11 - javascript - collection of javascript graphics library

1. JSCharts 

JS Charts is a JavaScript chart generator that requires little or no coding. JS Charts allows you to easily create charts in different templates like bar charts, pie charts or simple line graphs.
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2. PlotKit – Javascript Chart Plotting

PlotKit is a Chart and Graph Plotting Library for Javascript. It has support for HTML Canvas and also SVG via Adobe SVG Viewer and native browser support.
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3.JavaScript vector-draw library

How many times you wished if you could only draw an arrow on your web page? Or few lines here and there? Unfortunately, HTML offers nothing in this department, and using images takes bandwidth and slows down the loading of your pages.
Courtesy of Walter Zorn, you can now use JavaScript to draw objects on your web pages. Fire up your JavaScript Editor, follow the instructions below and you will be drawing shapes on your web pages in no time.

Click here to download the JavaScript vector-draw library (6KB) under LGPL license

Use the library to draw:

Lines (see example above)
Circles and ellipses / ovals (see example above)
Rectangles (see example above)
Poly-lines and polygons (see example above)
Text
Images

to be complete