qq_给自己一个微笑_0
2016-10-04 10:08
<!DOCTYPE HTML> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>nextSibling</title> </head> <body> <ul id="u1"> <li id="a">javascript</li> <li id="b">jquery</li> <li id="c">html</li> </ul> <ul id="u2"> <li id="d">css3</li> <li id="e">php</li> <li id="f">java</li> </ul> <script type="text/javascript"> function get_nextSibling(n){ var x=n.nextSibling; while (x && x.nodeType!=1){ x=x.nextSibling; } return x; } var x=document.getElementsByTagName("li")[0]; document.write(x.nodeName); document.write(" = "); document.write(x.innerHTML); var y=get_nextSibling(x); if(y!=null){ document.write("<br />nextsibling: "); document.write(y.nodeName); document.write(" = "); document.write(y.innerHTML+"</br>"); }else{ document.write("<br>已经是最后一个节点"); } function get_previousSibling(n) { var i=n.previousSibling; while(i&i.nodeType!=1) { i=i.previousSibling; } return i; } var i=document.getElementsByTagName("li")[5]; document.write(i.nodeName); document.write("="); document.write(i.innerHTML); var g=get_previousSibling(i); if(g!=null) { document.write("</br>previousSibling:"+g.nodeName+"="+g.innerHTML); } else { document.write("</br>已经是第一个节点"); } </script> </body> </html>
function get_previousSibling(n)
{
var i=n.previousSibling;
while(i&i.nodeType!=1)
{
i=i.previousSibling;
}
return i;
}
这段代码第四行while()里面应为&&
JavaScript进阶篇
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