“undefined"从regex执行的值
"undefined" values from regex exec
我是乞丐。我想把搜索字符串(regex + exec)的索引按下"RUN"按钮后进入数组。我沉思着，推着。我有问题在while循环-可能是因为闭包。我得到array [undefine, undefined.....]。字符串取自textarea.value
查看JSFiddle代码http://jsfiddle.net/andre81/eXrQq/8/
function TrimReport () {
'use strict';
var ReportTxt = document.getElementById('RaportInput');
var Str = ReportTxt.value;
var re = /'<tr'>/gmi;
var result = [];
var val;
var match;
var div = document.getElementById('output');
while (match = re.exec(Str)) {
val = match.index;
result.push(val.lastIndex);
div.innerHTML = div.innerHTML + val + '<br>';
//console.log(match.index);
};
div.innerHTML = div.innerHTML + result + '<br>';
//console.log(result);
};
//Initial function:
function init() {
'use strict';
if(document && document.getElementById) {
var bttn = document.getElementById('RUN');
bttn.onclick = TrimReport;
} //if end
//alert('inside init');
//console.log('inside init');
}//init end
window.onload = init;
<div id="input">
<textarea cols="160" rows="18" id="RaportInput">
<!-- IMPORTED CONTENT inside TEXTAREA -->
<p><center><h1> Revit Coordination Report </h1></center></p>
<p><center><h2> In a linked project </h2></center></p>
<p><table border=on> <tr> <td> New/Unresolved </td> <td> Floor opening cut </td> <td> Check whether an Element exists </td> <td> Element deleted </td> <td> : (Deleted element ) : id = -1 <br> SEG06 : Floor opening cut : Opening Cut : id 1060252 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Floor opening cut </td> <td> Check whether an Element exists </td> <td> Element deleted </td> <td> : (Deleted element ) : id = -1 <br> SEG06 : Floor opening cut : Opening Cut : id 1060259 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Floor opening cut </td> <td> Check whether an Element exists </td> <td> Element deleted </td> <td> : (Deleted element ) : id = -1 <br> SEG06 : Floor opening cut : Opening Cut : id 1061236 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Floor opening cut </td> <td> Check whether an Element exists </td> <td> Element deleted </td> <td> : (Deleted element ) : id = -1 <br> SEG11 : Floor opening cut : Opening Cut : id 1549469 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Floors </td> <td> Check whether an Element exists </td> <td> Element deleted </td> <td> : (Deleted element ) : id = -1 <br> SEG11 : Floors : Floor : h=28cm : id 1549457 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Floors </td> <td> Maintain Floor elevations </td> <td> Floor elevation changed </td> <td> P1218_WOOD_ARCHITEKTURA.rvt : RVT_Links : Floors : Floor : h=28cm : id 2367719 <br> SEG08 : Floors : Floor : h=28cm : id 332807 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Floors </td> <td> Maintain Floor elevations </td> <td> Floor elevation changed </td> <td> P1218_WOOD_ARCHITEKTURA.rvt : RVT_Links : Floors : Floor : h=28cm : id 2378060 <br> SEG04 : Floors : Floor : h=28cm : id 997351 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Floors </td> <td> Monitor Floor Sketches </td> <td> Sketches are different </td> <td> P1218_WOOD_ARCHITEKTURA.rvt : RVT_Links : Floors : Floor : h=28cm : id 2378060 <br> SEG04 : Floors : Floor : h=28cm : id 997351 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Floors </td> <td> Monitor Floor Sketches </td> <td> Sketches are different </td> <td> P1218_WOOD_ARCHITEKTURA.rvt : External_Walls : Floors : Floor : h=28cm : id 2723982 <br> SEG13 : Floors : Floor : h=28cm : id 1775643 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Floors </td> <td> Monitor new Floor openings </td> <td> New Openings Detected in 'Floor : h=28cm' </td> <td> P1218_WOOD_ARCHITEKTURA.rvt : RVT_Links : Floors : Floor : h=28cm : id 2378060 <br> SEG04 : Floors : Floor : h=28cm : id 997351 <br> SEG04 : Floor opening cut : Opening Cut : id 1808079 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Floors </td> <td> Monitor new Floor openings </td> <td> New Openings Detected in 'Floor : h=28cm' </td> <td> P1218_WOOD_ARCHITEKTURA.rvt : External_Walls : Floors : Floor : h=28cm : id 2723982 <br> SEG13 : Floors : Floor : h=28cm : id 1775643 <br> P1218_WOOD_ARCHITEKTURA.rvt : Shafts : Shaft Openings : Opening Cut : id 1203484 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Walls </td> <td> Check whether an Element exists </td> <td> Element deleted </td> <td> P1218_WOOD_ARCHITEKTURA.rvt : RVT_Links : Walls : Basic Wall : konstrukcja_wall box section_400 : id 2356962 <br> : (Deleted element ) : id = 1597600 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Walls </td> <td> Check whether an Element exists </td> <td> Element deleted </td> <td> : (Deleted element ) : id = -1 <br> SEG10 : Walls : Basic Wall : Sc-300mm : id 1761197 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Walls </td> <td> Check whether an Element exists </td> <td> Element deleted </td> <td> : (Deleted element ) : id = -1 <br> SEG13 : Walls : Basic Wall : Sc-300mm : id 1773182 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Walls </td> <td> Check whether an Element exists </td> <td> Element deleted </td> <td> : (Deleted element ) : id = -1 <br> SEG13 : Walls : Basic Wall : Sc-250mm : id 1773190 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Walls </td> <td> Check whether an Element exists </td> <td> Element deleted </td> <td> : (Deleted element ) : id = -1 <br> SEG13 : Walls : Basic Wall : Sc-250mm : id 1773202 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Walls </td> <td> Maintain wall elevation/height </td> <td> Wall Elevations are different </td> <td> P1218_WOOD_ARCHITEKTURA.rvt : Internal_Structural_Walls : Walls : Basic Wall : konstrukcja_sc_300 : id 1834524 <br> SEG04 : Walls : Basic Wall : Sc-300mm : id 996843 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Walls </td> <td> Monitor Wall Sketches </td> <td> Sketches are different </td> <td> P1218_WOOD_ARCHITEKTURA.rvt : Internal_Walls : Walls : Basic Wall : konstrukcja_sc_300 : id 2643467 <br> SEG06 : Walls : Basic Wall : Sc-300mm : id 1650596 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Walls </td> <td> Monitor Wall Sketches </td> <td> Sketches are different </td> <td> P1218_WOOD_ARCHITEKTURA.rvt : Internal_Walls : Walls : Basic Wall : konstrukcja_sc_250 : id 2643508 <br> SEG06 : Walls : Basic Wall : Sc-250mm : id 1656518 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Walls </td> <td> Monitor Wall Sketches </td> <td> Sketches are different </td> <td> P1218_WOOD_ARCHITEKTURA.rvt : Internal_Walls : Walls : Basic Wall : konstrukcja_sc_250 : id 2643510 <br> SEG06 : Walls : Basic Wall : Sc-250mm : id 1657659 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Walls </td> <td> Monitor Wall Sketches </td> <td> Sketches are different </td> <td> P1218_WOOD_ARCHITEKTURA.rvt : Internal_Walls : Walls : Basic Wall : konstrukcja_sc_250 : id 2643511 <br> SEG06 : Walls : Basic Wall : Sc-250mm : id 1657688 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Walls </td> <td> Monitor Wall Sketches </td> <td> Sketch