在AngularJS应用程序中存储永久变量

// 创建一个自定义服务
app.service('myService', function() {
  var permanentVariable = '永久变量';

  this.getPermanentVariable = function() {
    return permanentVariable;
  };

  this.setPermanentVariable = function(value) {
    permanentVariable = value;
  };
});

// 存储永久变量
localStorage.setItem('permanentVariable', '永久变量');

// 获取永久变量
var permanentVariable = localStorage.getItem('permanentVariable');

// 存储永久变量
document.cookie = 'permanentVariable=永久变量; expires=Fri, 31 Dec 9999 23:59:59 GMT';

// 获取永久变量
var cookies = document.cookie.split(';');
for (var i = 0; i < cookies.length; i++) {
  var cookie = cookies[i].trim();
  if (cookie.indexOf('permanentVariable=') === 0) {
    var permanentVariable = cookie.substring('permanentVariable='.length, cookie.length);
    break;
  }
}