<div class="selector-wrapper">
<div id="uniform-product-select-option-0" class="selector">
<span style="-moz-user-select: none;">6</span>
<select id="product-select-option-0" class="single-option-selector" data-option="option1" style="opacity: 0;">
<option value="6">6</option>
<option value="6.5">6.5</option>
<option value="7">7</option>
<option value="7.5">7.5</option>
<option value="8">8</option>
<option value="8.5">8.5</option>
<option value="9">9</option>
<option value="9.5">9.5</option>
<option value="10">10</option>
<option value="10.5">10.5</option>
<option value="11">11</option>
<option value="11.5">11.5</option>
<option value="12">12</option>
<option value="13">13</option>
</select>
</div>
</div>
<select id="product-select" name="id" style="display: none;">
<option id="variant-1404889668" value="1404889668"> 6 for $130.00 </option>
<option id="variant-1404894084" value="1404894084"> 6.5 for $130.00 </option>
<option id="variant-1404900932" value="1404900932"> 7 for $130.00 </option>
<option id="variant-1404905540" class="disabled" disabled="disabled" value="1404905540"> 7.5 — SOLD OUT </option>
<option id="variant-1369994436" class="disabled" disabled="disabled" value="1369994436"> 8 — SOLD OUT </option>
<option id="variant-1369994500" class="disabled" disabled="disabled" value="1369994500"> 8.5 — SOLD OUT </option>
<option id="variant-1369994564" class="disabled" disabled="disabled" value="1369994564"> 9 — SOLD OUT </option>
<option id="variant-1369994628" class="disabled" disabled="disabled" value="1369994628"> 9.5 — SOLD OUT </option>
<option id="variant-1369994692" class="disabled" disabled="disabled" value="1369994692"> 10 — SOLD OUT </option>
<option id="variant-1369994756" class="disabled" disabled="disabled" value="1369994756"> 10.5 — SOLD OUT </option>
<option id="variant-1369994820" class="disabled" disabled="disabled" value="1369994820"> 11 — SOLD OUT </option>
<option id="variant-1369994884" class="disabled" disabled="disabled" value="1369994884"> 11.5 — SOLD OUT </option>
<option id="variant-1369994948" class="disabled" disabled="disabled" value="1369994948"> 12 — SOLD OUT </option>
<option id="variant-1369995012" class="disabled" disabled="disabled" value="1369995012"> 13 — SOLD OUT </option>
</select>
以上是我试图解析的HTML。
当我在这里使用我的代码时：
function info(){
var array = document.getElementsByTagName("option");
for(i=0;i<array.length;i++){
var item = array[i].innerHTML;
alert(item);
}
}
我只获得＆＃34; display：none＆＃34;下的选项值。选择元素。而且我无法选择id为＆＃34; product-select-option-0＆＃34;的select元素。只有＆＃34;显示：无＆＃34;可以使用javascript定位select id。知道如何用id＆＃34; product-select-option-0＆＃34;来改变select元素的值。 网站是：http://shop.cncpts.com/products/air-max-1-woven-black-black-dark-grey
编辑： 这是HTML的其余部分，因此您不必访问该网站。 我也在使用greasemonkey。
<div id="container">
<header id="header" class="group">
<p class="linkhome">
<a class="ir" href="http://www.cncpts.com/">CONCEPTS</a>
</p>
<div id="search">
<form action="/search" method="get">
<fieldset>
<legend>Search</legend>
<label for="s">Search:</label>
<input name="q" value="" id="result-q" type="text">
<button type="submit">Search</button>
</fieldset>
</form>
<ul class="group social">
<li class="link-check-out"><a href="/cart">Cart <span>00 items</span></a></li>
<li><a href="/cart">Check Out</a></li>
</ul>
<!-- /social -->
</div>
<!-- /search -->
<nav id="nav">
