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I have the following JavaScript (the spaces in the <P>s are non-breaking):
var html = '...<li>sub 2</li></ol></li></ol>\n\
<p> i. subsub 1</p>\n\
<p> ii. subsub 2</p>\n\
<ol start="2"> \n\
<ol start="3"> \n\
<li>sub 3</li></ol>...';
$(function () {
var nestedListFixer = /(?:<\/li><\/ol>\s*)+(?:<p>(?:&(?:nbsp|\#0*160|x0*A0);)+(?:\s[ivxlcdm]+\.)(?:&(?:nbsp|\#0*160|x0*A0);)+\s(.*?)<\/p>\s*)+(?:<ol(?:\sstyle=\"[^\"]+\")?\sstart=\"[^\"]+\">\s*)+/i;
html = html.replace(nestedListFixer, function($0, $1){
var lis = ""
$.each($1, function () {
lis += "<li>" + this + "</li>\n";
});
alert("<ol>\n" + lis + "</ol></li>");
return "<ol>\n" + lis + "</ol></li>";
});
});
The alert()'s output:
<ol>
<li>s</li>
<li>u</li>
<li>b</li>
<li>s</li>
<li>u</li>
<li>b</li>
<li> </li>
<li>2</li>
</ol></li>
Here's what I hoped it would be:
<ol>
<li>subsub 1</li>
<li>subsub 2</li>
</ol></li>
How do I correctly loop through each match in the $1?
Update: simplified pattern and matching example:
var text = '1ab2cb3cd4ab5cb6cd7';
$(function () {
var textFixer = /(?:a)(?:b(.*?)c)+(?:d)/i;
text = text.replace(textFixer, function($0, $1){
var numbers = "";
$.each($1, function () {
numbers += this;
});
alert(numbers);
return numbers;
});
alert(text);
});
// actual text:
// 13467
// desired text:
// 1234567
I have the following JavaScript (the spaces in the <P>s are non-breaking):
var html = '...<li>sub 2</li></ol></li></ol>\n\
<p> i. subsub 1</p>\n\
<p> ii. subsub 2</p>\n\
<ol start="2"> \n\
<ol start="3"> \n\
<li>sub 3</li></ol>...';
$(function () {
var nestedListFixer = /(?:<\/li><\/ol>\s*)+(?:<p>(?:&(?:nbsp|\#0*160|x0*A0);)+(?:\s[ivxlcdm]+\.)(?:&(?:nbsp|\#0*160|x0*A0);)+\s(.*?)<\/p>\s*)+(?:<ol(?:\sstyle=\"[^\"]+\")?\sstart=\"[^\"]+\">\s*)+/i;
html = html.replace(nestedListFixer, function($0, $1){
var lis = ""
$.each($1, function () {
lis += "<li>" + this + "</li>\n";
});
alert("<ol>\n" + lis + "</ol></li>");
return "<ol>\n" + lis + "</ol></li>";
});
});
The alert()'s output:
<ol>
<li>s</li>
<li>u</li>
<li>b</li>
<li>s</li>
<li>u</li>
<li>b</li>
<li> </li>
<li>2</li>
</ol></li>
Here's what I hoped it would be:
<ol>
<li>subsub 1</li>
<li>subsub 2</li>
</ol></li>
How do I correctly loop through each match in the $1?
Update: simplified pattern and matching example:
var text = '1ab2cb3cd4ab5cb6cd7';
$(function () {
var textFixer = /(?:a)(?:b(.*?)c)+(?:d)/i;
text = text.replace(textFixer, function($0, $1){
var numbers = "";
$.each($1, function () {
numbers += this;
});
alert(numbers);
return numbers;
});
alert(text);
});
// actual text:
// 13467
// desired text:
// 1234567
- Can you not simplify your code, regex, and markup so people can more easily understand your problem and therefore help you more? (Not a rhetorical question) – Sinan Taifour Commented Aug 11, 2009 at 18:07
- I've added a simpler version, does that make more sense? – travis Commented Aug 11, 2009 at 18:44
- Wait, "can you not..." were you saying I had already simplified it too much? – travis Commented Aug 11, 2009 at 18:46
- No, I was requesting a simpler version, which is what you did. Sorry for the confusion. – Sinan Taifour Commented Aug 11, 2009 at 18:48
3 Answers
Reset to default 5The updated example you've given would only match "3" not "13467" as you described. If you change your regexp to do global matching, it would return "36" and still not the "13467".
Your first example doesn't output anything either.
Are you just trying to get matches to the regular expression and loop through the matches?
If so,
var text = '1ab2cb3cd4ab5cb6cd7';
var matches = text.match(/(\d)/g);
for (i=0; i<matches.length; i++) {
alert(matches[i]);
}
Here's the solution that I came up with but it doesn't seem to be very efficient:
$(function () {
var nestedListFixer = /(?:<\/li><\/ol>\s*)+(?:<p>(?:&(?:nbsp|\#0*160|x0*A0);)+(?:\s[ivxlcdm]+\.)(?:&(?:nbsp|\#0*160|x0*A0);)+\s(.*?)<\/p>\s*)+(?:<ol(?:\sstyle=\"[^\"]+\")?\sstart=\"[^\"]+\">\s*)+/gi;
var nestedListItem = /<p>(?:&(?:nbsp|\#0*160|x0*A0);)+(?:\s[ivxlcdm]+\.)(?:&(?:nbsp|\#0*160|x0*A0);)+\s(.*?)<\/p>\s*/gi;
// fix nested lists
html = html.replace(nestedListFixer, function($0, $1){
var lis = ""
$.each($0.match(nestedListItem), function () {
lis += "<li>" + this.replace(nestedListItem, "$1") + "</li>\n";
});
return "<ol>\n" + lis + "</ol></li>";
});
});
...or for the simpler example above:
$(function () {
var textFixer = /(?:a)(?:b(.*?)c)+(?:d)/gi;
var textItem = /b(.*?)c/gi;
text = text.replace(textFixer, function($0, $1){
var numbers = "";
$.each($0.match(textItem), function () {
numbers += this.replace(textItem, "$1");
});
return numbers;
});
});
Doing a .replace() substitution, inside a loop of a .match() array, inside of a custom .replace() function just doesn't seem like it is very economical. It does give me the output that I was looking for though.
A pretty loop can be using hook pattern :
var text = '1ab2cb3cd4ab5cb6cd7';
text.match(/(\d)/g).forEach(function(element,index){
console.log(element)
});
本文标签： jqueryHow do I loop through a regex39s matches inside a replace in javascriptStack Overflow
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