diff --git a/coffee/comparison_table.coffee b/coffee/comparison_table.coffee index 0d5b047..a7b40a4 100644 --- a/coffee/comparison_table.coffee +++ b/coffee/comparison_table.coffee @@ -114,19 +114,59 @@ supportsCanvas = do -> td.addClass("green") $table -@buildComparisonTableForIf = (values)-> +@buildUnifiedComparisonTable = (values)-> comps = (new ForComparison(v) for v in values) $table = $("", class: "comparisons") - for comp in comps - $tr = $("").html($("").append("").appendTo($table) + exprClass = do -> + val = (new Function("if(#{valX.asString}){return true}else{return false}"))() + if val then "true" else "false" + $("
", class: "header row", text: comp.asString)).appendTo($table) - $td = $("", class: "cell").html($("
", html: " ")).appendTo($tr) - val = (new Function("if(#{comp.asString}){return true}else{return false}"))() - if val - $td.addClass("green") - expression = " if (#{comp.asString}) { /* #{if val then 'executes' else 'does not execute'} */ } " - $("
", class: "expression").html(expression).appendTo($tr) + $headRow = $("
").appendTo($table) + for valX, x in comps + $el = if supportsCanvas then rotateText(valX.asString) else $("", class: "rotate", text: valX.asString) + $("", class: "header col").html($el).appendTo($headRow) + + $tr = $("
", class: "row header #{exprClass}").text(valX.asString).append(":").appendTo($tr) + for valY, y in comps + [evalStr2, r2] = valX.testResults(valY, "==") + [evalStr3, r3] = valX.testResults(valY, "===") + if r2 and r3 + status = "strict-equality" + txt = "=" + else if r2 + status = "loose-equality" + txt = "≅" + else + status = "no-equality" + txt = "≠" + td = $("", class: "cell", html: "
#{txt}
").appendTo($tr) + td.data("eval2", evalStr2) + td.data("eval3", evalStr3) + if r2 and r3 + td.addClass("strict-equality") + else if r2 + td.addClass("loose-equality") + $table +@buildKeyTable = -> + $table = $("", class: "key comparisons") + rows = [ + ["no-eq", "≠", "Not equal"], + ["loose-equality", "≅", "Loose equality", """ + Often gives "false" positives like "1" is true; [] is "0" + """] + ["strict-equality", "=", "Strict equality", """ + Mostly evaluates as one would expect. + """] + ] + for [rowc, rowicon, rowtxt, rowdesc] in rows + tr = $("").appendTo $table + $("
", class: "#{rowc} cell").html("
#{rowicon}
").appendTo(tr) + td = $("		", class: "#{rowc} label").html(rowtxt) + $("

", class: "desc", html: rowdesc).appendTo(td) if rowdesc + td.appendTo(tr) + $table rotateText = (txt, cHeight=80)-> canv = document.createElement("canvas") canv.width = "25" diff --git a/index.html b/index.html deleted file mode 100644 index 7f532df..0000000 --- a/index.html +++ /dev/null @@ -1,77 +0,0 @@ - - - - - - JS Comparison Table - - - - - - - - - -

- -
-

== (negated: !=)

-

- When using two equals signs for JavaScript equality testing, some funky conversions take place. -

-
-
-

=== (negated: !==)

-

- When using three equals signs for JavaScript equality testing, everything is as is. Nothing gets converted before being evaluated. -

-
-
-

A standard IF statement. If(value) {/*- green -*/} else { /*- red -*/ }

-

Note: This row does not match up with any of the rows in the other table.

-
-
-

Moral of the story:

-

Use three equals unless you fully understand the conversions that take place for two-equals.

