{"id":60,"date":"2013-01-29T11:44:20","date_gmt":"2013-01-29T03:44:20","guid":{"rendered":"http:\/\/weitaoc.com\/?p=60"},"modified":"2013-01-29T17:42:15","modified_gmt":"2013-01-29T09:42:15","slug":"js%e4%b8%adoffsettop%e3%80%81clienttop%e3%80%81scrolltop%e3%80%81offsettop%e5%90%84%e5%b1%9e%e6%80%a7%e4%bb%8b%e7%bb%8d%ef%bc%88mark%ef%bc%89","status":"publish","type":"post","link":"http:\/\/weitaoc.com\/?p=60","title":{"rendered":"JS\u4e2doffsetTop\u3001clientTop\u3001scrollTop\u3001offsetTop\u5404\u5c5e\u6027\u4ecb\u7ecd\uff08mark\uff09"},"content":{"rendered":"

\u8fd9\u91cc\u662fjavascript\u4e2d\u5236\u4f5c\u6eda\u52a8\u4ee3\u7801\u7684\u5e38\u7528\u5c5e\u6027
\n\u9875\u53ef\u89c1\u533a\u57df\u5bbd\uff1a document.body.clientWidth;
\n\u7f51\u9875\u53ef\u89c1\u533a\u57df\u9ad8\uff1a document.body.clientHeight;
\n\u7f51\u9875\u53ef\u89c1\u533a\u57df\u5bbd\uff1a document.body.offsetWidth (\u5305\u62ec\u8fb9\u7ebf\u7684\u5bbd);
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\n\u7f51\u9875\u6b63\u6587\u5168\u6587\u5bbd\uff1a document.body.scrollWidth;
\n\u7f51\u9875\u6b63\u6587\u5168\u6587\u9ad8\uff1a document.body.scrollHeight;
\n\u7f51\u9875\u88ab\u5377\u53bb\u7684\u9ad8\uff1a document.body.scrollTop;
\n\u7f51\u9875\u88ab\u5377\u53bb\u7684\u5de6\uff1a document.body.scrollLeft;
\n\u7f51\u9875\u6b63\u6587\u90e8\u5206\u4e0a\uff1a window.screenTop;
\n\u7f51\u9875\u6b63\u6587\u90e8\u5206\u5de6\uff1a window.screenLeft;
\n\u5c4f\u5e55\u5206\u8fa8\u7387\u7684\u9ad8\uff1a window.screen.height;
\n\u5c4f\u5e55\u5206\u8fa8\u7387\u7684\u5bbd\uff1a window.screen.width;
\n\u5c4f\u5e55\u53ef\u7528\u5de5\u4f5c\u533a\u9ad8\u5ea6\uff1a window.screen.availHeight;<\/p>\n

\"7\"<\/a><\/p>\n

 <\/p>\n

1\u3001offsetLeft
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\n\u4f8b\u5982\uff1a
\n<div id=”tool”>
\n<input type=”button” value=”\u63d0\u4ea4”>
\n<input type=”button” value=”\u91cd\u7f6e”>
\n<\/div>
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\n\u201c\u91cd\u7f6e\u201d\u6309\u94ae\u7684 offsetLeft \u6307\u201c\u91cd\u7f6e\u201d\u6309\u94ae\u8ddd\u201c\u63d0\u4ea4\u201d\u6309\u94ae\u53f3\u8fb9\u6846\u7684\u8ddd\u79bb\uff0c\u56e0\u4e3a\u8ddd\u5176\u5de6\u8fb9\u6700\u8fd1\u7684\u662f\u201c\u63d0\u4ea4\u201d\u6309\u94ae\u7684\u53f3\u8fb9\u6846\u3002
\n\u4ee5\u4e0a\u5c5e\u6027\u5728 FireFox \u4e2d\u4e5f\u6709\u6548\u3002
