有没有一种快速的方法来创建一个输入文本元素，在右边有一个图标，以清除输入元素本身(如谷歌搜索框)?
我环顾四周，但我只发现如何把一个图标作为输入元素的背景。有jQuery插件或其他什么?
我想在输入文本元素内的图标，类似于:
--------------------------------------------------
| X|
--------------------------------------------------
当前回答
根据MDN， <input type="search" />目前在所有现代浏览器中都被支持:
<输入类型=“搜索”=“清除此”。/>
但是，如果你想要在不同浏览器中保持一致的不同行为，这里有一些轻量级的替代方案，只需要JavaScript:
选项1 -始终显示'x':(示例如下)
Array.prototype.forEach.call(document.querySelectorAll('.clearable-input>[data-clear-input]'), function(el) { el.addEventListener('click', function(e) { e.target.previousElementSibling.value = ''; }); }); .clearable-input { position: relative; display: inline-block; } .clearable-input > input { padding-right: 1.4em; } .clearable-input > [data-clear-input] { position: absolute; top: 0; right: 0; font-weight: bold; font-size: 1.4em; padding: 0 0.2em; line-height: 1em; cursor: pointer; } .clearable-input > input::-ms-clear { display: none; } <p>Always display the 'x':</p> <div class="clearable-input"> <input type="text" /> <span data-clear-input>×</span> </div> <div class="clearable-input"> <input type="text" value="Clear this." /> <span data-clear-input>×</span> </div>
选项2 -只显示'x'当鼠标悬停在字段上时:(示例如下)
Array.prototype.forEach.call(document.querySelectorAll('.clearable-input>[data-clear-input]'), function(el) { el.addEventListener('click', function(e) { e.target.previousElementSibling.value = ''; }); }); .clearable-input { position: relative; display: inline-block; } .clearable-input > input { padding-right: 1.4em; } .clearable-input:hover > [data-clear-input] { display: block; } .clearable-input > [data-clear-input] { display: none; position: absolute; top: 0; right: 0; font-weight: bold; font-size: 1.4em; padding: 0 0.2em; line-height: 1em; cursor: pointer; } .clearable-input > input::-ms-clear { display: none; } <p>Only display the 'x' when hovering over the field:</p> <div class="clearable-input"> <input type="text" /> <span data-clear-input>×</span> </div> <div class="clearable-input"> <input type="text" value="Clear this." /> <span data-clear-input>×</span> </div>
选项3 -如果输入元素有值，只显示'x'(示例如下)
Array.prototype.forEach.call(document.querySelectorAll('.clearable-input'), function(el) { var input = el.querySelector('input'); conditionallyHideClearIcon(); input.addEventListener('input', conditionallyHideClearIcon); el.querySelector('[data-clear-input]').addEventListener('click', function(e) { input.value = ''; conditionallyHideClearIcon(); }); function conditionallyHideClearIcon(e) { var target = (e && e.target) || input; target.nextElementSibling.style.display = target.value ? 'block' : 'none'; } }); .clearable-input { position: relative; display: inline-block; } .clearable-input > input { padding-right: 1.4em; } .clearable-input >[data-clear-input] { display: none; position: absolute; top: 0; right: 0; font-weight: bold; font-size: 1.4em; padding: 0 0.2em; line-height: 1em; cursor: pointer; } .clearable-input > input::-ms-clear { display: none; } <p>Only display the 'x' if the `input` element has a value:</p> <div class="clearable-input"> <input type="text" /> <span data-clear-input>×</span> </div> <div class="clearable-input"> <input type="text" value="Clear this." /> <span data-clear-input>×</span> </div>
其他回答
如果你想让它像谷歌一样，那么你应该知道“X”实际上并不在<input>中——它们是彼此相邻的，外部容器样式看起来像文本框。
HTML:
<form>
<span class="x-input">
<input type="text" class="x-input-text" />
<input type="reset" />
</span>
</form>
CSS:
.x-input {
border: 1px solid #ccc;
