我有这段代码，将输入的电话号码写入选择菜单的定义选项中，问题是当我返回或退出应用程序时，数据被删除并且列表为空。我不知道为什么以及如何解决这个问题...
var flag_beneficiary_account_number=false;
var beneficiary_account_number;
if ( $('#beneficiary_number').val().length > 2 ) {
beneficiary_account_number=$('#beneficiary_number').val();
flag_beneficiary_account_number=true;
} else {
beneficiary_account_number = $('#Beneficiary_number_select').find(":selected").html();
flag_beneficiary_account_number=false;
}
if(flag_beneficiary_account_number){
if(localStorage.getItem("Beneficiary_number_select1")!=beneficiary_account_number &&
localStorage.getItem("Beneficiary_number_select2")!=beneficiary_account_number &&
localStorage.getItem("Beneficiary_number_select3")!=beneficiary_account_number){
var select_counter = parseInt(localStorage.getItem("select-counter"));
var select_option = select_counter%3;
select_counter = select_counter+1;
localStorage.setItem("select-counter",select_counter);
switch (select_option){
case 0:
localStorage.setItem("Beneficiary_number_select1",beneficiary_account_number);
$('#Beneficiary_number_select1').val(beneficiary_account_number);
$('#Beneficiary_number_select1').html(beneficiary_account_number);
break;
case 1:
localStorage.setItem("Beneficiary_number_select2",beneficiary_account_number);
$('#Beneficiary_number_select2').val(beneficiary_account_number);
$('#Beneficiary_number_select2').html(beneficiary_account_number);
break;
case 2:
localStorage.setItem("Beneficiary_number_select3",beneficiary_account_number);
$('#Beneficiary_number_select3').val(beneficiary_account_number);
$('#Beneficiary_number_select3').html(beneficiary_account_number);
break;
default:
break;
}
}
}
最佳答案
当您最终添加 cordova 标记时，我正在编辑您的问题。事情变得很清楚，所以你需要记住，在 Cordova 中，要让 localStorage 工作，请以这种方式使用它
// To store
window.localStorage.setItem("Beneficiary_number_select2", beneficiary_account_number);
//and to access the value, use
window.localStorage.localStorage
.getItem("Beneficiary_number_select2");
而是 localStorage.getItem("Beneficiary_number_select2")
关于javascript - localStorage，选择菜单中的选项数据在更改页面时消失，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/30783083/