自己封装的操作DOM方法 - codeing-or-artist-??

自己封装的操作DOM方法
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>
<body>
<div id="d1">
    <div id="d1_1"></div>
    <div id="d1_2"></div>
</div>
<div id="d2">你好
    <div id="d2_1">我是狗</div>
    <div id="d2_2"></div>
</div>


<table>
<tr>
<p>
<td id="haha">haha</td>
</p>
</tr>
</table>

<script type="text/javascript">
var mylibs = {
    first:function(elem){
        return elem && (elem.firstElementChild || elem.firstChild);
    },
    last:function(elem){
        return elem && (elem.lastElementChild || elem.lastChild);
    },
    prev:function(elem){
        return elem && (elem.previousElementSibling || elem.previousSibling);
    },
    next:function(elem){
        return elem && (elem.nextElementSibling || elem.nextSibling);
    },
    before:function(newElement,targetElement){
        return targetElement && targetElement.parentNode ? 
            targetElement.parentNode.insertBefore(newElement,targetElement) : 
            null;
    },
    after:function(newElement,targetElement){
        return targetElement && this.last(targetElement) == targetElement ? 
            // 如果最后的节点是目标元素，则直接添加。因为默认是最后 
            this.before(newElement,targetElement)
        :
            //如果不是，则插入在目标元素的下一个兄弟节点 的前面。也就是目标元素的后面
            this.before(newElement, this.next(targetElement));
    },
    replace:function(elem,newElement,oldElement){

    },
    remove:function(elem){
        return elem.parentNode.removeChild(elem);
    },
    empty:function(elem){
        elem.innerHTML = '';
        return elem;
    },
    append:function(elem,newElement){
        return elem.appendChild(newElement);
    },
    text:function(elem,value){
        return value === undefined ? 
            elem.textContent || elem.innerHTML.replace(/<[^<]+>/g,'')
        
        :
            this.append(this.empty(elem),(elem && elem.ownerDocument || document).createTextNode(value));
    },
    html:function(elem,value){
        if(value === undefined && elem.nodeType === 1) 
            return elem.innerHTML;
        
        
        if(typeof value === 'string' && /<(?:script|style|link)/i.test(value)){
            value = value.replace(/<(?!area|br|col|embed|hr|img|input|link|meta|param)(([\w:]+)[^>]*)\/>/gi,'<$1></$2>');
            elem.innerHTML = value;
        }

        if(elem){
            this.append(this.empty(elem),value);
        }
    }

    /*append() - 在被选元素的结尾插入内容
prepend() - 在被选元素的开头插入内容
after() - 在被选元素之后插入内容
before() - 在
remove() - 删除被选元素（及其子元素）
empty() - */

};

var dom1 = document.getElementById('d1'),
    dom2 = document.getElementById('d2');

var tmp = document.createElement('div');
console.log(mylibs.after(tmp,dom2));


</script>
</body>
</html>
posted on 2016-09-12 00:25 codeing-or-artist-?? 阅读(605) 评论(0) 编辑收藏举报