v1.0.2
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README.md
13
README.md
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@ -9,11 +9,18 @@ This works in both the Browser and SSJS.
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require('remedial');
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Notes
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----
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Usage / API
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This uses the ["Flanagan / Miller device"](http://groups.google.com/group/nodejs/msg/0670a986a2906aeb) rather than the Crockford's original.
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There is [a more specific typeof()](http://rolandog.com/archives/2007/01/18/typeof-a-more-specific-typeof/) implementation worthy of consideration.
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Globals
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====
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typeOf(o)
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----
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Since JavaScript is a loosely-typed language, it is sometimes necessary to examine a value to determine its type. (This is sometimes necessary in strongly typed languages as well.) JavaScript provides a typeof operator to facilitate this, but typeof has problems.
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@ -36,8 +43,8 @@ isEmpty(v)
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isEmpty(v) returns true if v is an object containing no enumerable members.
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**String Methods**
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----
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String Methods
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====
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JavaScript provides some useful methods for strings, but leaves out some important ones. Fortunately, JavaScript allows us to add new methods to the basic types.
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@ -5,9 +5,7 @@
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var s = typeof value;
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if (s === 'object') {
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if (value) {
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if (typeof value.length === 'number' &&
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!(value.propertyIsEnumerable('length')) &&
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typeof value.splice === 'function') {
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if ((/array/i).test(({}).toString.call(value))) {
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s = 'array';
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}
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} else {
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@ -3,7 +3,9 @@
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"contributors": [ "Douglas Crockford <douglas@crockford.com>" ],
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"dependencies": {},
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"description": "Deprecated. Utilities for ES3, most of which have been adopted or superseded in ES5.1. Adapted from Douglas Crockford's Remedial JavaScript",
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"engines": { "node": "*" },
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"engines": {
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"node": "*"
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},
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"keywords": [
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"util",
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"isEmpty",
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@ -17,5 +19,5 @@
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"main": "./lib/remedial",
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"name": "remedial",
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"homepage": "https://git.coolaj86.com/coolaj86/remedial.js",
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"version": "1.0.1"
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"version": "1.0.2"
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}
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@ -0,0 +1,87 @@
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// Firefox was tested using persevere's global-es5 for es5 emulation
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(function () {
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require('../lib/remedial');
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a = [];
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a[2] = 27;
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console.log(a);
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// Expected: [undefined, undefined, 27];
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// Node/V8: [ 27 ];
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// FF3: [undefined, undefined, 27];
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console.log(a.length);
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// 3
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console.log(typeOf(a));
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// array
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b = Object.create([]);
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b[2] = 27;
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console.log(b);
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// Expected: [undefined, undefined, 27];
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// Node/V8: [ 27 ]
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console.log(b.length);
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// Expected: 3
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// Node/V8/FF: 0
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console.log(typeOf(b));
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// Expected: Object
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// Node/V8/FF: array (with Crockford's original)
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c = Object.create([]);
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c.push();
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c.push();
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c.push(27);
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console.log(c);
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// Expected: [undefined, undefined, 27]
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// Node: [ 27, length: 1 ]
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// FF: []
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console.log(c.length);
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// Expected: 3
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// Node/V8/FF: 1
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console.log(typeOf(c));
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// Expected: object
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// Node/V8/FF: object
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d = Object.create(Array);
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// FF: Error: typeof prototype[function] != 'object'
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d[2] = 27;
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console.log(d);
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// Expected: [undefined, undefined, 27];
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// Node/V8: { '2': 27 }
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console.log(d.length);
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// Expected: 3
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// Node/V8/FF: 1
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console.log(typeOf(d));
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// Expected: object
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// Node/V8: object
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}());
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/*
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Exact Node Output:
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[ 27 ]
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3
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array
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[ 27 ]
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0
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array
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[ 27, length: 1 ]
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1
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object
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Exact FF (firebug) Output (expanded):
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[undefined, undefined, 27]
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> 2 27
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3
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array
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[]
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> 2 27
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0
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array
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[27]
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> 0 27
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length 1
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1
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object
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*/
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