how to make text editor in javascript

annoying thing about javascript loops is that variables are fully iterated first. That is to say: if you use alert to create the variable I in every loop, it is a value at any time and is equal to the maximum value. Therefore, the sub variable I defined above plays a role. Because the sub variable is processed only after waiting, no matter how many times it loops, it must wait until a certain amount of time + = 1. It is no longer appropriate to use

'; ODiv.style.top = Odivtop +' px '; }; Odiv.onmouseup = function() {Odiv.onmousemove =NULL; Odiv.onmouseup =NULL; Odiv.releasecapture (); }; Odiv.setcapture ();return false;//block default events, fix bugs in Firefox}; };Now you can solve the problem of text selection. Finally we sit down compatible, in fact this setcapture () is incompatible, placed in other browsers is wrong.So very simple, we just need to merge this wit

How do I make clocks using IFRAME tags and javascript? How do you make a clock? The effect is as follows:The clock here will go on and on, but the page below is not going to be, so we can achieve the desired effect. Below I will be divided into the following aspects: The date reference type in JavaScript S

; script type= "Text/javascript" src= "http://api.map.baidu.com/api?v=1.3" > - Linkrel= "stylesheet"type= "Text/css"href= "Bmap.css" /> Head> Body> Divstyle= "left:0;top:0;width:100%;height:100%;p osition:absolute;"ID= "Container">Div> Body>HTML>Scripttype= "Text/

and register without having to go to another page ). This is a valuable script. 9. tjpzoom 3-image magnifierTjpzoomThis allows you to partially zoom in a high-definition image. Press and drag the mouse to change the size of the enlarged area. 10. mootools tipsMootools tipsAs part of the mootools framework, it allows you to provide users with a highly configurable tooltip. When you hover your mouse over a link or image, some additional prompts about this element will be displayed on the screen.Y

From Nine Javascript Gotchas, the following are Nine traps that JavaScript is prone to mistakes. Although it is not a very profound technical problem, please note that it will make your programming easier, that is, make life easier. I will give some comments on some traps. 1. last comma For example, in this Code Sectio

Javascript checks the image size and does not make large images break the page. You only need to write a simple function to determine the image size using Javascript. Of course, many people may not know how to write this function. I found that using ASP to determine the image size is more complicated than that of taobaomao. When I judge the image size, I still ne

10 Essential Sublime Text plug-ins for JavaScript developers, including javascriptsublime Sublime Text is almost an essential application for any developer in its toolbox. Sublime Text is a cross-platform, highly customizable, and advanced Text editor. It is suitable for ful

In "Make JavaScript easy to support function overload (Part 1-design)," we designed a method that describes the function overload in JavaScript, which relies on a static class called Overload, and now we're going to look at how to implement this static class. Identifying text signatures Let's take a look at the overl

of the image.Demo Code:DOCTYPE html>Html>HeadLang= "en">MetaCharSet= "UTF-8">Title>Title>Head>Body>CanvasId= "MyCanvas"Width= "600"Height= "400"Style= "Background: #000"> Browser does not support canvasCanvas>Body>ScriptType= "Text/javascript">VarCanvas=document.getElementById ("MyCanvas");VarCTx=Canvas.getcontext ("2d");VarImage=NewImage (); Image.src=‘/webworkspace/echartdemo/images/star.png‘;VarPixels=[

Identifying text Signatures Let's take a look at the overload use cases mentioned in the previous article: Copy Code code as follows: var extend = overload . Add ("*, ...", function (target) {}) . Add ("Boolean, *, ...", function (deep, target) {}); We allow the user to enter a string representing the signature of an overload. When the user calls the function, we need to take the user input parameter instance to compa

Some advanced applications of Javascript drag-and-drop-by-line code analysis make it easy for you to drag the code line by line. Let's take a look at the problems that may occur when there is something around the drag? There won't be any problems in the advanced browser. Let's test it under IE7 and the problem will come out. We can clearly see that all texts have been selected. The user experience is poor

the readonly control can be selected and the right-click menu of the browser can be displayed, so textarea is excluded during processing. If it is in the disabled status, double-click and mouse-click events are not triggered,I haven't thought of any other solutions for the moment.. 2. The text of the select control cannot be selected. However, an event can be triggered when the select control is disabled. 3. After selection, you cannot right-click to

JavaScript -- How to Make the elements in a webpage editable?In IE5.5, you can set the edit attribute of an element. Syntax:Object. contentEditable [= sEditable];The sEditable is one of the following three:◇ Inherit◇ False◇ True Example: [You can edit, modify, and enter the following text!]

javascript| Mouse | Web page If you don't understand it, expect 1-2 weeks to finish it .... Do not look too carefully, and then see the back when you do not know how to look at these things better. 1. Foreword and preparatory work There is no introduction to the use of software in a class of things. If you think the handwriting code is in the pretending person can go out, thank you. First you have to have a computer. Then it should be loaded with Wind

returnMath.floor (Math.random () * (b-a)) +A; - } - //execute an event when the button is clicked first A-1 then randomly get an angle number and then assign the value to the IMG element and then execute a callback function. If the code inside the callback function is directly put into the bug, but I don't know what the callback function is, there are a couple of lucky draw opportunities thebtn1.onclick=function(){ -A-=1; -x + = parseint (Random (10, 30) * 60); -Im

I got a question about the text box ReadOnly property this morning. Specifically: Use JavaScript to modify this property. Just start in the JavaScript is dead or alive can not get the value of this property, no way, to search the Internet. Not carefully, it is felt that I wrote with them no difference ah, I do not believe, but also do not

JavaScript enables the automatic addition of sources (copyright information) when copying the content of an article. Must be the webmaster in the update of the article, hard to write their own articles do not want to be copied and pasted, others do not want to mark the source, then we find a way to make their copy of the article automatically added when the article out, that is, copyright information, altho

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The first two talk I told you how to make the characters move, so today we will see how to achieve The imitation of "kingdoms Cao Chuan" character situation dialogue. The specific links I write are below. Development with JavaScript-"Kingdoms Cao Chuan"-Open source Lectures (ii)-Let the target person move http://blog.csdn.net/yorhomwang/article/details/7984576 development with