正则问题

[sunashang]

<div class="l-body l-selected">
<div class="l-box"></div><div class="l-box"></div><div class="l-box l-expandable-close">
</div><div class="l-box l-checkbox l-checkbox-unchecked"></div><div class="l-box l-tree-icon-folder">
</div><span>xxx<input value="5" type="hidden"></span></div><ul style="display: none;" class="l-children">
<li treedataindex="4" isexpand="undefined" outlinelevel="4" class="l-first "><div class="l-body">
<div class="l-box"></div><div class="l-box"></div><div class="l-box"></div><div class="l-box l-note">
</div><div class="l-box l-checkbox l-checkbox-unchecked"></div><div class="l-box l-tree-icon-leaf">
</div><span>yyy<input value="6" type="hidden"></span></div></li>
<li treedataindex="5" isexpand="undefined" outlinelevel="4" class="l-last ">
<div class="l-body"><div class="l-box"></div><div class="l-box"></div>
<div class="l-box"></div><div class="l-box l-note-last"></div>
<div class="l-box l-checkbox l-checkbox-unchecked"></div>
<div class="l-box l-tree-icon-leaf"></div>
<span>zzz<input value="7" type="hidden"></span></div></li></ul> 用js正则获取第一个input的value

[EnForGrass]

/(?is)<span>\w*<input\s*value="([^"]*)"\s*type="hidden"></span>/
取第一个就是了