TA貢獻1712條經驗 獲得超3個贊
if (old_key !== new_key) {
Object.defineProperty(o, new_key,
Object.getOwnPropertyDescriptor(o, old_key));
delete o[old_key];}Object.prototype
TA貢獻1871條經驗 獲得超8個贊
Object
Object.prototype.renameProperty = function (oldName, newName) {
// Do nothing if the names are the same
if (oldName == newName) {
return this;
}
// Check for the old property name to avoid a ReferenceError in strict mode.
if (this.hasOwnProperty(oldName)) {
this[newName] = this[oldName];
delete this[oldName];
}
return this;};ECMAScript 5特異性
Object.defineProperty(
Object.prototype,
'renameProperty',
{
writable : false, // Cannot alter this property
enumerable : false, // Will not show up in a for-in loop.
configurable : false, // Cannot be deleted via the delete operator
value : function (oldName, newName) {
// Do nothing if the names are the same
if (oldName == newName) {
return this;
}
// Check for the old property name to
// avoid a ReferenceError in strict mode.
if (this.hasOwnProperty(oldName)) {
this[newName] = this[oldName];
delete this[oldName];
}
return this;
}
});
TA貢獻1859條經驗 獲得超6個贊
delete Object.assign(o, {[newKey]: o[oldKey] })[oldKey];const newObject = {};delete Object.assign(newObject, o, {[newKey]: o[oldKey] })[oldKey];舉報