https://www.cnblogs.com/gaoht/p/9850449.html
function deteleObject(obj) {
var uniques = [];
var stringify = {};
for (var i = 0; i < obj.length; i++) {
var keys = Object.keys(obj[i]);
keys.sort(function(a, b) {
return (Number(a) - Number(b));
});
var str = '';
for (var j = 0; j < keys.length; j++) {
str += JSON.stringify(keys[j]);
str += JSON.stringify(obj[i][keys[j]]);
}
if (!stringify.hasOwnProperty(str)) {
uniques.push(obj[i]);
stringify[str] = true;
}
}
uniques = uniques;
return uniques;
}
var arr7 = [
{a: 1, url: 2},
{a: 1, url: 2},
{a: 1, url: 2},
{b: 1, url: 3},
{a: 1, url: 2},
{c: 1, url: 2},
{a: 1, url: 2},
{d: 1, url: 2}
]
console.log('7777:',this.deteleObject(arr7));