function sortByFoo(tab)
{
// TODO: Fill in the code here, using Array.sort.
return tab;
}// Sort by .foo attribute
console.log(sortByFoo(
[{foo: 5}, {foo: 7}, {foo: 4}, {foo: 3}, {foo: 2}, {foo: 1}, {foo: 6}]
)[5].foo === 6);
// Does not crash on an empty array
console.log(sortByFoo([]).length === 0);
// For objects without a `foo` attribute, its value should be considered equal to '0'
console.log(sortByFoo([{foo: 42}, {bar: 7}, {foo: -5}])[1].bar === 7);
要求补充程序,使得在浏览器中显示三次true
{
// TODO: Fill in the code here, using Array.sort.
return tab;
}// Sort by .foo attribute
console.log(sortByFoo(
[{foo: 5}, {foo: 7}, {foo: 4}, {foo: 3}, {foo: 2}, {foo: 1}, {foo: 6}]
)[5].foo === 6);
// Does not crash on an empty array
console.log(sortByFoo([]).length === 0);
// For objects without a `foo` attribute, its value should be considered equal to '0'
console.log(sortByFoo([{foo: 42}, {bar: 7}, {foo: -5}])[1].bar === 7);
要求补充程序,使得在浏览器中显示三次true
tab.sort(function (t1, t2) {
return (t1.foo || 0) - (t2.foo || 0);
});
return tab;
}
// TODO: Fill in the code here, using Array.sort.
tab.sort(function(elem1, elem2){
var foo1 = elem1.foo || 0,
foo2 = elem2.foo || 0;
return foo1 > foo2 ? 1 : foo1 === foo2 ? 0 : -1;
});
return tab;
}
// Sort by .foo attribute
console.log(sortByFoo(
[{foo: 5}, {foo: 7}, {foo: 4}, {foo: 3}, {foo: 2}, {foo: 1}, {foo: 6}]
)[5].foo === 6);
// Does not crash on an empty array
console.log(sortByFoo([]).length === 0);
// For objects without a `foo` attribute, its value should be considered equal to '0'
console.log(sortByFoo([{foo: 42}, {bar: 7}, {foo: -5}])[1].bar === 7);