输入延迟触发实现-input_delay

input_delay.js

//创建一个Textarea并监听键盘onkeyup
var iframe = document.createElement('iframe');
var re = frame.document.createElement('textarea');
    re.id = 'remarkText';
    re.style.position='fixed';
    re.style.right='0';
    re.style.width='99.7%';
    re.style.backgroundColor='ghostwhite';
    re.style.bottom='22px';
    re.style.opacity='.5';
    re.style.maxHeight='10%';
    re.style.height='10%';
    re.style.zIndex = '10';
    re.style.visibility='hidden';
    re.style.resize = 'none';
    re.onkeyup = function() {
      var value = frame.document.getElementById('remarkText').value;
      CurrentRemarkText = value;
        delay(function(){
          saveRemark(value);
        }, 1000 );
    }
    frame.document.getElementById('ChromelessStatusBar.RightDock').appendChild(re);
    initEnvironment();
}

//delay最佳解决方案
var delay = (function(){
    var timer = 0;
    return function(callback, ms){
    clearTimeout (timer);
    timer = setTimeout(callback, ms);
  };
})();