is missing </td> <td> P1218_WOOD_ARCHITEKTURA.rvt : Internal_Walls : Walls : Basic Wall : konstrukcja_sc_250 : id 2643512 <br> SEG06 : Walls : Basic Wall : Sc-250mm : id 1657947 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Walls </td> <td> Monitor Wall Sketches </td> <td> Sketch is missing </td> <td> P1218_WOOD_ARCHITEKTURA.rvt : Internal_Walls : Walls : Basic Wall : konstrukcja_sc_250 : id 2643513 <br> SEG06 : Walls : Basic Wall : Sc-250mm : id 1657965 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Walls </td> <td> Monitor Wall Sketches </td> <td> Sketches are different </td> <td> P1218_WOOD_ARCHITEKTURA.rvt : Internal_Walls : Walls : Basic Wall : konstrukcja_sc_250 : id 2643514 <br> SEG06 : Walls : Basic Wall : Sc-250mm : id 1657979 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Walls </td> <td> Monitor Wall Sketches </td> <td> Sketches are different </td> <td> P1218_WOOD_ARCHITEKTURA.rvt : Internal_Walls : Walls : Basic Wall : konstrukcja_sc_250 : id 2643515 <br> SEG06 : Walls : Basic Wall : Sc-250mm : id 1657989 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Walls </td> <td> Monitor Wall Sketches </td> <td> Sketches are different </td> <td> P1218_WOOD_ARCHITEKTURA.rvt : Internal_Walls : Walls : Basic Wall : konstrukcja_sc_250 : id 2643516 <br> SEG06 : Walls : Basic Wall : Sc-250mm : id 1657999 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Walls </td> <td> Monitor Wall Sketches </td> <td> Sketch is missing </td> <td> P1218_WOOD_ARCHITEKTURA.rvt : Internal_Walls : Walls : Basic Wall : konstrukcja_sc_250 : id 2643517 <br> SEG06 : Walls : Basic Wall : Sc-250mm : id 1658013 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Walls </td> <td> Monitor Wall Sketches </td> <td> Sketch is missing </td> <td> P1218_WOOD_ARCHITEKTURA.rvt : Internal_Walls : Walls : Basic Wall : konstrukcja_sc_250 : id 2643518 <br> SEG06 : Walls : Basic Wall : Sc-250mm : id 1658027 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Walls </td> <td> Monitor Wall Sketches </td> <td> Sketch is missing </td> <td> P1218_WOOD_ARCHITEKTURA.rvt : Internal_Walls : Walls : Basic Wall : konstrukcja_sc_300 : id 2643611 <br> SEG10 : Walls : Basic Wall : Sc-300mm : id 1760438 </td> <td> </td> </tr>
<tr> <td> New/Unresolved </td> <td> Walls </td> <td> Monitor Wall Sketches </td> <td> Sketches are different </td> <td> P1218_WOOD_ARCHITEKTURA.rvt : External_Walls : Walls : Basic Wall : konstrukcja_sc_250 : id 2723649 <br> SEG13 : Walls : Basic Wall : Sc-250mm : id 1727350 </td> <td> </td> </tr>
</table>
</textarea>
</div>
<button type="button" id="RUN">RUN</button>
<div id="output"></div>
您的while循环中存在多个相关错误。请参阅RegExp.exec()函数的文档，了解如何正确使用它。最直接的错误是:
-
val是一个整数(即"从0开始的字符串匹配索引")，而不是一个对象。 -
lastIndex属性实际上属于re对象。
请参阅我上面提供的链接，以获得如何正确循环的示例
在body标签之前使用下面的脚本/使用Dom Ready
Demo: JS Fiddle Link
以上技术避免Dom Ready方法，这会提高性能。
<script type="text/javascript">
/ * You code */
</script>
</body>
谢谢你的帮助。我已经改变:
result.push(val.lastIndex);
:
result.push(val);
inside while循环。它似乎工作得很好，但我仍然不满意我的知识。我把更正后的代码放在这里:JSFiddle
@Venkat这个脚本的预期输出是采用这个HTML表:JSFiddle并根据COLUMNS的类别和ID对其进行切片，并将它们放入ARRAYS中。例如:
[Floors, Monitor Floor Sketches, [id 1775643, id 997351, id 1652983, .....]]
[Floors, Monitor new Floor openings , [ id 997351, id 997351, id 1652343, .....]]
[Walls, Maintain wall position , [ id 997351, id 997351, id 1652978, .....]]
等....
[类别,类别,[id, id, id 3…]]
唯一的事情-我不会在这些数组中添加"id"前缀。所有这些数组，我将使用在Revit软件的元素选择ID -写在YouTube
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