-
-
- - - diff --git a/simple.css b/simple.css deleted file mode 100644 index 3d605ea..0000000 --- a/simple.css +++ /dev/null @@ -1,358 +0,0 @@ -table.comparisons { - border-spacing: 0; -} -table.comparisons td.row.header { - text-align: right; - font-family: Monospace; - font-size: 15px; - font-weight: 600; - padding-right: 14px; -} -table.comparisons td.cell { - padding: 1.5px; -} -table.comparisons td.cell div { - width: 25px; - height: 25px; - border: 2px solid black; - -moz-border-radius: 3px; - -webkit-border-radius: 3px; - border-radius: 3px; - background-color: #ed9e98; - border-color: #be120d; -} -table.comparisons td.cell.green div { - background-color: #5bbe5b; - border-color: #0b6c0b; -} -table.comparisons td.header.col { - height: 90px; -} -table.comparisons td.header.col span.rotate { - position: absolute; - font-family: Monospace; - font-size: 15px; - font-weight: 600; - -moz-transform:rotate(90deg); - -webkit-transform:rotate(90deg); - -o-transform:rotate(90deg); - -ms-transform:rotate(90deg); - transform:rotate(90deg); -} -table.comparisons .expression { - font-size: 13px; - color: #666; - padding-left: 8px; -} -/* - * jQuery UI CSS Framework 1.8.9 - * - * Copyright 2011, AUTHORS.txt (http://jqueryui.com/about) - * Dual licensed under the MIT or GPL Version 2 licenses. - * http://jquery.org/license - * - * http://docs.jquery.com/UI/Theming/API - */ - -/* Layout helpers -----------------------------------*/ -.ui-helper-hidden { display: none; } -.ui-helper-hidden-accessible { position: absolute !important; clip: rect(1px 1px 1px 1px); clip: rect(1px,1px,1px,1px); } -.ui-helper-reset { margin: 0; padding: 0; border: 0; outline: 0; line-height: 1.3; text-decoration: none; font-size: 100%; list-style: none; } -.ui-helper-clearfix:after { content: "."; display: block; height: 0; clear: both; visibility: hidden; } -.ui-helper-clearfix { display: inline-block; } -/* required comment for clearfix to work in Opera \*/ -* html .ui-helper-clearfix { height:1%; } -.ui-helper-clearfix { display:block; } -/* end clearfix */ -.ui-helper-zfix { width: 100%; height: 100%; top: 0; left: 0; position: absolute; opacity: 0; filter:Alpha(Opacity=0); } - - -/* Interaction Cues -----------------------------------*/ -.ui-state-disabled { cursor: default !important; } - - -/* Icons -----------------------------------*/ - -/* states and images */ -.ui-icon { display: block; text-indent: -99999px; overflow: hidden; background-repeat: no-repeat; } - - -/* Misc visuals -----------------------------------*/ - -/* Overlays */ -.ui-widget-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; } - - -/* - * jQuery UI CSS Framework 1.8.9 - * - * Copyright 2011, AUTHORS.txt (http://jqueryui.com/about) - * Dual licensed under the MIT or GPL Version 2 licenses. - * http://jquery.org/license - * - * http://docs.jquery.com/UI/Theming/API - * - * To view and modify this theme, visit http://jqueryui.com/themeroller/?ffDefault=Trebuchet%20MS,%20Tahoma,%20Verdana,%20Arial,%20sans-serif&fwDefault=bold&fsDefault=1.1em&cornerRadius=4px&bgColorHeader=f6a828&bgTextureHeader=12_gloss_wave.png&bgImgOpacityHeader=35&borderColorHeader=e78f08&fcHeader=ffffff&iconColorHeader=ffffff&bgColorContent=eeeeee&bgTextureContent=03_highlight_soft.png&bgImgOpacityContent=100&borderColorContent=dddddd&fcContent=333333&iconColorContent=222222&bgColorDefault=f6f6f6&bgTextureDefault=02_glass.png&bgImgOpacityDefault=100&borderColorDefault=cccccc&fcDefault=1c94c4&iconColorDefault=ef8c08&bgColorHover=fdf5ce&bgTextureHover=02_glass.png&bgImgOpacityHover=100&borderColorHover=fbcb09&fcHover=c77405&iconColorHover=ef8c08&bgColorActive=ffffff&bgTextureActive=02_glass.png&bgImgOpacityActive=65&borderColorActive=fbd850&fcActive=eb8f00&iconColorActive=ef8c08&bgColorHighlight=ffe45c&bgTextureHighlight=03_highlight_soft.png&bgImgOpacityHighlight=75&borderColorHighlight=fed22f&fcHighlight=363636&iconColorHighlight=228ef1&bgColorError=b81900&bgTextureError=08_diagonals_thick.png&bgImgOpacityError=18&borderColorError=cd0a0a&fcError=ffffff&iconColorError=ffd27a&bgColorOverlay=666666&bgTextureOverlay=08_diagonals_thick.png&bgImgOpacityOverlay=20&opacityOverlay=50&bgColorShadow=000000&bgTextureShadow=01_flat.png&bgImgOpacityShadow=10&opacityShadow=20&thicknessShadow=5px&offsetTopShadow=-5px&offsetLeftShadow=-5px&cornerRadiusShadow=5px - */ - - -/* Component containers -----------------------------------*/ -.ui-widget { font-family: Trebuchet MS, Tahoma, Verdana, Arial, sans-serif; font-size: 1.1em; } -.ui-widget .ui-widget { font-size: 1em; } -.ui-widget input, .ui-widget select, .ui-widget textarea, .ui-widget button { font-family: Trebuchet MS, Tahoma, Verdana, Arial, sans-serif; font-size: 1em; } -.ui-widget-content { border: 1px solid #dddddd; background: #eeeeee url(images/ui-bg_highlight-soft_100_eeeeee_1x100.png) 50% top repeat-x; color: #333333; } -.ui-widget-content a { color: #333333; } -.ui-widget-header { border: 1px solid #e78f08; background: #f6a828 url(images/ui-bg_gloss-wave_35_f6a828_500x100.png) 50% 50% repeat-x; color: #ffffff; font-weight: bold; } -.ui-widget-header a { color: #ffffff; } - -/* Interaction states -----------------------------------*/ -.ui-state-default, .ui-widget-content .ui-state-default, .ui-widget-header .ui-state-default { border: 1px solid #cccccc; background: #f6f6f6 url(images/ui-bg_glass_100_f6f6f6_1x400.png) 50% 50% repeat-x; font-weight: bold; color: #1c94c4; } -.ui-state-default a, .ui-state-default a:link, .ui-state-default a:visited { color: #1c94c4; text-decoration: none; } -.ui-state-hover, .ui-widget-content .ui-state-hover, .ui-widget-header .ui-state-hover, .ui-state-focus, .ui-widget-content .ui-state-focus, .ui-widget-header .ui-state-focus { border: 1px solid #fbcb09; background: #fdf5ce url(images/ui-bg_glass_100_fdf5ce_1x400.png) 50% 50% repeat-x; font-weight: bold; color: #c77405; } -.ui-state-hover a, .ui-state-hover a:hover { color: #c77405; text-decoration: none; } -.ui-state-active, .ui-widget-content .ui-state-active, .ui-widget-header .ui-state-active { border: 1px solid #fbd850; background: #ffffff url(images/ui-bg_glass_65_ffffff_1x400.png) 50% 50% repeat-x; font-weight: bold; color: #eb8f00; } -.ui-state-active a, .ui-state-active a:link, .ui-state-active a:visited { color: #eb8f00; text-decoration: none; } -.ui-widget :active { outline: none; } - -/* Interaction Cues -----------------------------------*/ -.ui-state-highlight, .ui-widget-content .ui-state-highlight, .ui-widget-header .ui-state-highlight {border: 1px solid #fed22f; 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} -.ui-icon-circle-arrow-n { background-position: -160px -192px; } -.ui-icon-circle-zoomin { background-position: -176px -192px; } -.ui-icon-circle-zoomout { background-position: -192px -192px; } -.ui-icon-circle-check { background-position: -208px -192px; } -.ui-icon-circlesmall-plus { background-position: 0 -208px; } -.ui-icon-circlesmall-minus { background-position: -16px -208px; } -.ui-icon-circlesmall-close { background-position: -32px -208px; } -.ui-icon-squaresmall-plus { background-position: -48px -208px; } -.ui-icon-squaresmall-minus { background-position: -64px -208px; } -.ui-icon-squaresmall-close { background-position: -80px -208px; } -.ui-icon-grip-dotted-vertical { background-position: 0 -224px; } -.ui-icon-grip-dotted-horizontal { background-position: -16px -224px; } -.ui-icon-grip-solid-vertical { background-position: -32px -224px; } -.ui-icon-grip-solid-horizontal { background-position: -48px -224px; } -.ui-icon-gripsmall-diagonal-se { background-position: -64px -224px; } -.ui-icon-grip-diagonal-se { background-position: -80px -224px; } - - -/* Misc visuals -----------------------------------*/ - -/* Corner radius */ -.ui-corner-tl { -moz-border-radius-topleft: 4px; -webkit-border-top-left-radius: 4px; border-top-left-radius: 4px; } -.ui-corner-tr { -moz-border-radius-topright: 4px; -webkit-border-top-right-radius: 4px; border-top-right-radius: 4px; } -.ui-corner-bl { -moz-border-radius-bottomleft: 4px; -webkit-border-bottom-left-radius: 4px; border-bottom-left-radius: 4px; } -.ui-corner-br { -moz-border-radius-bottomright: 4px; -webkit-border-bottom-right-radius: 4px; border-bottom-right-radius: 4px; } -.ui-corner-top { -moz-border-radius-topleft: 4px; -webkit-border-top-left-radius: 4px; border-top-left-radius: 4px; -moz-border-radius-topright: 4px; -webkit-border-top-right-radius: 4px; border-top-right-radius: 4px; } -.ui-corner-bottom { -moz-border-radius-bottomleft: 4px; -webkit-border-bottom-left-radius: 4px; border-bottom-left-radius: 4px; -moz-border-radius-bottomright: 4px; 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-webkit-border-radius: 5px; border-radius: 5px; }/* - * jQuery UI Tabs 1.8.9 - * - * Copyright 2011, AUTHORS.txt (http://jqueryui.com/about) - * Dual licensed under the MIT or GPL Version 2 licenses. - * http://jquery.org/license - * - * http://docs.jquery.com/UI/Tabs#theming - */ -.ui-tabs { position: relative; padding: .2em; zoom: 1; } /* position: relative prevents IE scroll bug (element with position: relative inside container with overflow: auto appear as "fixed") */ -.ui-tabs .ui-tabs-nav { margin: 0; padding: .2em .2em 0; } -.ui-tabs .ui-tabs-nav li { list-style: none; float: left; position: relative; top: 1px; margin: 0 .2em 1px 0; border-bottom: 0 !important; padding: 0; white-space: nowrap; } -.ui-tabs .ui-tabs-nav li a { float: left; padding: .5em 1em; text-decoration: none; } -.ui-tabs .ui-tabs-nav li.ui-tabs-selected { margin-bottom: 0; padding-bottom: 1px; } -.ui-tabs .ui-tabs-nav li.ui-tabs-selected a, .ui-tabs .ui-tabs-nav li.ui-state-disabled a, .ui-tabs .ui-tabs-nav li.ui-state-processing a { cursor: text; } -.ui-tabs .ui-tabs-nav li a, .ui-tabs.ui-tabs-collapsible .ui-tabs-nav li.ui-tabs-selected a { cursor: pointer; } /* first selector in group seems obsolete, but required to overcome bug in Opera applying cursor: text overall if defined elsewhere... */ -.ui-tabs .ui-tabs-panel { display: block; border-width: 0; padding: 1em 1.4em; background: none; } -.ui-tabs .ui-tabs-hide { display: none !important; } diff --git a/unified.html b/unified.html new file mode 100644 index 0000000..c54013f --- /dev/null +++ b/unified.html @@ -0,0 +1,37 @@ + + + + + + JS Comparison Table + + + + + + + + +
+

