javascript - 尽管我一遍又一遍地使用相同的格式，但我得到输入字符串的格式不正确

Question

输入字符串的格式不正确。我不知道为什么，我以前用过这种格式，我想我遗漏了什么

 StringBuilder sb = new StringBuilder(); 

  for (int i = 0; i < 3; i++)
            {
                sb.Append(string.Format(@"
                <button onclick=""playPause{0}()"" type=""button"" >Play/Pause</button> 
                <br> 
                <video id=""video{0}"" width=""420"" controls>
                <source src=""videos/arturo.mp4"" type=""video/mp4"">
                <source src=""videos/arturo.ogg"" type=""video/ogg"">
                Your browser does not support HTML5 video.
                </video>
                <script type=""text/javascript"" > 

                function playPause{0}()
                { 
                var myvideo = document.getElementById('video{0}');
                if (myvideo.paused) 
                myvideo.play(); 
                else 
                myvideo.pause(); 
                } 

                </script> 
   ", i));
  }

            Literal1.Text = sb.ToString();

Answer 1

你需要双花括号

....
function playPause{0}()
{{ 
var myvideo = document.getElementById('video{0}');
if (myvideo.paused) 
myvideo.play(); 
else 
myvideo.pause(); 
}} 
....

否则字符串格式将它们解释为下一个参数的占位符，您没有在参数列表中提供(这就像您对双引号所做的那样)