<ul class="group">
<li id="nav-shop" class="active">
<a href="http://shop.cncpts.com/">Shop</a>
</li>
<li id="nav-about">
<a href="http://www.cncpts.com/about/">About</a>
</li>
<li id="nav-blog">
<a href="http://www.cncpts.com/blog/">Blog</a>
</li>
<li id="nav-on-air">
<a href="http://www.cncpts.com/on-air/">On Air</a>
</li>
<li id="nav-contact">
<a href="http://www.cncpts.com/contact/">Contact</a>
</li>
</ul>
</nav>
<!-- /nav -->
<nav id="subnav">
<ul>
<li><a href="/collections/apparel" title="">Apparel</a></li>
<li><a href="/collections/footwear" title="">Footwear</a></li>
<li><a href="/collections/accessories" title="">Accessories</a></li>
<li><a href="/collections/womens" title="">Women</a></li>
<li class="sale"><a href="/collections/zz-special-promotion/sale" title="">Special Promotion</a></li>
</ul>
</nav>
<!-- /subnav -->
</header>
<!-- /#header -->
<div id="main" class="group" role="main">
<div id="shop" class="group">
<div id="shop-content">
<script type="text/javascript">
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"+k.activeClass);m.removeClass(k.checkedClass);if(n.is(":checked")){m.addClass(k.checkedClass)}if(n.is(":disabled")){p.addClass(k.disabledClass)}else{p.removeClass(k.disabledClass)}}else{if(n.is(":radio")){var m=n.closest("span");var p=n.closest("div");p.removeClass(k.hoverClass+" "+k.focusClass+" "+k.activeClass);m.removeClass(k.checkedClass);if(n.is(":checked")){m.addClass(k.checkedClass)}if(n.is(":disabled")){p.addClass(k.disabledClass)}else{p.removeClass(k.disabledClass)}}else{if(n.is(":file")){var p=n.parent("div");var o=n.siblings(k.filenameClass);btnTag=n.siblings(k.fileBtnClass);p.removeClass(k.hoverClass+" "+k.focusClass+" "+k.activeClass);o.text(n.val());if(n.is(":disabled")){p.addClass(k.disabledClass)}else{p.removeClass(k.disabledClass)}}else{if(n.is(":submit")||n.is(":reset")||n.is("button")||n.is("a")||l.is("input[type=button]")){var p=n.closest("div");p.removeClass(k.hoverClass+" "+k.focusClass+" "+k.activeClass);if(n.is(":disabled")){p.addClass(k.disabledClass)}else{p.removeClass(k.disabledClass)}}}}}}})};return this.each(function(){if(a.support.selectOpacity){var l=a(this);if(l.is("select")){if(l.attr("multiple")!=true){if(l.attr("size")==undefined||l.attr("size")<=1){e(l)}}}else{if(l.is(":checkbox")){f(l)}else{if(l.is(":radio")){c(l)}else{if(l.is(":file")){h(l)}else{if(l.is(":text, :password, input[type='email']")){j(l)}else{if(l.is("textarea")){g(l)}else{if(l.is("a")||l.is(":submit")||l.is(":reset")||l.is("button")||l.is("input[type=button]")){i(l)}}}}}}}}})}})(jQuery);
</script>
<div class="product-images">
<ul class="product-image-display">
<li class="active">
<a class="product-showcase thickbox" rel="set_product_images" href="//cdn.shopify.com/s/files/1/0076/1662/products/shopify_nike-air-max-1-woven_00c_zoom_1024x1024.jpg?v=1430159412">
<img src="//cdn.shopify.com/s/files/1/0076/1662/products/shopify_nike-air-max-1-woven_00c_zoom_large.jpg?v=1430159412 }}" alt="" "="" height="300" width="300">
<img class="lightbox-trigger" src="https://cdn.shopify.com/s/files/1/0076/1662/t/1/assets/lightbox-trigger.gif?25633" alt="View Fullsize">
</a>
</li>
<li style="display: none;" class="">
<a class="product-showcase thickbox" rel="set_product_images" href="//cdn.shopify.com/s/files/1/0076/1662/products/nike-air-max-1-woven_00c_zoom2_1024x1024.jpg?v=1430159412">
