put button onclick 调用js中的方法

[wanghaisheng]

比如这个
function do_dl() {
download_files(%s);
};
</script>

Save all video files in one click.

            put_button("one in all download", onclick="do_dl();", color='success', outline=True)

[wang0618]

只需要在 onclick 回调函数中调用 run_js() 即可

[wanghaisheng]

经测试
put_button("one in all download", onclick=session.run_js("do_dl();"), color='primary')

这样子的话 我没点这个button 他就会自己下载。。。我好郁闷 理想应该是点了再下载 而且do_dl还被自动执行了三次 我每个视频都有3副本。。

[wanghaisheng]

我都给你就好了

quick3 = """
<script>
function makeid(length) {
    var result           = '';
    var characters       = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
    var charactersLength = characters.length;
    for ( var i = 0; i < length; i++ ) {
      result += characters.charAt(Math.floor(Math.random() * 
 charactersLength));
   }
   return result;
}
function download_files(files) {
  function download_next(i) {
    if (i >= files.length) {
      return;
    }
    var a = document.createElement('a');
    a.href = files[i]["url"];
    a.target = '_parent';
    //a.target = '_blank';

    // Use a.download if available, it prevents plugins from opening.
    if ('download' in a) {

    strValue=files[i]["name"]
      // Test whether strValue is empty
    if (!strValue || strValue.trim() === "" || (strValue.trim()).length === 0) {
        a.download = makeid(10)
    }        
      a.download = files[i]['name'];
    }
    // Add a to the doc for click to work.
    (document.body || document.documentElement).appendChild(a);
    if (a.click) {
      a.click(); // The click method is supported by most browsers.
    } else {
      $(a).click(); // Backup using jquery
    }
    // Delete the temporary link.
    a.parentNode.removeChild(a);
    // Download the next file with a small timeout. The timeout is necessary
    // for IE, which will otherwise only download the first file.
    setTimeout(function() {
      download_next(i + 1);
    }, 500);
  }
  // Initiate the first download.
  download_next(0);
}


  // Here's a live example that downloads three test text files:
  function do_dl() {
    download_files(%s);
  };
</script>

<button onclick="do_dl();">Save all video files in one click.</button>

"""

我现在想取代js里面定义的button