如何從本地存儲中刪除數組中的一個元素？

Question

var details = [{
    "Name": "Bhavani",
        "Phone No": ["123456", "123456"],
        "Email Id": ["mamata@gmail.com", "mamata@yahoo.com"],
        "Birthday": "21/16/22/33"
}, {
    "Name": "Mamata",
        "Phone No": ["123456", "123456"],
        "Email Id": ["mamata@gmail.com", "mamata@yahoo.com"],
        "Birthday": "21/16/22/33"
}];

function add() {
    localStorage.setItem('contacts', JSON.stringify(details));
    str = localStorage.getItem("contacts");
}

function removeItems(){
  var s = localStorage.removeItem("contacts");
  alert(s);
}

JSFiddle演示 。

如何刪除數組中的一個元素而不刪除整個本地存儲？

Answer 1

問題下我的評論的代碼示例-從Mamata刪除電子郵件ID：

var details = JSON.parse(localStorage.getItem('contacts'));
details.filter(function(e) {
  return e.Name === "Mamata"
}).forEach(function(element) {
  delete element["Email Id"];
});
localStorage.setItem('contacts', JSON.stringify(details));

編輯 ：如果要刪除整個記錄而不是其中的字段，則應這樣做：

var details = JSON.parse(localStorage.getItem('contacts'));
details = details.filter(function(e) {
  return e.Name !== "Mamata"
});
localStorage.setItem('contacts', JSON.stringify(details));

Answer 2

localStorage.setItem("contacts",localStorage.getItem("contacts").split(',').splice(...));