Highlight curve via slider: Difference between revisions

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<jsxgraph height="500" width="600" board="board"  box="jxgbox">
Depending on the value of the slider ''s'', one of the curves is highlighted.
board = JXG.JSXGraph.initBoard('jxgbox', {originX: 250, originY: 250, unitX: 25, unitY: 25});
<jsxgraph height="500" width="500" board="board"  box="jxgbox">
var s = board.createElement('slider', [[1,8],[5,8],[0,0,1]]);
board = JXG.JSXGraph.initBoard('jxgbox', {boundingbox: [-10, 10, 10, -10]});
var s = board.create('slider', [[1,8],[5,8],[0,0,1]]);


var g = board.createElement('functiongraph', [function(x){ return x*x;}]
var g = board.create('functiongraph', [function(x){ return x*x;}],
                     {
                     {
                         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)?4:1;}
                     });
                     });
var f = board.createElement('functiongraph', [function(x){ return x+1;}]
var f = board.create('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)?4:1;}
                     });
                     });
</jsxgraph>
</jsxgraph>
===The underlying JavaScript code===
<source lang="javascript">
board = JXG.JSXGraph.initBoard('jxgbox', {boundingbox: [-10, 10, 10, -10]});
var s = board.create('slider', [[1,8],[5,8],[0,0,1]]);
var g = board.create('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.create('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]]

Latest revision as of 07:15, 8 June 2011

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

The underlying JavaScript code

board = JXG.JSXGraph.initBoard('jxgbox', {boundingbox: [-10, 10, 10, -10]});
var s = board.create('slider', [[1,8],[5,8],[0,0,1]]);

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