Question

我收到此错误，

Practice.html：格式化：20 Uncaught TypeError： queueArray.push不是函数 在Queue.add（Practice.html：格式：20）在Practice.html：格式化：30

但推不应该是一个功能。它应该是在数组上执行的方法。那么这意味着什么？

 var tickerArray = ['BP', 'AMZN', 'EARK'];
    //also tried putting queueArray here because that would make it global, so i guess it isnt a scope issue?

    function Queue() {
        this.top = 0; //first item in the stack
        var queueArray = []; //array to hold items
    }

    Queue.prototype.add = function(obj) {
        queueArray.push(obj);
    }

    Queue.prototype.get = function() {
        return queueArray.splice(this.top, 1);
    }


    var queueArray = new Queue();

    for (i = 0; i < tickerArray.length; i++) {
        queueArray.add(tickerArray[i]);
    }

    console.log(q.get());

Answer 1

将queueArray设为this.queueArray，将return this.queueArray设置为.get()

＆＃13;

var tickerArray = ['BP', 'AMZN', 'EARK'];

function Queue() {
  this.top = 0; //first item in the stack
  this.queueArray = []; //array to hold items
}

Queue.prototype.add = function(obj) {
  this.queueArray.push(obj);
}

Queue.prototype.get = function() {
  this.queueArray.splice(this.top, 1);
  return this.queueArray; // `return` `this.queueArray` from the function
}

var queueArray = new Queue();

for (i = 0; i < tickerArray.length; i++) {
  queueArray.add(tickerArray[i]);
}

console.log(queueArray.get());

＆＃13;

JS队列数组调试错误

1 个答案: