jQuery 仅在不存在时才替换字符
我想替换所有 "<"和“>”与“[”和“]”，但我不想触摸/替换所有“
”或“
”
$('.wysiwyg textarea').live('keyup',function(){
wysiwyg_val = $(this).val();
wysiwyg_val = wysiwyg_val
.replace(/\n/g, "<br>")
.replace(/\{code\}\{type="(.*)"\}/g, '<code><pre class="$1">')
.replace(/\{img\}\{url="(.*)"\}/g, '<img src="$1"')
.replace(/\{code\}/g,"<pre><code>")
.replace(/\{\/code\}/g,"</code></pre>")
.replace(/\{code}/g,"</code></pre>")
.replace(/\{code\}\{(.*)}/g, '<code><pre class="$1">')
.replace(/\{\/img\}/g,'/>');
$('.wysiwyg-preview').html(wysiwyg_val);
});
i would like to replace all the "<" and ">" with "[" and "]" but i want to not touch/replace all the "<br>" or "</br>"
$('.wysiwyg textarea').live('keyup',function(){
wysiwyg_val = $(this).val();
wysiwyg_val = wysiwyg_val
.replace(/\n/g, "<br>")
.replace(/\{code\}\{type="(.*)"\}/g, '<code><pre class="$1">')
.replace(/\{img\}\{url="(.*)"\}/g, '<img src="$1"')
.replace(/\{code\}/g,"<pre><code>")
.replace(/\{\/code\}/g,"</code></pre>")
.replace(/\{code}/g,"</code></pre>")
.replace(/\{code\}\{(.*)}/g, '<code><pre class="$1">')
.replace(/\{\/img\}/g,'/>');
$('.wysiwyg-preview').html(wysiwyg_val);
});
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评论（2）
更简单的方法可能是分两步处理。
首先，将所有
<和>替换为[和]。其次，将
[br]和[/br]替换为
An easier way to do this is probably to handle it in two steps.
Firstly, replace all
<and>with[and].Secondly, replace
[br]and[/br]back with<br>and</br>.首先将
然后将
wysiwyg_val = wysiwyg_val.replace("","fakebropen").replace("
","fakebrclose" );
//然后进行操作
wysiwyg_val = wysiwyg_val.replace("fakebropen","").replace("fakebrclose","
");
first replace
<br>with fakebropenthen replace
</br>with fakebrclosewysiwyg_val = wysiwyg_val.replace("<br>","fakebropen").replace("</br>","fakebrclose");//make your operations then
wysiwyg_val = wysiwyg_val.replace("fakebropen","<br>").replace("fakebrclose","</br>");