\n\u53e6 \u5916\uff1a\u6211\u4eec\u8fd9\u91cc\u6240\u8bf4\u7684\u662f\u6307 HTML \u63a7\u4ef6\u7684\u5c5e\u6027\u503c\uff0c\u5e76\u4e0d\u662f document.body\uff0cdocument.body \u7684\u503c\u5728\u4e0d\u540c\u6d4f\u89c8\u5668\u4e2d\u6709\u4e0d\u540c\u89e3\u91ca\uff08\u5b9e\u9645\u4e0a\u5927\u591a\u6570\u73af\u5883\u662f\u7531\u4e8e\u5bf9 document.body \u89e3\u91ca\u4e0d\u540c\u9020\u6210\u7684\uff0c\u5e76\u4e0d\u662f\u7531\u4e8e\u5bf9 offset \u89e3\u91ca\u4e0d\u540c\u9020\u6210\u7684\uff09\uff0c\u70b9\u51fb\u8fd9\u91cc\u67e5\u770b\u4e0d\u540c\u70b9\u3002
\n\u6807\u9898\uff1aoffsetTop \u4e0e style.top \u7684\u533a\u522b
\n\u9884\u5907\u77e5\u8bc6\uff1aoffsetTop\u3001offsetLeft\u3001offsetWidth\u3001offsetHeight
\n\u6211\u4eec\u77e5\u9053 offsetTop \u53ef\u4ee5\u83b7\u5f97 HTML \u5143\u7d20\u8ddd\u79bb\u4e0a\u65b9\u6216\u5916\u5c42\u5143\u7d20\u7684\u4f4d\u7f6e\uff0cstyle.top \u4e5f\u662f\u53ef\u4ee5\u7684\uff0c\u4e8c\u8005\u7684\u533a\u522b\u662f\uff1a
\n\u4e00\u3001offsetTop \u8fd4\u56de\u7684\u662f\u6570\u5b57\uff0c\u800c style.top \u8fd4\u56de\u7684\u662f\u5b57\u7b26\u4e32\uff0c\u9664\u4e86\u6570\u5b57\u5916\u8fd8\u5e26\u6709\u5355\u4f4d\uff1apx\u3002
\n\u4e8c\u3001offsetTop \u53ea\u8bfb\uff0c\u800c style.top \u53ef\u8bfb\u5199\u3002
\n\u4e09\u3001\u5982\u679c\u6ca1\u6709\u7ed9 HTML \u5143\u7d20\u6307\u5b9a\u8fc7 top \u6837\u5f0f\uff0c\u5219 style.top \u8fd4\u56de\u7684\u662f\u7a7a\u5b57\u7b26\u4e32\u3002
\noffsetLeft \u4e0e style.left\u3001offsetWidth \u4e0e style.width\u3001offsetHeight \u4e0e style.height \u4e5f\u662f\u540c\u6837\u9053\u7406\u3002
\n\u6807\u9898\uff1aclientHeight\u3001offsetHeight\u548cscrollHeight
\n\u6211\u4eec\u8fd9\u91cc\u8bf4\u8bf4\u56db\u79cd\u6d4f\u89c8\u5668\u5bf9 document.body \u7684 clientHeight\u3001offsetHeight \u548c scrollHeight \u7684\u89e3\u91ca\uff0c\u8fd9\u91cc\u8bf4\u7684\u662f document.body\uff0c\u5982\u679c\u662f HTML \u63a7\u4ef6\uff0c\u5219\u53c8\u6709\u4e0d\u540c\uff0c\u70b9\u51fb\u8fd9\u91cc\u67e5\u770b\u3002
\n\u8fd9\u56db\u79cd\u6d4f\u89c8\u5668\u5206\u522b\u4e3aIE\uff08Internet Explorer\uff09\u3001NS\uff08Netscape\uff09\u3001Opera\u3001FF\uff08FireFox\uff09\u3002
\n2\u3001clientHeight
\nclientHeight
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\noffsetHeight
\nIE\u3001Opera \u8ba4\u4e3a offsetHeight = clientHeight + \u6eda\u52a8\u6761 + \u8fb9\u6846\u3002
\nNS\u3001FF \u8ba4\u4e3a offsetHeight \u662f\u7f51\u9875\u5185\u5bb9\u5b9e\u9645\u9ad8\u5ea6\uff0c\u53ef\u4ee5\u5c0f\u4e8e clientHeight\u3002
\nscrollHeight
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\nNS\u3001FF \u8ba4\u4e3a scrollHeight \u662f\u7f51\u9875\u5185\u5bb9\u9ad8\u5ea6\uff0c\u4e0d\u8fc7\u6700\u5c0f\u503c\u662f clientHeight\u3002
\n\u7b80\u5355\u5730\u8bf4
\nclientHeight \u5c31\u662f\u900f\u8fc7\u6d4f\u89c8\u5668\u770b\u5185\u5bb9\u7684\u8fd9\u4e2a\u533a\u57df\u9ad8\u5ea6\u3002
\nNS\u3001 FF \u8ba4\u4e3a offsetHeight \u548c scrollHeight \u90fd\u662f\u7f51\u9875\u5185\u5bb9\u9ad8\u5ea6\uff0c\u53ea\u4e0d\u8fc7\u5f53\u7f51\u9875\u5185\u5bb9\u9ad8\u5ea6\u5c0f\u4e8e\u7b49\u4e8e clientHeight \u65f6\uff0cscrollHeight \u7684\u503c\u662f clientHeight\uff0c\u800c offsetHeight \u53ef\u4ee5\u5c0f\u4e8e clientHeight\u3002
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\n\u540c\u7406
\nclientWidth\u3001offsetWidth \u548c scrollWidth \u7684\u89e3\u91ca\u4e0e\u4e0a\u9762\u76f8\u540c\uff0c\u53ea\u662f\u628a\u9ad8\u5ea6\u6362\u6210\u5bbd\u5ea6\u5373\u53ef\u3002
\n\u4f46\u662f
\nFF \u5728\u4e0d\u540c\u7684 DOCTYPE \u4e2d\u5bf9 clientHeight \u7684\u89e3\u91ca\u4e0d\u540c\uff0c xhtml 1 trasitional \u4e2d\u5219\u4e0d\u662f\u5982\u4e0a\u89e3\u91ca\u7684\u3002\u5176\u5b83\u6d4f\u89c8\u5668\u5219\u4e0d\u5b58\u5728\u6b64\u95ee\u9898\u3002
\n\u6807\u9898\uff1ascrollTop\u3001scrollLeft\u3001scrollWidth\u3001scrollHeight
\n3\u3001scrollLeft
\nscrollTop \u662f\u201c\u5377\u201d\u8d77\u6765\u7684\u9ad8\u5ea6\u503c\uff0c\u793a\u4f8b\uff1a<\/p>\n

1
2
3
4
5
6
7
<\/div><\/td>
<div style="width:100px;height:100px;background-color:#FF0000;overflow:hidden;" id="p">;
\n<div style="width:50px;height:300px;background-color:#0000FF;" id="t">\u5982\u679c\u4e3a p \u8bbe\u7f6e\u4e86 scrollTop\uff0c\u8fd9\u4e9b\u5185\u5bb9\u53ef\u80fd\u4e0d\u4f1a\u5b8c\u5168\u663e\u793a\u3002<\/div>
\n<\/div>
\n<<\/span>script type=<\/span>"text\/javascript"<\/span>><\/span>
\nvar<\/span> p =<\/span> document.getElementById<\/span>(<\/span>"p"<\/span>)<\/span>;<\/span>
\np.scrollTop<\/span> =<\/span> 10<\/span>;<\/span>
\n<\/<\/span>script><\/span><\/div><\/td><\/tr><\/tbody><\/table><\/div>\n

\u7531\u4e8e\u4e3a\u5916\u5c42\u5143\u7d20 p \u8bbe\u7f6e\u4e86 scrollTop\uff0c\u6240\u4ee5\u5185\u5c42\u5143\u7d20\u4f1a\u5411\u4e0a\u5377\u3002
\nscrollLeft \u4e5f\u662f\u7c7b\u4f3c\u9053\u7406\u3002
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\n\u800c scrollHeight \u662f\u5185\u90e8\u5143\u7d20\u7684\u7edd\u5bf9\u5bbd\u5ea6\uff0c\u5305\u542b\u5185\u90e8\u5143\u7d20\u7684\u9690\u85cf\u7684\u90e8\u5206\u3002
\n\u4e0a\u8ff0\u4e2d p \u7684 scrollHeight \u4e3a 300\uff0c\u800c p \u7684 offsetHeight \u4e3a 100\u3002
\nscrollWidth \u4e5f\u662f\u7c7b\u4f3c\u9053\u7406\u3002
\nIE \u548c FireFox \u5168\u9762\u652f\u6301\uff0c\u800c Netscape \u548c Opera \u4e0d\u652f\u6301 scrollTop\u3001scrollLeft\uff08document.body \u9664\u5916\uff09\u3002
\n\u53d1\u8868\u65f6\u95f4\uff1a2007-10-15 20:20:16
\n\u6807\u9898\uff1aoffsetTop\u3001offsetLeft\u3001offsetWidth\u3001offsetHeight
\n4\u3001clientLeft
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\n\u4e00\u76f4\u4ee5\u6765\u5bf9offsetLeft\uff0coffsetTop\uff0cscrollLeft\uff0cscrollTop\u8fd9\u51e0\u4e2a\u65b9\u6cd5\u5f88\u8ff7\u7cca\uff0c\u82b1\u4e86\u4e00\u5929\u7684\u65f6\u95f4\u597d\u597d\u7684\u5b66\u4e60\u4e86\u4e00\u4e0b\uff0e\u5f97\u51fa\u4e86\u4ee5\u4e0b\u7684\u7ed3\u679c\uff1a
\n1.offsetTop :
\n\u5f53\u524d\u5bf9\u8c61\u5230\u5176\u4e0a\u7ea7\u5c42\u9876\u90e8\u7684\u8ddd\u79bb.
\n\u4e0d\u80fd\u5bf9\u5176\u8fdb\u884c\u8d4b\u503c.\u8bbe\u7f6e\u5bf9\u8c61\u5230\u9875\u9762\u9876\u90e8\u7684\u8ddd\u79bb\u8bf7\u7528style.top\u5c5e\u6027.
\n2.offsetLeft :
\n\u5f53\u524d\u5bf9\u8c61\u5230\u5176\u4e0a\u7ea7\u5c42\u5de6\u8fb9\u7684\u8ddd\u79bb.
\n\u4e0d\u80fd\u5bf9\u5176\u8fdb\u884c\u8d4b\u503c.\u8bbe\u7f6e\u5bf9\u8c61\u5230\u9875\u9762\u5de6\u90e8\u7684\u8ddd\u79bb\u8bf7\u7528style.left\u5c5e\u6027.
\n3.offsetWidth :
\n\u5f53\u524d\u5bf9\u8c61\u7684\u5bbd\u5ea6.
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\n4.offsetHeight :
\n\u4e0estyle.height\u5c5e\u6027\u7684\u533a\u522b\u5728\u4e8e:\u5982\u5bf9\u8c61\u7684\u5bbd\u5ea6\u8bbe\u5b9a\u503c\u4e3a\u767e\u5206\u6bd4\u9ad8\u5ea6,\u5219\u65e0\u8bba\u9875\u9762\u53d8\u5927\u8fd8\u662f\u53d8\u5c0f,style.height\u90fd\u8fd4\u56de\u6b64\u767e\u5206\u6bd4,\u800coffsetHeight\u5219\u8fd4\u56de\u5728\u4e0d\u540c\u9875\u9762\u4e2d\u5bf9\u8c61\u7684\u9ad8\u5ea6\u503c\u800c\u4e0d\u662f\u767e\u5206\u6bd4\u503c
\n5.offsetParent :
\n\u5f53\u524d\u5bf9\u8c61\u7684\u4e0a\u7ea7\u5c42\u5bf9\u8c61.
\n\u6ce8\u610f.\u5982\u679c\u5bf9\u8c61\u662f\u5305\u62ec\u5728\u4e00\u4e2aDIV\u4e2d\u65f6,\u6b64DIV\u4e0d\u4f1a\u88ab\u5f53\u505a\u662f\u6b64\u5bf9\u8c61\u7684\u4e0a\u7ea7\u5c42,(\u5373\u5bf9\u8c61\u7684\u4e0a\u7ea7\u5c42\u4f1a\u8df3\u8fc7DIV\u5bf9\u8c61)\u4e0a\u7ea7\u5c42\u662fTable\u65f6\u5219\u4e0d\u4f1a\u6709\u95ee\u9898.
\n\u5229\u7528\u8fd9\u4e2a\u5c5e\u6027\uff0c\u53ef\u4ee5\u5f97\u5230\u5f53\u524d\u5bf9\u8c61\u5728\u4e0d\u540c\u5927\u5c0f\u7684\u9875\u9762\u4e2d\u7684\u7edd\u5bf9\u4f4d\u7f6e\uff0e
\n\u5f97\u5230\u7edd\u5bf9\u4f4d\u7f6e\u811a\u672c\u4ee3\u7801<\/p>\n

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<\/div><\/td>
function<\/span> GetPosition(<\/span>obj)<\/span>
\n{<\/span>
\nvar<\/span> left =<\/span> 0<\/span>;<\/span>
\nvar<\/span> top =<\/span> 0<\/span>;<\/span>
\n
\nwhile(<\/span>obj !=<\/span> document.body<\/span>)<\/span>
\n{<\/span>
\nleft =<\/span> obj.offsetLeft<\/span>;<\/span>
\ntop =<\/span> obj.offsetTop<\/span>;<\/span>
\n
\nobj =<\/span> obj.offsetParent<\/span>;<\/span>
\n}<\/span>
\n
\nalert(<\/span>"Left Is : "<\/span> +<\/span> left +<\/span> "\\r<\/span>\\n<\/span>"<\/span> +<\/span> "Top Is : "<\/span> +<\/span> top)<\/span>;<\/span>
\n}<\/span><\/div><\/td><\/tr><\/tbody><\/table><\/div>\n

6.scrollLeft :
\n\u5bf9\u8c61\u7684\u6700\u5de6\u8fb9\u5230\u5bf9\u8c61\u5728\u5f53\u524d\u7a97\u53e3\u663e\u793a\u7684\u8303\u56f4\u5185\u7684\u5de6\u8fb9\u7684\u8ddd\u79bb\uff0e
\n\u5373\u662f\u5728\u51fa\u73b0\u4e86\u6a2a\u5411\u6eda\u52a8\u6761\u7684\u60c5\u51b5\u4e0b\uff0c\u6eda\u52a8\u6761\u62c9\u52a8\u7684\u8ddd\u79bb\uff0e
\n7.scrollTop
\n\u5bf9\u8c61\u7684\u6700\u9876\u90e8\u5230\u5bf9\u8c61\u5728\u5f53\u524d\u7a97\u53e3\u663e\u793a\u7684\u8303\u56f4\u5185\u7684\u9876\u8fb9\u7684\u8ddd\u79bb\uff0e
\n\u5373\u662f\u5728\u51fa\u73b0\u4e86\u7eb5\u5411\u6eda\u52a8\u6761\u7684\u60c5\u51b5\u4e0b\uff0c\u6eda\u52a8\u6761\u62c9\u52a8\u7684\u8ddd\u79bb\uff0e
\n\u6211\u4eec\u8fd9\u91cc\u8bf4\u8bf4\u56db\u79cd\u6d4f\u89c8\u5668\u5bf9 document.body \u7684 clientHeight\u3001offsetHeight \u548c scrollHeight \u7684\u89e3\u91ca\uff0c\u8fd9\u91cc\u8bf4\u7684\u662f document.body\uff0c\u5982\u679c\u662f HTML \u63a7\u4ef6\uff0c\u5219\u53c8\u6709\u4e0d\u540c\uff0c\u70b9\u51fb\u8fd9\u91cc\u67e5\u770b\u3002
\n\u8fd9\u56db\u79cd\u6d4f\u89c8\u5668\u5206\u522b\u4e3aIE\uff08Internet Explorer\uff09\u3001NS\uff08Netscape\uff09\u3001Opera\u3001FF\uff08FireFox\uff09\u3002
\nclientHeight
\n\u5927\u5bb6\u5bf9 clientHeight \u90fd\u6ca1\u6709\u4ec0\u4e48\u5f02\u8bae\uff0c\u90fd\u8ba4\u4e3a\u662f\u5185\u5bb9\u53ef\u89c6\u533a\u57df\u7684\u9ad8\u5ea6\uff0c\u4e5f\u5c31\u662f\u8bf4\u9875\u9762\u6d4f\u89c8\u5668\u4e2d\u53ef\u4ee5\u770b\u5230\u5185\u5bb9\u7684\u8fd9\u4e2a\u533a\u57df\u7684\u9ad8\u5ea6\uff0c\u4e00\u822c\u662f\u6700\u540e\u4e00\u4e2a\u5de5\u5177\u6761\u4ee5\u4e0b\u5230\u72b6\u6001\u680f\u4ee5\u4e0a\u7684\u8fd9\u4e2a\u533a\u57df\uff0c\u4e0e\u9875\u9762\u5185\u5bb9\u65e0\u5173\u3002
\noffsetHeight
\nIE\u3001Opera \u8ba4\u4e3a offsetHeight = clientHeight + \u6eda\u52a8\u6761 + \u8fb9\u6846\u3002
\nNS\u3001FF \u8ba4\u4e3a offsetHeight \u662f\u7f51\u9875\u5185\u5bb9\u5b9e\u9645\u9ad8\u5ea6\uff0c\u53ef\u4ee5\u5c0f\u4e8e clientHeight\u3002
\nscrollHeight
\nIE\u3001Opera \u8ba4\u4e3a scrollHeight \u662f\u7f51\u9875\u5185\u5bb9\u5b9e\u9645\u9ad8\u5ea6\uff0c\u53ef\u4ee5\u5c0f\u4e8e clientHeight\u3002
\nNS\u3001FF \u8ba4\u4e3a scrollHeight \u662f\u7f51\u9875\u5185\u5bb9\u9ad8\u5ea6\uff0c\u4e0d\u8fc7\u6700\u5c0f\u503c\u662f clientHeight\u3002
\n\u7b80\u5355\u5730\u8bf4
\nclientHeight \u5c31\u662f\u900f\u8fc7\u6d4f\u89c8\u5668\u770b\u5185\u5bb9\u7684\u8fd9\u4e2a\u533a\u57df\u9ad8\u5ea6\u3002
\nNS\u3001 FF \u8ba4\u4e3a offsetHeight \u548c scrollHeight \u90fd\u662f\u7f51\u9875\u5185\u5bb9\u9ad8\u5ea6\uff0c\u53ea\u4e0d\u8fc7\u5f53\u7f51\u9875\u5185\u5bb9\u9ad8\u5ea6\u5c0f\u4e8e\u7b49\u4e8e clientHeight \u65f6\uff0cscrollHeight \u7684\u503c\u662f clientHeight\uff0c\u800c offsetHeight \u53ef\u4ee5\u5c0f\u4e8e clientHeight\u3002
\nIE\u3001Opera \u8ba4\u4e3a offsetHeight \u662f\u53ef\u89c6\u533a\u57df clientHeight \u6eda\u52a8\u6761\u52a0\u8fb9\u6846\u3002scrollHeight \u5219\u662f\u7f51\u9875\u5185\u5bb9\u5b9e\u9645\u9ad8\u5ea6\u3002
\n\u540c\u7406
\nclientWidth\u3001offsetWidth \u548c scrollWidth \u7684\u89e3\u91ca\u4e0e\u4e0a\u9762\u76f8\u540c\uff0c\u53ea\u662f\u628a\u9ad8\u5ea6\u6362\u6210\u5bbd\u5ea6\u5373\u53ef\u3002<\/p>\n

\u8f6c\u8f7d\u8bf7\u6ce8\u660e\uff1a\u8ff7\u8def\u7684\u8001\u9f20<\/a> » JS\u4e2doffsetTop\u3001clientTop\u3001scrollTop\u3001offsetTop\u5404\u5c5e\u6027\u4ecb\u7ecd\uff08mark\uff09<\/a><\/p>","protected":false},"excerpt":{"rendered":"

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