前缀操作中的左侧表达式无效

时间:2015-06-30 17:32:47

标签: javascript

我有一个javascript,当点击一个按钮时我应该创建一个文本文件的下载链接,但是我得到一个"无效的左侧表达式"错误。

js看起来像这样:

(function () {
  var textFile = null,
  var makeTextFile = function (text) {
    var data = new Blob([text], {type: 'text/plain'});

    // If we are replacing a previously generated file we need to
    // manually revoke the object URL to avoid memory leaks.
    if (textFile !== null) {
      window.URL.revokeObjectURL(textFile);
    }

    textFile = window.URL.createObjectURL(data);
    return textFile;
  };

  var create = document.getElementById('create');

  create.addEventListener('click', function () {
    var link = document.getElementById('downloadlink');
    link.href = makeTextFile({{request_string}});
    link.style.display = 'block';
  }, false);
})();

我也试过这样做:

var text_string = {{request_string}}
link.href = makeTextFile(text_string);

{{request_string}}看起来像这样:

----------------Request File Generated 2015-06-30 17:23:16.324439------------------
     WINDOW_START    |      WINDOW_END     |       DURATION      |         SAT         |         TYPE        |       PRIORITY      |             
--------------------------------------------------------------------------------
 2015/01/02 00:00:00 | 2015/01/22 00:00:00 |         500         |          F7         |       NOMINAL       |          5          |  

html看起来像这样:

<div class="panel panel-body">
      <button id="create">Create file</button> 
      <a download="info.txt" id="downloadlink" style="display: none">Download</a>
</div>

{{request_string}}是str类型,所以我不确定问题是什么。谁能告诉我我做错了什么?

谢谢!

1 个答案:

答案 0 :(得分:0)

我最终使用document.getElementsByTagName('pre')而不是尝试传入包含字符串的变量。