school/qiniu-js/test/demo1/scripts/uploadWithSDK.js

function uploadWithSDK(token, putExtra, config, domain) {
  // 切换tab后进行一些css操作
  controlTabDisplay("sdk");
  $("#select2").unbind("change").bind("change",function(){
    var file = this.files[0];
    // eslint-disable-next-line
    var finishedAttr = [];
    // eslint-disable-next-line
    var compareChunks = [];
    var observable;
    if (file) {
      var key = file.name;
      // 添加上传dom面板
      var board = addUploadBoard(file, config, key, "");
      if (!board) {
        return;
      }
      putExtra.customVars["x:name"] = key.split(".")[0];
      board.start = true;
      var dom_total = $(board)
        .find("#totalBar")
        .children("#totalBarColor");

      // 设置next,error,complete对应的操作，分别处理相应的进度信息，错误信息，以及完成后的操作
      var error = function(err) {
        board.start = true;
        $(board).find(".control-upload").text("继续上传");
        console.log(err);
        alert("上传出错")
      };

      var complete = function(res) {
        $(board)
          .find("#totalBar")
          .addClass("hide");
        $(board)
          .find(".control-container")
          .html(
            "<p><strong>Hash：</strong>" +
              res.hash +
              "</p>" +
              "<p><strong>Bucket：</strong>" +
              res.bucket +
              "</p>"
          );
        if (res.key && res.key.match(/\.(jpg|jpeg|png|gif)$/)) {
          imageDeal(board, res.key, domain);
        }
      };

      var next = function(response) {
        var chunks = response.chunks||[];
        var total = response.total;
        // 这里对每个chunk更新进度，并记录已经更新好的避免重复更新，同时对未开始更新的跳过
        for (var i = 0; i < chunks.length; i++) {
          if (chunks[i].percent === 0 || finishedAttr[i]){
            continue;
          }
          if (compareChunks[i].percent === chunks[i].percent){
            continue;
          }
          if (chunks[i].percent === 100){
            finishedAttr[i] = true;
          }
          $(board)
            .find(".fragment-group li")
            .eq(i)
            .find("#childBarColor")
            .css(
              "width",
              chunks[i].percent + "%"
            );
        }
        $(board)
          .find(".speed")
          .text("进度：" + total.percent + "% ");
        dom_total.css(
          "width",
          total.percent + "%"
        );
        compareChunks = chunks;
      };

      var subObject = {
        next: next,
        error: error,
        complete: complete
      };
      var subscription;
      // 调用sdk上传接口获得相应的observable，控制上传和暂停
      observable = qiniu.upload(file, key, token, putExtra, config);

      $(board)
        .find(".control-upload")
        .on("click", function() {
          if(board.start){
            $(this).text("暂停上传");
            board.start = false;
            subscription = observable.subscribe(subObject);
          }else{
            board.start = true;
            $(this).text("继续上传");
            subscription.unsubscribe();
          }
        });
    }
  })
}