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hold-back

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hold-back

解决多个异步数据同一个容器渲染混乱的问题。该问题详见: https://hezedu.github.io/hold-back/

Install

npm install hold-back

API

引用

COMMONJS:

var HoldBack = require('hold-back');

./dist文件夹下文件支持AMD加载。直接src的话,会暴露一个全局变量:HoldBack

生成实例

var holdBack = new HoldBack();

holdBack.start(key)

异步流开始时使用.

key Number___或___String, 异步流的唯一标实.

 return Boolean
   true 表示当前异步流已存在.
   false 表示当前异步流是新创建的.

holdBack.end(key)

异步流结束时使用.跟holdBack.start(key)对应.

key Number___或___String, 异步流的唯一标实.

 return Boolean
   true 表示当前异步流是你期望的.
   false 表示当前异步流不是你期望的.

示例

var HoldBack = require('hold-back');
var holdBack = new HoldBack();

function asyncLog(key, ms){
  var isAlreadyStart = holdBack.start(key);
  if(isAlreadyStart){
    return; //阻止重复加载.
  }
  setTimeout(() => {
    var isExpect = holdBack.end(key);
    if(isExpect){
      console.log('key', key);
     }
    }, ms);
}
asyncLog('slow', 1000);
asyncLog('fast', 100);

// only log: fast

Keywords

async

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Package last updated on 08 Sep 2017

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