javascript Js实现了延迟链式调用

Posted 2021-05-04

function make(str) {
  if (!(this instanceof make)) {
    return new make(str);
  }
  console.log(str);
  return this;
}

make.prototype.sleep = function(time) {
  this.delay = time || 0;
  return this;
}

make.prototype.say = function(str) {
  if (this.delay) {
    new Promise((resolve) => {
      setTimeout(_ => {
        resolve();
      }, this.delay * 1000);
    }).then(_ => {
      console.log(str);
    });
  } else {
    console.log(str);
  }
}

make('joe').sleep(5).say(' hello');