<img src="//cdn.shopify.com/s/files/1/0076/1662/products/nike-air-max-1-woven_00c_zoom2_large.jpg?v=1430159412 }}" alt="" "="" height="300" width="300">
<img class="lightbox-trigger" src="https://cdn.shopify.com/s/files/1/0076/1662/t/1/assets/lightbox-trigger.gif?25633" alt="View Fullsize">
</a>
</li>
<li style="display: none;" class="">
<a class="product-showcase thickbox" rel="set_product_images" href="//cdn.shopify.com/s/files/1/0076/1662/products/nike-air-max-1-woven_00c_zoom3_1024x1024.jpg?v=1430159412">
<img src="//cdn.shopify.com/s/files/1/0076/1662/products/nike-air-max-1-woven_00c_zoom3_large.jpg?v=1430159412 }}" alt="" "="" height="300" width="300">
<img class="lightbox-trigger" src="https://cdn.shopify.com/s/files/1/0076/1662/t/1/assets/lightbox-trigger.gif?25633" alt="View Fullsize">
</a>
</li>
<li style="display: none;" class="">
<a class="product-showcase thickbox" rel="set_product_images" href="//cdn.shopify.com/s/files/1/0076/1662/products/nike-air-max-1-woven_00c_zoom4_1024x1024.jpg?v=1430159412">
<img src="//cdn.shopify.com/s/files/1/0076/1662/products/nike-air-max-1-woven_00c_zoom4_large.jpg?v=1430159412 }}" alt="" "="" height="300" width="300">
<img class="lightbox-trigger" src="https://cdn.shopify.com/s/files/1/0076/1662/t/1/assets/lightbox-trigger.gif?25633" alt="View Fullsize">
</a>
</li>
<li style="display: none;" class="">
<a class="product-showcase thickbox" rel="set_product_images" href="//cdn.shopify.com/s/files/1/0076/1662/products/nike-air-max-1-woven_00c_zoom5_1024x1024.jpg?v=1430159412">
<img src="//cdn.shopify.com/s/files/1/0076/1662/products/nike-air-max-1-woven_00c_zoom5_large.jpg?v=1430159412 }}" alt="" "="" height="300" width="300">
<img class="lightbox-trigger" src="https://cdn.shopify.com/s/files/1/0076/1662/t/1/assets/lightbox-trigger.gif?25633" alt="View Fullsize">
</a>
</li>
</ul>
<ul class="branded slideshow-nav group">
<li class="active">
<a href="//cdn.shopify.com/s/files/1/0076/1662/products/shopify_nike-air-max-1-woven_00c_zoom_large.jpg?v=1430159412">
01
</a>
</li>
<li>
<a href="//cdn.shopify.com/s/files/1/0076/1662/products/nike-air-max-1-woven_00c_zoom2_large.jpg?v=1430159412">
02
</a>
</li>
<li>
<a href="//cdn.shopify.com/s/files/1/0076/1662/products/nike-air-max-1-woven_00c_zoom3_large.jpg?v=1430159412">
03
</a>
</li>
<li>
<a href="//cdn.shopify.com/s/files/1/0076/1662/products/nike-air-max-1-woven_00c_zoom4_large.jpg?v=1430159412">
04
</a>
</li>
<li>
<a href="//cdn.shopify.com/s/files/1/0076/1662/products/nike-air-max-1-woven_00c_zoom5_large.jpg?v=1430159412">
05
</a>
</li>
</ul>
</div>
<div class="product-details group">
<div class="product-info entry">
<h2 id="product-title">Air Max 1 Woven (Black/Black-Dark Grey)</h2>
<div class="price">
<span id="price-field">$130.00 USD</span>
</div>
<div id="product-description">
Air Max 1 Woven (Black/Black-Dark Grey)
</div>
<div class="share">
<p>Share:</p>
<ul class="bonus-info">
<li><a href="http://www.facebook.com/share.php?u=http://shop.cncpts.com/products/air-max-1-woven-black-black-dark-grey&t=Air Max 1 Woven (Black/Black-Dark Grey)">Facebook</a></li>
<li><a href="http://twitter.com/home?status=Air Max 1 Woven (Black/Black-Dark Grey) - http://shop.cncpts.com/products/air-max-1-woven-black-black-dark-grey">Twitter</a></li>
