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js兩種方式定位div

<html>
<title>js定位div的兩種方式</title>
<head>
<meta charset="utf-8">
<script>
    window.onload = function () {
        var d = document.getElementById("test"); 
        var nodeList = d.getElementsByTagName("span"); 
        var sing = nodeList[0].innerHTML.replace(/^\s*|\s*$/g
, ""); if ( sing != null && sing != "") { document.body.scrollTop = document.body.scrollHeight; } } //function dingWeiDiv(){ // window.location.hash = "#test"; //}
</script> </head> <body> <div> <p>1</p>
<p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p> <p>1</p><p>1</p><p>1</p><p>1</p><p>
1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p><p>1</p> </div> <div id = "test" > <span>定位到這裡</span> </div> </body> </html>