jquery plugin makes the picture rotate at any angle and the code is extremely simple

The Jquery.rotate.js file is introduced below and then passed through $ ("selector"). Rotate (angle), can rotate any angle,

For example $ ("#rotate-image"). Rotate (45); Put this sentence in $ (document). Ready (function () {});

is to rotate the picture with ID rotate-image 45 degrees.

However, it does not seem to appear in chrome.

Alas, the search for two hours, only to find that Chrome is too bad to get the image of the length of the width.

The solution is to put $ ("#rotate-image"). Rotate (45);

$ (window). Load (function () {}); in Chrome, because the picture is in the execution of $ (document). Ready (function () {}); The statement in is not finished loading the picture, Pit Daddy.

It can also be more convenient by calling $ ("selector"). Rotateright () and $ ("selector"). Rotateleft () to rotate 90 degrees to the right and 90 degrees to the left.

Jquery.rotate.js:

JQuery.fn.rotate =function(angle,whence) {varp = This. Get (0); //We store the angle inside the image tag for persistence        if(!whence) {P.angle= ((p.angle==undefined?0:p.angle) + angle)% 360; } Else{P.angle=angle; }                if(P.angle >= 0) {              varrotation = Math.PI * p.angle/180; } Else {              varrotation = Math.PI * (360+p.angle)/180; }          varCostheta = Math.Round (Math.Cos (rotation) * 1000)/1000; varSintheta = Math.Round (Math.sin (rotation) * 1000)/1000; //alert (costheta+ "," +sintheta);                if(document.all &&!)Window.opera) {varCanvas = document.createelement (' img '); CANVAS.SRC=p.src; Canvas.height=P.height; Canvas.width=P.width; Canvas.style.filter= "Progid:DXImageTransform.Microsoft.Matrix" (m11= "+costheta+", m12= "+ (-sintheta) +", m21= "+sintheta+", m22= "+ costheta+ ", sizingmethod= ' auto expand ')"; } Else {              varCanvas = document.createelement (' Canvas '); if(!p.oimage) {canvas.oimage=NewImage (); CANVAS.OIMAGE.SRC=p.src; } Else{canvas.oimage=P.oimage; } canvas.style.width= Canvas.width = Math.Abs (costheta*canvas.oimage.width) + Math.Abs (sintheta*canvas.oImage.height); Canvas.style.height= Canvas.height = Math.Abs (costheta*canvas.oimage.height) + Math.Abs (sintheta*canvas.oImage.width); varcontext = Canvas.getcontext (' 2d ');              Context.save (); if(Rotation <= MATH.PI/2) {Context.translate (sintheta*canvas.oimage.height,0); } Else if(Rotation <=Math.PI) {context.translate (canvas.width,-costheta*canvas.oImage.height); } Else if(Rotation <= 1.5*Math.PI) {context.translate (-costheta*canvas.oimage.width,canvas.height); } Else{context.translate (0,-sintheta*canvas.oImage.width);              } context.rotate (rotation); Context.drawimage (Canvas.oimage,0, 0, Canvas.oImage.width, canvas.oImage.height);          Context.restore (); } canvas.id=p.id; Canvas.angle=P.angle;      P.parentnode.replacechild (canvas, p); } jQuery.fn.rotateRight=function(angle) { This. Rotate (angle==undefined?90: Angle); } jQuery.fn.rotateLeft=function(angle) { This. Rotate (angle==undefined?-90:-angle); }  

jquery plugin makes the picture rotate at any angle and the code is extremely simple