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Elements
Classes

Class Input

JXG.GeometryElement,JXG.CoordsElement
   ↳ JXG.Text
      ↳ Text
            ↳ Input

This element is used to provide a constructor for special texts containing a HTML form input element.

If the width of element is set with the attribute "cssStyle", the width of the label must be added.

For this element, the attribute "display" has to have the value 'html' (which is the default).

The underlying HTML input field can be accessed through the sub-object 'rendNodeInput', e.g. to add event listeners.

Defined in: input.js.
Extends Text.

Class Summary
Constructor Attributes Constructor Name and Description
 
Input(x,y,value,label)
Fields borrowed from class Text:
anchor, anchorX, anchorY, attractors, cssClass, cssDefaultStyle, cssStyle, digits, display, dragArea, fontSize, fontUnit, highlightCssClass, highlightCssDefaultStyle, highlightCssStyle, intl, isLabel, katexMacros, parse, rotate, snapSizeX, snapSizeY, useASCIIMathML, useCaja, useKatex, useMathJax
Fields borrowed from class JXG.Text:
size
Fields borrowed from class JXG.GeometryElement:
_org_type, _pos, ancestors, baseElement, board, childElements, dash, dashScale, descendants, draft, dragToTopOfLayer, dump, elementClass, elType, fillColor, fillOpacity, fixed, frozen, gradient, gradientAngle, gradientCX, gradientCY, gradientEndOffset, gradientFR, gradientFX, gradientFY, gradientR, gradientSecondColor, gradientSecondOpacity, gradientStartOffset, hasLabel, highlight, highlighted, highlightFillColor, highlightFillOpacity, highlightStrokeColor, highlightStrokeOpacity, highlightStrokeWidth, id, inherits, isDraggable, isReal, lastDragTime, layer, lineCap, methodMap, mouseover, name, needsRegularUpdate, needsUpdate, notExistingParents, numTraces, parents, precision, priv, quadraticform, rendNode, rotatable, scalable, shadow, snapToGrid, stdform, strokeColor, strokeOpacity, strokeWidth, subs, symbolic, tabindex, trace, traceAttributes, traces, transformations, transitionDuration, transitionProperties, type, visible, visProp, visPropCalc, withLabel
Fields borrowed from class JXG.CoordsElement:
coords, groups, isConstrained, needsUpdateFromParent, onPolygon, position, slideObject, slideObjects
Field Summary
Field Attributes Field Name and Description
 
Control the attribute "disabled" of the HTML input field.
 
Control the attribute "maxlength" of the HTML input field.
Fields borrowed from class Text:
anchor, anchorX, anchorY, attractors, cssClass, cssDefaultStyle, cssStyle, digits, display, dragArea, fontSize, fontUnit, highlightCssClass, highlightCssDefaultStyle, highlightCssStyle, intl, isLabel, katexMacros, parse, rotate, snapSizeX, snapSizeY, useASCIIMathML, useCaja, useKatex, useMathJax
Fields borrowed from class JXG.Text:
size
Fields borrowed from class JXG.GeometryElement:
_org_type, _pos, ancestors, baseElement, board, childElements, dash, dashScale, descendants, draft, dragToTopOfLayer, dump, elementClass, elType, fillColor, fillOpacity, fixed, frozen, gradient, gradientAngle, gradientCX, gradientCY, gradientEndOffset, gradientFR, gradientFX, gradientFY, gradientR, gradientSecondColor, gradientSecondOpacity, gradientStartOffset, hasLabel, highlight, highlighted, highlightFillColor, highlightFillOpacity, highlightStrokeColor, highlightStrokeOpacity, highlightStrokeWidth, id, inherits, isDraggable, isReal, lastDragTime, layer, lineCap, methodMap, mouseover, name, needsRegularUpdate, needsUpdate, notExistingParents, numTraces, parents, precision, priv, quadraticform, rendNode, rotatable, scalable, shadow, snapToGrid, stdform, strokeColor, strokeOpacity, strokeWidth, subs, symbolic, tabindex, trace, traceAttributes, traces, transformations, transitionDuration, transitionProperties, type, visible, visProp, visPropCalc, withLabel
Fields borrowed from class JXG.CoordsElement:
coords, groups, isConstrained, needsUpdateFromParent, onPolygon, position, slideObject, slideObjects
Method Summary
Method Attributes Method Name and Description
 
set(val)
Sets value of the input element.
 