Equality in JavaScript

+
+
+
+
+ + + diff --git a/unified_comparison_table.css b/unified_comparison_table.css new file mode 100644 index 0000000..5fdc8f7 --- /dev/null +++ b/unified_comparison_table.css @@ -0,0 +1,97 @@ +body { + margin: 0; +} +#content { + width: 1000px; + margin: 0 auto; +} +#table, #key { + float: left; +} +#table { + width: 720px; +} +#key { + margin-top: 120px; + width: 280px; +} + +table.comparisons { + border-spacing: 0; + color: #444; +} +table.comparisons p.desc { + margin: 0; + font-style: italic; + color: #666; + font-size: 14px; +} +table.comparisons td.row.header { + text-align: right; + font-family: Monospace; + font-size: 15px; + font-weight: 600; +} +table.comparisons td.row.header span { + color: #eee; + margin-right: -4px; +} +/*table.comparisons td.row.header.true { + background-color: #f8f8f8; +}*/ +table.comparisons td.row.header.true span { + color: #aaa; +} +table.comparisons.key td { + padding: 6px 0; +} +table.comparisons.key td.label { + padding-left: 6px; +} +table.comparisons td.cell { + padding: 1.5px; + cursor: pointer; +} +table.comparisons td.cell div { + width: 25px; + height: 25px; + background-color: #ece3e2; + border: 2px solid #cecece; + border-radius: 3px; + -moz-border-radius: 3px; + -webkit-border-radius: 3px; + text-align: center; + line-height: 27px; + color: #c9c9c9; +} +table.comparisons td.strict-equality div, table.comparisons td.loose-equality div { + border-color: #817D7D; + background-color: #dbdbdb; + color: #817D7D; +} +table.comparisons td.strict-equality div { + color: #5f5f5f; + border-color: #464646; + background-color: #818181; + font-size: 28px; + font-weight: bold; +} +table.comparisons td.header.col { + height: 90px; +} +table.comparisons td.header.col span.rotate { + position: absolute; + font-family: Monospace; + font-size: 15px; + font-weight: 600; + -moz-transform:rotate(90deg); + -webkit-transform:rotate(90deg); + -o-transform:rotate(90deg); + -ms-transform:rotate(90deg); + transform:rotate(90deg); +} +table.comparisons .expression { + font-size: 13px; + color: #666; + padding-left: 8px; +} diff --git a/js/comparison_table.js b/unified_comparison_table.js similarity index 68% rename from js/comparison_table.js rename to unified_comparison_table.js index 11da614..af5355e 100644 --- a/js/comparison_table.js +++ b/unified_comparison_table.js @@ -176,8 +176,8 @@ return $table; }; - this.buildComparisonTableForIf = function(values) { - var $table, $td, $tr, comp, comps, expression, v, val, _i, _len; + this.buildUnifiedComparisonTable = function(values) { + var $el, $headRow, $table, $tr, comps, evalStr2, evalStr3, exprClass, r2, r3, status, td, txt, v, valX, valY, x, y, _i, _j, _len, _len1, _ref, _ref1; comps = (function() { var _i, _len, _results; _results = []; @@ -190,25 +190,81 @@ $table = $("", { "class": "comparisons" }); - for (_i = 0, _len = comps.length; _i < _len; _i++) { - comp = comps[_i]; - $tr = $("").html($("").append("").appendTo($table); + exprClass = (function() { + var val; + val = (new Function("if(" + valX.asString + "){return true}else{return false}"))(); + if (val) { + return "true"; + } else { + return "false"; + } + })(); + $("
", { - "class": "header row", - text: comp.asString - })).appendTo($table); - $td = $("", { - "class": "cell" - }).html($("
", { - html: " " - })).appendTo($tr); - val = (new Function("if(" + comp.asString + "){return true}else{return false}"))(); - if (val) { - $td.addClass("green"); + $headRow = $("
").appendTo($table); + for (x = _i = 0, _len = comps.length; _i < _len; x = ++_i) { + valX = comps[x]; + $el = supportsCanvas ? rotateText(valX.asString) : $("", { + "class": "rotate", + text: valX.asString + }); + $("", { + "class": "header col" + }).html($el).appendTo($headRow); + $tr = $("
", { + "class": "row header " + exprClass + }).text(valX.asString).append(":").appendTo($tr); + for (y = _j = 0, _len1 = comps.length; _j < _len1; y = ++_j) { + valY = comps[y]; + _ref = valX.testResults(valY, "=="), evalStr2 = _ref[0], r2 = _ref[1]; + _ref1 = valX.testResults(valY, "==="), evalStr3 = _ref1[0], r3 = _ref1[1]; + if (r2 && r3) { + status = "strict-equality"; + txt = "="; + } else if (r2) { + status = "loose-equality"; + txt = "≅"; + } else { + status = "no-equality"; + txt = "≠"; + } + td = $("", { + "class": "cell", + html: "
" + txt + "
" + }).appendTo($tr); + td.data("eval2", evalStr2); + td.data("eval3", evalStr3); + if (r2 && r3) { + td.addClass("strict-equality"); + } else if (r2) { + td.addClass("loose-equality"); + } } - expression = " if (" + comp.asString + ") { /* " + (val ? 'executes' : 'does not execute') + " */ } "; + } + return $table; + }; + + this.buildKeyTable = function() { + var $table, rowc, rowdesc, rowicon, rows, rowtxt, td, tr, _i, _len, _ref; + $table = $("", { + "class": "key comparisons" + }); + rows = [["no-eq", "≠", "Not equal"], ["loose-equality", "≅", "Loose equality", "Often gives \"false\" positives like \"1\" is true; [] is \"0\""], ["strict-equality", "=", "Strict equality", "Mostly evaluates as one would expect."]]; + for (_i = 0, _len = rows.length; _i < _len; _i++) { + _ref = rows[_i], rowc = _ref[0], rowicon = _ref[1], rowtxt = _ref[2], rowdesc = _ref[3]; + tr = $("").appendTo($table); $("
", { - "class": "expression" - }).html(expression).appendTo($tr); + "class": "" + rowc + " cell" + }).html("
" + rowicon + "
").appendTo(tr); + td = $("		", { + "class": "" + rowc + " label" + }).html(rowtxt); + if (rowdesc) { + $("

", { + "class": "desc", + html: rowdesc + }).appendTo(td); + } + td.appendTo(tr); } return $table; };