javascript - 关于。获取内部Div内容

Question

我正在尝试将 Div 的内容获取到另一个 div 中。基本上我已经使用 php 创建了一个动态颜色“选择器”，我想添加内部 div 的内容，即。单击相关颜色时将颜色名称传递给 JavaScript 变量。

看看这支笔

http://codepen.io/anon/pen/oXopmq

function coloursel() {

  var colour = document.getElementById("patchholder").firstChild.innerHTML;

  alert(colour);
}

/* shirt color name display style*/


#patchhome {
	position:relative;
	bottom:240px;
	display:inline-block;
	font-size: 13px;
	margin:3px;
}

#patchhome  p{
	font-size: 10px;
	margin-bottom:5px;
	display:inline-block;
}


#patchhome  h2{
	margin-left:-3px;
	
}

.colourname{ 
	white-space:nowrap;
	display:none; 
	position:absolute;
	top :145px;
	float:right;
	right:-3px;
}

.patchholder{
	float:left;
	font-size: 0;
	position:relative;
	display:inline-block;
	margin:2px;
	height:16px;
	width:16px;
}

.patchholder:hover + div{ 
	display:inline-block; 
	margin:1px;
	float:left;
}

<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Antique Cherry"  style="background:#971B2F;display:inline-block;"/><div id="colourname"class="colourname">Antique Cherry</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Cherry Red"  style="background:#AC2B37;display:inline-block;"/><div id="colourname"class="colourname">Cherry Red</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Daisy"  style="background:#FED141;display:inline-block;"/><div id="colourname"class="colourname">Daisy</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Forrest Green"  style="background:#273B33;display:inline-block;"/><div id="colourname"class="colourname">Forrest Green</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Heather Orange"  style="background:#FF8D6D;display:inline-block;"/><div id="colourname"class="colourname">Heather Orange</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Black"  style="background:#000000;display:inline-block;"/><div id="colourname"class="colourname">Black</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="White"  style="background:#FFFFFF;display:inline-block;"/><div id="colourname"class="colourname">White</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Navy"  style="background:#002A5C;display:inline-block;"/><div id="colourname"class="colourname">Navy</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Heliconia"  style="background:#DB3E79;display:inline-block;"/><div id="colourname"class="colourname">Heliconia</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Kiwi"  style="background:#A3A76D;display:inline-block;"/><div id="colourname"class="colourname">Kiwi</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Orange"  style="background:#DF6426;display:inline-block;"/><div id="colourname"class="colourname">Orange</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Royal"  style="background:#224D8F;display:inline-block;"/><div id="colourname"class="colourname">Royal</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Sport Grey"  style="background:#AFAFAF;display:inline-block;"/><div id="colourname"class="colourname">Sport Grey</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Heather Irish Green"  style="background:#00966C;display:inline-block;"/><div id="colourname"class="colourname">Heather Irish Green</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Cardinal"  style="background:#8D2838;display:inline-block;"/><div id="colourname"class="colourname">Cardinal</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Chestnut"  style="background:#83635C;display:inline-block;"/><div id="colourname"class="colourname">Chestnut</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="DK Chocolate"  style="background:#423238;display:inline-block;"/><div id="colourname"class="colourname">DK Chocolate</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Heather Military Green"  style="background:#7E7F74;display:inline-block;"/><div id="colourname"class="colourname">Heather Military Green</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Heather Purple"  style="background:#614B79;display:inline-block;"/><div id="colourname"class="colourname">Heather Purple</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Indigo Blue"  style="background:#486D87;display:inline-block;"/><div id="colourname"class="colourname">Indigo Blue</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Light Blue"  style="background:#A3B3CB;display:inline-block;"/><div id="colourname"class="colourname">Light Blue</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Purple"  style="background:#3F2A56;display:inline-block;"/><div id="colourname"class="colourname">Purple</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Sand"  style="background:#CABFAD;display:inline-block;"/><div id="colourname"class="colourname">Sand</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Antique Heliconia"  style="background:#AA0061;display:inline-block;"/><div id="colourname"class="colourname">Antique Heliconia</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Charcoal"  style="background:#66676C;display:inline-block;"/><div id="colourname"class="colourname">Charcoal</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Cobalt"  style="background:#374393;display:inline-block;"/><div id="colourname"class="colourname">Cobalt</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="DK Heather"  style="background:#3F4444;display:inline-block;"/><div id="colourname"class="colourname">DK Heather</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Heather Navy"  style="background:#333F48;display:inline-block;"/><div id="colourname"class="colourname">Heather Navy</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Heather Royal"  style="background:#307FE2;display:inline-block;"/><div id="colourname"class="colourname">Heather Royal</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Irish Green"  style="background:#009E69;display:inline-block;"/><div id="colourname"class="colourname">Irish Green</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Military Green"  style="background:#63655A;display:inline-block;"/><div id="colourname"class="colourname">Military Green</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Red"  style="background:#B1302A;display:inline-block;"/><div id="colourname"class="colourname">Red</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Sapphire"  style="background:#0077B5;display:inline-block;"/><div id="colourname"class="colourname">Sapphire</div></span>


<span class="patchholder"id="patchholder" onclick="coloursel(this)" title="Antique Sapphire"  style="background:#006A8E;display:inline-block;"/><div id="colourname"class="colourname">Antique Sapphire</div></span>

抱歉，如果这个写得不好，实践不好，在错误的地方或者之前被问过。我还在学习中。

无论如何，感谢您的浏览。

Answer 1

当您为多个元素提供相同的 id(在本例中为占位符)时，DOM 只能识别最后一个元素。在这种情况下，您应该将 colorsel 函数修改为以下内容

         function coloursel(elem) {
              var colour = elem.firstChild.innerHTML;

              alert(colour);
          }