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onerror:用 onerror 获取错误信息

来源: 发布时间:星期四, 2009年2月12日浏览:140次评论:0

这个东西是在线写 js 脚本

时候

用来即时查错

东西！

也就是

当发现所编写

脚本有问题

时候会有相应

提示

并且在源代码框中高亮标示出错行

方便除错

<HTML>
<HEAD>
<TITLE>Debug Textarea</TITLE>
<meta http-equiv=\'Content-Type\' content=\'text/html; char

=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 <[email protected]> 20040205

function reportError(msg,url,line) {
var str = \"You have found an error as below: \\n\\n\";
str

\"Err: \" + msg + \" _disibledevent=>
document.onkeydown = function

{

(event.ctrlKey){
switch(event.keyCode) {

82: //r
runcode

;

83: //s
savecode

;

71: //g
goto(prompt(\'Please input the line number\', \'1\'));

;

65: //a
document.execCommand(\"SelectAll\");

;

67: //c
document.execCommand(\"Copy\");

;

88: //x
document.execCommand(\"Cut\");

;

86: //v
document.execCommand(\"Paste\");

;

90: //z
document.execCommand(\"Undo\");

;

89: //y
document.execCommand(\"Redo\");

;
default:

;
}
event.keyCode = 0;
event.

Value = false;
}

;
}

function show_ln

{
var txt_ln = document.getElementById(\'txt_ln\');
var txt_

= document.getElementById(\'txt_

\');
txt_ln.scrollTop = txt_

.scrollTop;
while(txt_ln.scrollTop != txt_

.scrollTop) {
txt_ln.value

) + \'\\n\';
txt_ln.scrollTop = txt_

.scrollTop;
}

;
}

function editTab

{
var code, sel, tmp, r;
event.

Value = false;
sel =event.srcElement.document.selection.createRange

;
r = event.srcElement.createTextRange

;

switch (event.keyCode){

(8):

(!(sel.getClientRects

.length > 1)){
event.

Value = true;

;
}
code = sel.text;
tmp = sel.duplicate

;
tmp.moveToPo

(r.getBoundingClientRect

.left, sel.getClientRects

[0].top);

(sel.parentElement

!= tmp.parentElement

)

;;
sel.

EndPo

(\'startToStart\', tmp);
sel.text = sel.text.replace(/^\\t/gm, \'\');
code = code.replace(/^\\t/gm, \'\').replace(/\\r\\n/g, \'\\r\');
r.findText(code);
r.select

;

(9):

(sel.getClientRects

.length > 1){
code = sel.text;
tmp = sel.duplicate

;
tmp.moveToPo

(r.getBoundingClientRect

.left, sel.getClientRects

[0].top);

(sel.parentElement

!= tmp.parentElement

)

;
sel.

EndPo

(\'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

;
}

{
sel.text = \'\\t\';
sel.select

;
}

(13):
tmp = sel.duplicate

;
tmp.moveToPo

(r.getBoundingClientRect

.left, sel.getClientRects

[0].top);

(sel.parentElement

!= tmp.parentElement

)

;
tmp.

EndPo

(\'endToEnd\', sel);
sel.text = \'\\r\\n\' + tmp.text.replace(tmp.text.replace(/^[\\t ]+/g, \"\"),\"\");

sel.select

;

;
default:
event.

Value = true;

;
}

;
}

function runcode

{
var str = document.getElementById(\"txt_

\").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+\' _disibledevent=>code_win.document.writeln(\"window.onerror = reportError;\");
code_win.document.writeln(\"<\\/script>\");
code_win.document.writeln(str);
code_win.document.close

;

;
}

function savecode

{
var str = document.getElementById(\"txt_

\").value;
var code_win = window.open(\'about:blank\',\'_blank\',\'top=10000\');
code_win.document.open

;
code_win.document.writeln(str);
code_win.document.close

;
code_win.document.execCommand(\'saveas\',\'\',\'code.html\');
code_win.close

;

;
}

function goto(ln) {

(!/^\\d+$/.test(ln) || ln

;
var obj = document.getElementById(\"txt_

\");
var rng = obj.createTextRange

;
var arr = obj.value.split(/\\n/);

(ln>arr.length) ln = arr.length;
var str_tmp = \"\";
for(var i=0; i<ln-1; i

) {
str_tmp

arr[i];
}
rng.moveStart(\'character\',str_tmp.length);
str_tmp = \"\";
for(i=ln; i<arr.length; i

) {
str_tmp

arr[i];
}
rng.moveEnd(\'character\',-str_tmp.length);
rng.select

;

;
}

window.onload = function

{document.getElementById(\"txt_

\").value = \"<script>\\nalert(\')\\n<\\/script>\";}
</script>
<BODY>
<table width=\'600\'

=\'list\' border=\'1\' bgcolor=\'#eeeeee\' bordercolorlight=\'#000000\' bordercolordark=\'#FFFFFF\' cellpadding=\'0\' cellspacing=\'0\'>
<tr bgcolor=\'#cccccc\'>
<td colspan=\'2\' height=\'20\' align=\'center\'><b>Debug Textarea</b></td>
</tr>
<tr>
<td colspan=\'2\'>
<table width=\'95%\' border=\'0\' align=\'center\' >
<tr>
<td align=\'center\'><br />
<textarea id=\'txt_ln\' name=\'content\' rows=\'10\' style=\'width:40px;overflow:hidden;height:200px;border-right:0px;text-align:right;line-height:14px\' _disibledevent=> <script>for(var i=1; i<=20; i

) document.getElementById(\'txt_ln\').value

i + \'\\n\';</script>
</td>
</tr>
<tr>
<td align=\'center\'><br />
<input type=\'button\' value=\' 运行 \' _disibledevent=> <input type=\'button\' value=\' 保存 \' _disibledevent=> <input type=\'button\' value=\' 跳转 \' _disibledevent=> </td>
</tr>
</table>
</td>
</tr>
</table>
</BODY>
</HTML>

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