False if none of the items meet the criteria, and does not iterate over the remaining elements.every: returns false as long as there is an option in the array t

This example describes the Ajax asynchronous encapsulation capabilities of native JavaScript implementations. Share to everyone for your reference, specific as follows: More readers interested in JavaScript-related content can view this site: "JavaScript Ajax Operating Skills Summary", "

Example of alert pop-up prompt box in the basic JavaScript tutorial, basic tutorial alert A prompt box is displayed for the alert command. This section provides several simple examples for beginners to learn JavaScript. The following code is an example of a pop-up prompt box: Copy codeThe Code is as follows: Save the a

First for everyone to share JS prototype Inheritance example, for your reference, the specific content as follows First, JS prototype inheritance Second, JavaScript prototype inheritance working principle JavaScript is known for its prototype inheritance, but since it defaults to providing only an instance of implementation, the new operator, the

This article is a simple example of modifying a BUTTON element property (for example: adding a property, modifying a property, modifying a color style, border style, and so on), and demonstrates JS's basic method of modifying HTML element properties, see. If you have any shortcomings, please correct me and appreciate it!More than idle statement, this on the code.The HTML source code is as follows:1 HTML>2

Example of using javascript arguments: arguments Copy codeThe Code is as follows:Copy codeThe Code is as follows: 1. In JavaScript, the arguments object is a special object, which is actually a built-in attribute of the current function. Arguments is very similar to Array, but it is not actually an Array instance. The following code can be used to prove the situa

*fact(n-1); } The following is the implementation of the CPS style: functionfact(n,ret){ if(n==0) ret(1); else fact(n-1,function(t0){ ret(n*t0)}); } Next, we will pass a callback method to "use" the function: Fact (5, function (n ){ Console. log (n); // output 120 in Firebug }) Example: tail recursion factorial Below is the tail recursive factorial: functionfact(n){ returntail_fact(n,1); } function

Example of communication between JavaScript and Macromedia Flash Original article address: www.macromedia.com/support/flash/ts/documents/java_script_comm.htm Note: Some minor operations are slightly modified. There are many similar articles, but this is very authoritative. Below are some examples of direct communication between Flash and HTML files using Javascript