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petevb/index.html

Forked from anonymous/index.html
Created December 3, 2015 22:53
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JS Bin // source http://jsbin.com/lajuri
Raw
index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>JS Bin</title>
</head>
<body>
<script id="jsbin-javascript">
console.clear();
// .count, not length
var a = {
0: { Id: "abc", Price: 10 },
1: { Id: "def", Price: 20 },
count: 2
};
// ONLY .keys works when length is NOT specified.
var a1 = Array.from(a, v => v);
console.log ("a1", a1);
var a2 = Object.keys(a).filter(k => k !== "count").map(k => a[k]);
console.log ("a2", a2);
var a3 = Array.prototype.slice.call(a, 0);
console.log ("a3", a3);
// b has a .length property.
var b = {
0: { Id: "abc", Price: 10 },
1: { Id: "def", Price: 20 },
length: 2
};
/*
// All these methods work when length is specified.
var b1 = Array.from(b, v => v);
console.log ("b1", b1);
var b2 = Object.keys(b).map(k => b[k]);
console.log ("b2", b2);
var b3 = Array.prototype.slice.call(b, 0);
console.log ("b3", b3);
*/
// what about hashes for lookup?
console.log ("**** hashtable ****");
var a4 = a2.reduce((prev, cur) => {
prev[cur.Id] = cur.Price;
return prev;
}, {});
console.log ("a4", a4);
</script>
<script id="jsbin-source-javascript" type="text/javascript">console.clear();
// .count, not length
var a = {
0: { Id: "abc", Price: 10 },
1: { Id: "def", Price: 20 },
count: 2
};
// ONLY .keys works when length is NOT specified.
var a1 = Array.from(a, v => v);
console.log ("a1", a1);
var a2 = Object.keys(a).filter(k => k !== "count").map(k => a[k]);
console.log ("a2", a2);
var a3 = Array.prototype.slice.call(a, 0);
console.log ("a3", a3);
// b has a .length property.
var b = {
0: { Id: "abc", Price: 10 },
1: { Id: "def", Price: 20 },
length: 2
};
/*
// All these methods work when length is specified.
var b1 = Array.from(b, v => v);
console.log ("b1", b1);
var b2 = Object.keys(b).map(k => b[k]);
console.log ("b2", b2);
var b3 = Array.prototype.slice.call(b, 0);
console.log ("b3", b3);
*/
// what about hashes for lookup?
console.log ("**** hashtable ****");
var a4 = a2.reduce((prev, cur) => {
prev[cur.Id] = cur.Price;
return prev;
}, {});
console.log ("a4", a4);</script></body>
</html>
Raw
jsbin.lajuri.js
console.clear();
// .count, not length
var a = {
0: { Id: "abc", Price: 10 },
1: { Id: "def", Price: 20 },
count: 2
};
// ONLY .keys works when length is NOT specified.
var a1 = Array.from(a, v => v);
console.log ("a1", a1);
var a2 = Object.keys(a).filter(k => k !== "count").map(k => a[k]);
console.log ("a2", a2);
var a3 = Array.prototype.slice.call(a, 0);
console.log ("a3", a3);
// b has a .length property.
var b = {
0: { Id: "abc", Price: 10 },
1: { Id: "def", Price: 20 },
length: 2
};
/*
// All these methods work when length is specified.
var b1 = Array.from(b, v => v);
console.log ("b1", b1);
var b2 = Object.keys(b).map(k => b[k]);
console.log ("b2", b2);
var b3 = Array.prototype.slice.call(b, 0);
console.log ("b3", b3);
*/
// what about hashes for lookup?
console.log ("**** hashtable ****");
var a4 = a2.reduce((prev, cur) => {
prev[cur.Id] = cur.Price;
return prev;
}, {});
console.log ("a4", a4);
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