Texts: Difference between revisions
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// Vertical line at x=3 | // Vertical line at x=3 | ||
var A = brd.create('point', [2, 5], {strokeWidth:1, dash:2, name: 'A_1'}); | var A = brd.create('point', [2, 5], {strokeWidth:1, dash:2, name: 'A_1'}); | ||
brd.create('text', [3, 8, function () { return 'X( | brd.create('text', [3, 8, function () { return 'X(A_1) = ' + A.X(); }]); | ||
brd.on('update', function () { | brd.on('update', function () { | ||
Revision as of 09:12, 25 April 2017
The underlying JavaScript code
var brd = JXG.JSXGraph.initBoard('jxgbox',{boundingbox: [-1,10,7,-1], axis:false, keepaspectratio:false});
// Vertical line at x=3
var A = brd.create('point', [2, 5], {strokeWidth:1, dash:2});
brd.create('text', [3, 8, function () { return 'X(A) = ' + A.X(); }]);
brd.on('update', function () {
document.getElementById('out').innerHTML = 'X(A) = ' + A.X();
});
<div id="out"></div>