Returns the value (content) of the input element
Methods borrowed from class JXG.Text:
_createFctUpdateText, _setText, bounds, checkForSizeUpdate, convertGeonext2CSS, convertGeonextAndSketchometry2CSS, convertSketchometry2CSS, crudeSizeEstimate, escapeTicks, expandShortMath, generateTerm, getAnchorX, getAnchorY, getNumberofConflicts, getSize, hasPoint, notifyParents, poorMansTeX, replaceSub, replaceSup, setAutoPosition, setCoords, setText, setTextJessieCode, unescapeTicks, update, updateRenderer, updateSize, updateText, utf8_decode, valueTagToJessieCode
Methods borrowed from class JXG.GeometryElement:
_set, addChild, addDescendants, addParents, addParentsFromJCFunctions, addRotation, addTicks, addTransform, animate, clearTrace, cloneToBackground, countChildren, createGradient, createLabel, draggable, formatNumberLocale, fullUpdate, generatePolynomial, getAttribute, getAttributes, getLabelAnchor, getName, getParents, getProperty, getSnapSizes, getTextAnchor, getType, handleSnapToGrid, hide, hideElement, labelColor, noHighlight, normalize, prepareUpdate, remove, removeAllTicks, removeChild, removeDescendants, removeTicks, resolveShortcuts, setArrow, setAttribute, setDash, setDisplayRendNode, setLabel, setLabelText, setName, setParents, setPosition, setPositionDirectly, setProperty, show, showElement, snapToPoints, updateVisibility, useLocale
Methods borrowed from class JXG.CoordsElement:
_anim, addAnchor, addConstraint, Dist, free, handleAttractors, handleSnapToPoints, makeGlider, moveAlong, moveTo, popSlideObject, setGliderPosition, setPositionByTransform, updateConstraint, updateCoords, updateGlider, updateGliderFromParent, updateTransform, visit, X, XEval, Y, YEval, Z, ZEval
Events borrowed from class JXG.GeometryElement:
attribute, attribute:key, down, drag, keydrag, mousedown, mousedrag, mousemove, mouseout, mouseover, mouseup, move, out, over, pendown, pendrag, penup, touchdown, touchdrag, touchup, up
Class Detail
Input(x,y,value,label)
Parameters:
{number|function_number|function_String_String|function} x,y,value,label
Parent elements for input elements.

x and y are the coordinates of the lower left corner of the text box. The position of the text is fixed, x and y are numbers. The position is variable if x or y are functions.

The default value of the input element must be given as string.

The label of the input element may be given as string or function.



Examples:
 // Create an input element at position [1,4].
 var input = board.create('input', [0, 1, 'sin(x)*x', 'f(x)='], {cssStyle: 'width: 100px'});
 var f = board.jc.snippet(input.Value(), true, 'x', false);
 var graph = board.create('functiongraph',[f,
         function() {
           var c = new JXG.Coords(JXG.COORDS_BY_SCREEN,[0,0],board);
           return c.usrCoords[1];
         },
         function() {
           var c = new JXG.Coords(JXG.COORDS_BY_SCREEN,[board.canvasWidth,0],board);
           return c.usrCoords[1];
         }
       ]);

 board.create('text', [1, 3, '<button onclick="updateGraph()">Update graph</button>']);

 var updateGraph = function() {
     graph.Y = board.jc.snippet(input.Value(), true, 'x', false);
     graph.updateCurve();
     board.update();
 }

				
				
// Add the `keyup` event to an input field
var A = board.create('point', [3, -2]);
var i = board.create('input', [-4, -4, "1", "x "]);

i.rendNodeInput.addEventListener("keyup", ( function () {
   var x = parseFloat(this.value);
   if (!isNaN(x)) {
	   A.moveTo([x, 3], 100);
   }
}));


				
				
// Add the `change` event to an input field
var A = board.create('point', [3, -2]);
var i = board.create('input', [-4, -4, "1", "x "]);

i.rendNodeInput.addEventListener("change", ( function () {
   var x = parseFloat(i.Value());
   A.moveTo([x, 2], 100);
}));


				
				
  Apply CSS classes to label and input tag
    <style>
        div.JXGtext_inp {
            font-weight: bold;
        }

        // Label
        div.JXGtext_inp > span > span {
            padding: 3px;
        }

        // Input field
        div.JXGtext_inp > span > input {
            width: 100px;
            border: solid 4px red;
            border-radius: 25px;
        }
    </style>

var inp = board.create('input', [-6, 1, 'x', 'y'], {
     CssClass: 'JXGtext_inp', HighlightCssClass: 'JXGtext_inp'
});


				
                
Field Detail
{Boolean} disabled
Control the attribute "disabled" of the HTML input field.
Defined in: options.js.
Default Value:
false

{Number} maxlength
Control the attribute "maxlength" of the HTML input field.
Defined in: options.js.
Default Value:
524288 (as in HTML)
Method Detail
{JXG.GeometryElement} set(val)
Sets value of the input element.
Parameters:
{String} val
Returns:
{JXG.GeometryElement} Reference to the element.
Examples:
        var i1 = board.create('input', [-3, 4, 'sin(x)', 'f(x)='], {cssStyle: 'width:4em', maxlength: 2});
        var c1 = board.create('checkbox', [-3, 2, 'label 1'], {});
        var b1 = board.create('button', [-3, -1, 'Change texts', function () {
                i1.setText('g(x)');
                i1.set('cos(x)');
                c1.setText('label 2');
                b1.setText('Texts are changed');
            }],
            {cssStyle: 'width:400px'});


					
					

{String} Value()
Returns the value (content) of the input element
Returns:
{String} content of the input field.

Documentation generated by JsDoc Toolkit 2.4.0 on Sun Dec 10 2023 14:41:14 GMT-0000 (UTC)