Question

有一个外部库正在发送一些响应，其中javascript回调作为字符串函数名传递。我希望能够在调用函数回调时执行回调函数：

function LibController(myCallback) {
  this.libObject = new ThirdPartyLibrary("onTPLCallback");
}

window.onTPLCallback = function () {
  // Call to myCallback() in here
};

function AnotherObject() {
  this.myLibController = new LibController(function () {
    // Callback stuff here
  });
}



// Library object emulation
function ThirdPartyLibrary(callback) {
  var sc = document.createElement('script');
  sc.innerHTML = 'javascript:' + callback + '();';
  document.head.appendChild(sc);
}

有可能吗？（jQuery不可用）

Answer 1

您可以尝试将window.onTPLCallback置于LibController构造函数中（必须在构造ThirtPartyLibrary之前放置）：

function LibController(myCallback) {
  window.onTPLCallback = function () {
    myCallback();
  };

  this.libObject = new ThirdPartyLibrary("onTPLCallback");
}

function AnotherObject() {
  this.myLibController = new LibController(function () {
    // Callback stuff here
  });
}



// Library object emulation
function ThirdPartyLibrary(callback) {
  var sc = document.createElement('script');
  sc.innerHTML = 'javascript:' + callback + '();';
  document.head.appendChild(sc);
}

javascript函数名称为字符串

1 个答案: