用 onerror 获取错误信- HTML/XHTML教程

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HTML/XHTML教程中的用 onerror 获取错误信

出处:互联网 整理: 软晨网（RuanChen.com） 发布: 2009-11-04 浏览: 78 ::

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仿 Office 2003 的工具条 *.HTC 文件的简单介绍

这个东西是在线写 js 脚本的时候，用来即时查错的东西！

也就是，当发现所编写的脚本有问题的时候会有相应的提示，并且在源代码框中高亮标示出错行，方便除错！

运行代码框
<HTML><HEAD><TITLE>Debug Textarea</TITLE><meta http-equiv='Content-Type' content='text/html; charset=gb2312'></HEAD><style>* { font-size: 12px}body { margin: 10px; padding: 0px}table.list{ cursor: default; border:1px solid #cccccc background-color: #cccccc; border-collapse: collapse; border-Color: #cccccc;}</style><script language="javascript">// Coded by windy_sk <windy_sk@126.com> 20040205function reportError(msg,url,line) { var str = "You have found an error as below: \n\n"; str += "Err: " + msg + " on line: " + line; alert(str); return true;}window.onerror = reportError;document.onkeydown = function() { if(event.ctrlKey){ switch(event.keyCode) { case 82: //r runcode(); break; case 83: //s savecode(); break; case 71: //g goto(prompt('Please input the line number', '1')); break; case 65: //a document.execCommand("SelectAll"); break; case 67: //c document.execCommand("Copy"); break; case 88: //x document.execCommand("Cut"); break; case 86: //v document.execCommand("Paste"); break; case 90: //z document.execCommand("Undo"); break; case 89: //y document.execCommand("Redo"); break; default: break; } event.keyCode = 0; event.returnValue = false; } return;}function show_ln(){ var txt_ln = document.getElementById('txt_ln'); var txt_main = document.getElementById('txt_main'); txt_ln.scrollTop = txt_main.scrollTop; while(txt_ln.scrollTop != txt_main.scrollTop) { txt_ln.value += (i++) + '\n'; txt_ln.scrollTop = txt_main.scrollTop; } return;}function editTab(){ var code, sel, tmp, r; event.returnValue = false; sel =event.srcElement.document.selection.createRange(); r = event.srcElement.createTextRange(); switch (event.keyCode){ case (8) : if (!(sel.getClientRects().length > 1)){ event.returnValue = true; return; } code = sel.text; tmp = sel.duplicate(); tmp.moveToPoint(r.getBoundingClientRect().left, sel.getClientRects()[0].top); if(sel.parentElement() != tmp.parentElement()) return;; sel.setEndPoint('startToStart', tmp); sel.text = sel.text.replace(/^\t/gm, ''); code = code.replace(/^\t/gm, '').replace(/\r\n/g, '\r'); r.findText(code); r.select(); break; case (9) : if (sel.getClientRects().length > 1){ code = sel.text; tmp = sel.duplicate(); tmp.moveToPoint(r.getBoundingClientRect().left, sel.getClientRects()[0].top); if(sel.parentElement() != tmp.parentElement()) return; sel.setEndPoint('startToStart', tmp); sel.text = '\t'+sel.text.replace(/\r\n/g, '\r\t'); code = code.replace(/\r\n/g, '\r\t'); r.findText(code); r.select(); }else{ sel.text = '\t'; sel.select(); } break case (13) : tmp = sel.duplicate(); tmp.moveToPoint(r.getBoundingClientRect().left, sel.getClientRects()[0].top); if(sel.parentElement() != tmp.parentElement()) return; tmp.setEndPoint('endToEnd', sel); sel.text = '\r\n' + tmp.text.replace(tmp.text.replace(/^[\t ]+/g, ""),""); sel.select(); break; default : event.returnValue = true; break; } return;}function runcode() { var str = document.getElementById("txt_main").value; var code_win = window.open('about:blank'); code_win.document.open(); code_win.document.writeln("<script>"); code_win.document.writeln("function reportError(msg,url,line){\nline-=14;\nvar str='You have found an error as below: \\n\\n';\nstr+='Err: '+msg+' on line: '+(line);\nalert(str);\nopener.goto(line);\nopener.focus();\nwindow.onerror=null;\nsetTimeout('self.close()',10);\nreturn true;\n}"); code_win.document.writeln("window.onerror = reportError;"); code_win.document.writeln("<\/script>"); code_win.document.writeln(str); code_win.document.close(); return;}function savecode() { var str = document.getElementById("txt_main").value <div style="text-align:left; margin-top:0px; clear:both;"> </div> <div id="tpage"> <span style="float:left;width:45%" class="text-truncate"> <img align="absmiddle" src="https://static.ruanchen.com/img/pre_art.gif" /> <a href="/tech/view/doc/72270/p/28/" title="仿 Office 2003 的工具条">仿 Office 2003 的工具条</a></span> <span style="float:right;width:45%;text-align:right" class="text-truncate"> <a href="/tech/view/doc/72272/p/28/" title="*.HTC 文件的简单介绍">*.HTC 文件的简单介绍</a> <img align="absmiddle" src="https://static.ruanchen.com/img/next_art.gif"/></span> </div> </div> <div style="clear:both;"> <script language="javascript"> var infoid = '72271'; var classid = 'tech'; </script> <script language="JavaScript" src="https://static.ruanchen.com/js/mood.js"></script> </div> <div id="cmt"> <h3> <img src="https://static.ruanchen.com/img/cmt.gif" align="absmiddle" /> 评论 (0) <small class="pagenav-listbar"> <a style="padding:5px;" href="javascript:tech_cmt('72271')">All</a> </small> </h3> <div id="cmt-list"></div> <form method="post" action="#cmt" onsubmit="alert('您还没有登陆，登陆后才能进行此操作。');return false;"> <textarea id="content" name="content" style="width:100%; height:100px;">

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HTML/XHTML教程 中的 用 onerror 获取错误信

HTML/XHTML教程中的用 onerror 获取错误信