learning javascript javascript essentials for modern application development

value of the parameter, and configures the option to not have space in the share panel.While we are writing JS, we can use bit masks to achieve the same processing.We still use the above mapping table, but instead of using additive processing, we use bit processing:var WV = 16 | 4 | 1; // Identification Processing if (WV 1) { // Hide Back button }if(WV 2) { // Hide Share button } ... // omit branches of 4 and 8 if (WV +) { // share panel hide space Sharing }⑵ Native methodThat is,

,.spa-shell-main-nav{top:0;bottom:0;}. spa-shell-main-nav{width:250px;background: #eee;}. spa-x-closed.spa-shell-main-nav{width:0;}. spa-shell-main-content{left:250px;right:0;background: #ddd;}. spa-x-closed.spa-shell-main-content{left:0;}. spa-shell-foot{bottom:0;left:0;right:0;height:40px;}. Spa-shell-chat{bottom:0;right:0;width:300px;height:15px;background:red;z-index: 1;}. spa-shell-modal{margin-top:-200px;margin-left:-200px;top:50%;left:50%;width: 400px;height:400px;background: #FFFFFF; bor

+ '; ' + window.innerheight"; A -String[] Areasize = ((Javascriptexecutor) This. Webdriver). Executescript (JS). toString (). Split (";"); - theBrowserdisplayareasize[0] = integer.valueof (areasize[0]); -BROWSERDISPLAYAREASIZE[1] = integer.valueof (areasize[1]); - - returnbrowserdisplayareasize; +}From the browser's console, execute the script as shown in the results.PS: In the actual use process, if the browser window size changes, you need to regain the size of

at the same time more than one timer to execute. So always make sure a timer works. Follow: function function, the fewer parameters the better principle, so according to the above law, speed is not passed as a parameter. Take a life example: You take a taxi, tell the taxi driver has 100 yards of speed to where, is generally impossible. You can't tell Shifu how fast you're going to run. So the procedure is the same, and here the speed of the transfer parameter is removed.

; Document.body.appendChild (DIV); },8); Renderfriendlist ();Vi. Lazy Load functionThe first time you go to a branch, you override the function, and the second is not branching. varAddevent=function(elem,type,handler) {if(Window.addeventlistener) {//Non-IEAddevent=function(Elem,type,handler) {Elem.addeventlistener (Type,handler,false); } } Else if(window.attachevent) {//non-standard, only support IEAddevent=function(Elem,type,handler) {elem.attachevent (' On ' +Type,handler);

};Ten } One }; AAlert (A.B () ());//=>3OA here (the personal understanding is: First this OA is not a property, and OA does not declare VAR so the direct return is the global variable, in order to prove this I declare var oa inside this function; try structure return undefined)2.21 varOa=3;2 varA = {3Oa:2,4D |function()5 {6 return function()7 {8 return This. OA;9 };Ten } One }; AAlert (A.B () ());//=>3(Personal understanding is: Be

has been engaged in development work for more than 10 years, but has not really dabbled in web development, which in today's IT industry sounds a bit weird. From today, we will learn about the knowledge of web development in a comprehensive and deep way. Record the learning experience and key points to make a memo.Ther

The looks like this: Implement enumeration type, poker application function Createnum (p) {//constructor var enumeration = function () {Throw ' can not instantiate enumerations ';} ; Rewrite the prototype and assign the prototype to the variable proto var proto = Enumeration.prototype = {constructor:enumeration, tostring:function () {return T His.name}, Valueof:function () {return this.value;}, Tojson:function () {return this.name;}

navigation menu created by flash. 4. Dynamic Pages Using JavaScript scripts, you can access all element objects on a web page and use the object method to access and modify its attributes to achieve dynamic page effects. Typical applications include webpage-based Tetris and poker games. 5. Numerical Calculation The Javascript script uses the data type as an object and provides rich operation methods for

=" Myimg.move (1) ">P> div> img style="position:absolute;left:0px;width:80px;" id="img" src="http://tangmaru.com/content/uploadfile/201309/73b21379867707.png"/> div> body> html> But I have a question, the above code I use inline method to set the CSS method, you can access its properties in JS.But if I use embedded, how to access its Left property in JS? If anyone knows, please do not hesitate to enlighten! Thank you!Web front-end de