}
.x-input input.x-input-text {
border: 0;
outline: 0;
}
例如:http://jsfiddle.net/VTvNX/
根据MDN， <input type="search" />目前在所有现代浏览器中都被支持:
<输入类型=“搜索”=“清除此”。/>
但是，如果你想要在不同浏览器中保持一致的不同行为，这里有一些轻量级的替代方案，只需要JavaScript:
选项1 -始终显示'x':(示例如下)
Array.prototype.forEach.call(document.querySelectorAll('.clearable-input>[data-clear-input]'), function(el) { el.addEventListener('click', function(e) { e.target.previousElementSibling.value = ''; }); }); .clearable-input { position: relative; display: inline-block; } .clearable-input > input { padding-right: 1.4em; } .clearable-input > [data-clear-input] { position: absolute; top: 0; right: 0; font-weight: bold; font-size: 1.4em; padding: 0 0.2em; line-height: 1em; cursor: pointer; } .clearable-input > input::-ms-clear { display: none; } <p>Always display the 'x':</p> <div class="clearable-input"> <input type="text" /> <span data-clear-input>×</span> </div> <div class="clearable-input"> <input type="text" value="Clear this." /> <span data-clear-input>×</span> </div>
选项2 -只显示'x'当鼠标悬停在字段上时:(示例如下)
Array.prototype.forEach.call(document.querySelectorAll('.clearable-input>[data-clear-input]'), function(el) { el.addEventListener('click', function(e) { e.target.previousElementSibling.value = ''; }); }); .clearable-input { position: relative; display: inline-block; } .clearable-input > input { padding-right: 1.4em; } .clearable-input:hover > [data-clear-input] { display: block; } .clearable-input > [data-clear-input] { display: none; position: absolute; top: 0; right: 0; font-weight: bold; font-size: 1.4em; padding: 0 0.2em; line-height: 1em; cursor: pointer; } .clearable-input > input::-ms-clear { display: none; } <p>Only display the 'x' when hovering over the field:</p> <div class="clearable-input"> <input type="text" /> <span data-clear-input>×</span> </div> <div class="clearable-input"> <input type="text" value="Clear this." /> <span data-clear-input>×</span> </div>
选项3 -如果输入元素有值，只显示'x'(示例如下)
Array.prototype.forEach.call(document.querySelectorAll('.clearable-input'), function(el) { var input = el.querySelector('input'); conditionallyHideClearIcon(); input.addEventListener('input', conditionallyHideClearIcon); el.querySelector('[data-clear-input]').addEventListener('click', function(e) { input.value = ''; conditionallyHideClearIcon(); }); function conditionallyHideClearIcon(e) { var target = (e && e.target) || input; target.nextElementSibling.style.display = target.value ? 'block' : 'none'; } }); .clearable-input { position: relative; display: inline-block; } .clearable-input > input { padding-right: 1.4em; } .clearable-input >[data-clear-input] { display: none; position: absolute; top: 0; right: 0; font-weight: bold; font-size: 1.4em; padding: 0 0.2em; line-height: 1em; cursor: pointer; } .clearable-input > input::-ms-clear { display: none; } <p>Only display the 'x' if the `input` element has a value:</p> <div class="clearable-input"> <input type="text" /> <span data-clear-input>×</span> </div> <div class="clearable-input"> <input type="text" value="Clear this." /> <span data-clear-input>×</span> </div>
我的建议是，如果你不介意仅限于html 5兼容的浏览器，只需使用:
<input type="search" />
JS小提琴演示
不可否认，在Chromium (Ubuntu 11.04)中，这确实要求在明文图像/功能出现之前在输入元素中有文本。
参考:
深入HTML 5:一种疯狂的形式。 输入类型=搜索-搜索字段(新)HTML5。
下面是一个jQuery插件(最后还有一个演示)。
http://jsfiddle.net/e4qhW/3/
我这样做主要是为了说明一个例子(也是一个个人挑战)。虽然点赞很受欢迎，但其他答案都很准时，值得他们应有的认可。
然而，在我看来，这是过度设计的膨胀(除非它成为UI库的一部分)。
在设计模式下将文本框类型更改为'search'或
<input type="search">
