JavaScript常用工具方法封装（7）-----------

$ (selector){ 
  var type = selector.substring(0, 1);
  if (type === '#') {
    if (document.querySelecotor) return document.querySelector(selector)
      return document.getElementById(selector.substring(1))
  }else if (type === '.') {
    if (document.querySelecotorAll) return document.querySelectorAll(selector)
      return document.getElementsByClassName(selector.substring(1))
  }else{
    return document['querySelectorAll' ? 'querySelectorAll':'getElementsByTagName'](selector)
  }
} 
/*检测类名*/
hasClass (ele, name) {
  return ele.className.match(new RegExp('(\\s|^)' + name + '(\\s|$)'));
}
/*添加类名*/
addClass (ele, name) {
  if (!this.hasClass(ele, name)) ele.className += " " + name;
}
/*删除类名*/
removeClass (ele, name) {
  if (this.hasClass(ele, name)) {
    var reg = new RegExp('(\\s|^)' + name + '(\\s|$)');
    ele.className = ele.className.replace(reg, '');
  }
}
/*替换类名*/
replaceClass (ele, newName, oldName) {
  this.removeClass(ele, oldName);
  this.addClass(ele, newName);
}
/*获取兄弟节点*/
siblings (ele) {
  console.log(ele.parentNode)
  var chid = ele.parentNode.children,eleMatch = []; 
  for(var i = 0, len = chid.length; i < len; i ++){ 
    if(chid[i] != ele){ 
      eleMatch.push(chid[i]); 
    } 
  } 
  return eleMatch;
}
/*获取行间样式属性*/
getByStyle (obj,name){
  if(obj.currentStyle){
    return obj.currentStyle[name];
  }else{
    return getComputedStyle(obj,false)[name];
  }
}