javascript sort array of objects by multiple properties” Code Answer’s
In case of JavaScript,an arrangement saves different content kinds in only one pattern.Besides few more processing speeches,a JavaScript arrangement can grasp distinct content kinds within the similar arrangements. All the items in arrangements is sometimes saved within the Random Access Memory continuously. Canst randomArray = ; console.log(randomArray); // logs: Tahseen , 1 , 0.3 , true What a JavaScript Object Is We see that JavaScript thing may be a cluster of key principals set. A secret is just distinctive or quality of some items. Classifying an arrangements of things is simply simple add JavaScript when someone is managing routine wise content.
sort array of objects by 2 key value
homes.sort(
function(a, b) {
if (a.city === b.city) {
// Price is only important when cities are the same
return b.price - a.price;
}
return a.city > b.city ? 1 : -1;
});
javascript sort array of objects multiple fields
array.sort(function(a,b){
let i = 0, result = 0;
while(i < sortBy.length && result === 0) {
result = sortBy[i].direction*(a[ sortBy[i].prop ].toString() < b[ sortBy[i].prop ].toString() ? -1 : (a[ sortBy[i].prop ].toString() > b[ sortBy[i].prop ].toString() ? 1 : 0));
i++;
}
return result;
})
javascript sort array by multiple properties
var sort_by;
(function() {
// utility functions
var default_cmp = function(a, b) {
if (a == b) return 0;
return a < b ? -1 : 1;
},
getCmpFunc = function(primer, reverse) {
var dfc = default_cmp, // closer in scope
cmp = default_cmp;
if (primer) {
cmp = function(a, b) {
return dfc(primer(a), primer(b));
};
}
if (reverse) {
return function(a, b) {
return -1 * cmp(a, b);
};
}
return cmp;
};
// actual implementation
sort_by = function() {
var fields = [],
n_fields = arguments.length,
field, name, reverse, cmp;
// preprocess sorting options
for (var i = 0; i < n_fields; i++) {
field = arguments[i];
if (typeof field === 'string') {
name = field;
cmp = default_cmp;
}
else {
name = field.name;
cmp = getCmpFunc(field.primer, field.reverse);
}
fields.push({
name: name,
cmp: cmp
});
}
// final comparison function
return function(A, B) {
var a, b, name, result;
for (var i = 0; i < n_fields; i++) {
result = 0;
field = fields[i];
name = field.name;
result = field.cmp(A[name], B[name]);
if (result !== 0) break;
}
return result;
}
}
}());
Finally we have learned that different examples show us that by which process Javascript arrange the items.