</ul>
</div>
</div>
<div class="product-purchase">
<div class="product-form">
<form action="/cart/add" method="post">
<div id="product-variants">
<div class="selector-wrapper"><div id="uniform-product-select-option-0" class="selector"><span style="-moz-user-select: none;">6</span><select style="opacity: 0;" id="product-select-option-0" data-option="option1" class="single-option-selector"><option value="6">6</option><option value="6.5">6.5</option><option value="7">7</option><option value="7.5">7.5</option><option value="8">8</option><option value="8.5">8.5</option><option value="9">9</option><option value="9.5">9.5</option><option value="10">10</option><option value="10.5">10.5</option><option value="11">11</option><option value="11.5">11.5</option><option value="12">12</option><option value="13">13</option></select></div></div><select style="display: none;" id="product-select" name="id">
<option value="1404889668" id="variant-1404889668">
6 for $130.00
</option>
<option value="1404894084" id="variant-1404894084">
6.5 for $130.00
</option>
<option value="1404900932" id="variant-1404900932">
7 for $130.00
</option>
<option value="1404905540" id="variant-1404905540" disabled="disabled" class="disabled">
7.5 — SOLD OUT
</option>
<option value="1369994436" id="variant-1369994436" disabled="disabled" class="disabled">
8 — SOLD OUT
</option>
<option value="1369994500" id="variant-1369994500" disabled="disabled" class="disabled">
8.5 — SOLD OUT
</option>
<option value="1369994564" id="variant-1369994564" disabled="disabled" class="disabled">
9 — SOLD OUT
</option>
<option value="1369994628" id="variant-1369994628" disabled="disabled" class="disabled">
9.5 — SOLD OUT
</option>
<option value="1369994692" id="variant-1369994692" disabled="disabled" class="disabled">
10 — SOLD OUT
</option>
<option value="1369994756" id="variant-1369994756" disabled="disabled" class="disabled">
10.5 — SOLD OUT
</option>
<option value="1369994820" id="variant-1369994820" disabled="disabled" class="disabled">
11 — SOLD OUT
</option>
<option value="1369994884" id="variant-1369994884" disabled="disabled" class="disabled">
11.5 — SOLD OUT
</option>
<option value="1369994948" id="variant-1369994948" disabled="disabled" class="disabled">
12 — SOLD OUT
</option>
<option value="1369995012" id="variant-1369995012" disabled="disabled" class="disabled">
13 — SOLD OUT
</option>
</select>
<div class="selector-wrapper">
<div id="uniform-undefined" class="selector"><span style="-moz-user-select: none;">1</span><select style="opacity: 0;" name="quantity">
<option value="1">Quantity</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
</select></div>
</div>
</div>
<p class="cart-button">
<button style="background: none repeat scroll 0% 0% rgb(144, 54, 28);" type="submit" name="add" value="add" id="add-to-cart">Add to Cart</button>
</p>
</form>
</div>
<p class="cart-button"><a href="http://shop.cncpts.com">Keep Browsing</a></p>
<p class="cart-button"><a href="/collections/vendors?q=Nike">Shop more Nike</a></p>
</div>
</div>
答案 0 :(得分：1)
我假设你在info
document.ready，我刚刚对你的函数进行了以下更改
(function info(){
var array = document.getElementsByTagName("option");
for(i=0;i<array.length;i++){
var item = array[i].innerHTML;
alert(item);
}
})();
<强> Working FIDDLE
<强>更新
但是，在通过您的指定功能获取options时，我发现没有任何问题。检查 THIS FIDDLE