Highlight curve via slider: Difference between revisions

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Depending on the value of the slider ''s'', one of the curves is highlighted.
<jsxgraph height="500" width="600" board="board"  box="jxgbox">
<jsxgraph height="500" width="600" board="board"  box="jxgbox">
board = JXG.JSXGraph.initBoard('jxgbox', {originX: 250, originY: 250, unitX: 25, unitY: 25});
board = JXG.JSXGraph.initBoard('jxgbox', {originX: 250, originY: 250, unitX: 25, unitY: 25});
Line 6: Line 7:
                     {
                     {
                         strokeColor:function(){ return (s.Value()<0.5)?'red':'blue';},
                         strokeColor:function(){ return (s.Value()<0.5)?'red':'blue';},
                         strokeWidth:function(){ return (s.Value()<0.5)?3:1;},
                         strokeWidth:function(){ return (s.Value()<0.5)?4:1;},
                     });
                     });
var f = board.createElement('functiongraph', [function(x){ return x+1;}],
var f = board.createElement('functiongraph', [function(x){ return x+1;}],
                     {
                     {
                         strokeColor:function(){ return (s.Value()>=0.5)?'red':'blue';},
                         strokeColor:function(){ return (s.Value()>=0.5)?'red':'blue';},
                         strokeWidth:function(){ return (s.Value()>=0.5)?3:1;},
                         strokeWidth:function(){ return (s.Value()>=0.5)?4:1;},
                     });
                     });
</jsxgraph>
</jsxgraph>
===The underlying JavaScript code===
<source lang="javascript">
var s = board.createElement('slider', [[1,8],[5,8],[0,0,1]]);
var g = board.createElement('functiongraph', [function(x){ return x*x;}],
        {
          strokeColor:function(){ return (s.Value()<0.5)?'red':'blue';},
          strokeWidth:function(){ return (s.Value()<0.5)?4:1;},
        });
var f = board.createElement('functiongraph', [function(x){ return x+1;}],
        {
          strokeColor:function(){ return (s.Value()>=0.5)?'red':'blue';},
          strokeWidth:function(){ return (s.Value()>=0.5)?4:1;},
        });
</source>
[[Category:Examples]]

Revision as of 12:16, 2 June 2009

Depending on the value of the slider s, one of the curves is highlighted.

The underlying JavaScript code

var s = board.createElement('slider', [[1,8],[5,8],[0,0,1]]);

var g = board.createElement('functiongraph', [function(x){ return x*x;}],
         {
          strokeColor:function(){ return (s.Value()<0.5)?'red':'blue';},
          strokeWidth:function(){ return (s.Value()<0.5)?4:1;},
         });
var f = board.createElement('functiongraph', [function(x){ return x+1;}],
         {
          strokeColor:function(){ return (s.Value()>=0.5)?'red':'blue';},
          strokeWidth:function(){ return (s.Value()>=0.5)?4:1;},
         });