将一种方法中的值获取到另一种方法中

Question

在一种方法中创建的值可以通过调用在另一种方法中使用，但在我的情况下我得到一个错误。请指教

(function() {
      var s = {
        appendToFilter: function(bread, value) {
          console.log(bread); // value is 20
          console.log(value); // value is 40
          return value; // Need this value
        },
        //Append to container in order to render filters
        appendToContainer: function(container, v, state) {
            // I need the value returned in appendToFilter here
            // I tried using global variable and tried to call appendToFilter here, no luck
            // since it depends on flow of the methods is there any work around to get the value
        },  

        getToFilter: function(value) {
          var x = 20;
          var y = 40;
          s.appendToFilter(x,y);
        }
      }

    });

Answer 1

只需在函数外声明一个全局变量。你可以在任何地方访问它。

var newVal;
(function() {

      var s = {
        appendToFilter: function(bread, value) {
          console.log(bread); // value is 20
          console.log(value); // value is 40
          newVal=value;
          return value; // Need this value
        },
        //Append to container in order to render filters
        appendToContainer: function(container, v, state) {
            console.log(newVal);
        },  

        getToFilter: function(value) {
          var x = 20;
          var y = 40;
          s.appendToFilter(x,y);
        }
      }

    });

Answer 2

(function() {
      var s = {
        appendToFilter: function(bread, value) {
          console.log(bread); 
          console.log(value);
          return value; 
        },
        //Append to container in order to render filters
        appendToContainer: function(container, v, state) {
            var value = s.appendToFilter(10, 20); // call it as you used it getToFilter function
    console.log(value)

        },  

        getToFilter: function(value) {
          var x = 20;
          var y = 40;
          s.appendToFilter(x,y);
        }
      }

    });