jquery - 如何将新的键值对添加到现有对象中

Question

我有一个简单的功能:

function pagination(opt, limit){
    console.log(opt);
    //logs out this-> [Object { limit="2",  layout="getConversations"}]

    if (typeof opt === 'object') {
        var list = {
            data: [opt]
        }
        list.data['limitstart'] = 24; //undefined
        console.debug(data); //here it should list three key value pairs including limitstart which just added
    }
}

我尝试过这个:

list.data.push({ 'limitstart': 24 }); //creates another object.

预期输出:

[Object { limit="2",  layout="getConversations", limitstart=24}]

Answer 1

要根据需要获取输出，不需要将 opt 放入数组中，只需向其添加一个属性，如下所示:

function pagination(opt, limit) {
  console.log('input', opt);

  if (typeof opt === 'object') {
    opt.limitstart = 24; // add the property here
  }

  console.log('output', opt);
}

pagination({
  limit: '2',
  layout: 'getConversations'
});