// ✅ Remove disabled attribute from button btn.removeAttribute('disabled'); // ✅ Add disabled attribute to button // btn.setAttribute('disabled', ''); 1. 2. 3. 4. 5. 6. 7. 我们选择了button使用document.getElementById()方法。 然后我们使用removeAttribute方法从元素中删除disabled属性。 ...
Loading text should be defined on the button element using the data attribute data-loading-text. <button type="button" class="btn" data-loading-text="loading stuff..." >...</button> Heads up! Firefox persists the disabled state across page loads. A workaround for this is to use ...
Note: The data-toggle="dropdown" attribute is relied on for closing dropdown menus at an application level, so it's a good idea to always use it. Via data attributes Add data-toggle="dropdown" to a link or button to toggle a dropdown. <div class="dropdown"> <button id="dLabel"...
We also believe you should be able to use all Bootstrap plugins purely through the JavaScript API. All public APIs are single, chainable methods, and return the collection acted upon. $('.btn.danger').button('toggle').addClass('fat') All methods should accept an optional options object, ...
Note: The data-toggle="dropdown" attribute is relied on for closing dropdown menus at an application level, so it's a good idea to always use it. Via data attributes Add data-toggle="dropdown" to a link or button to toggle a dropdown. <div class="dropdown"> <button id="dLabel"...
To accomplish this, use a wrapping element. 编程方式的 API 我们为所有 Bootstrap 插件提供了纯 JavaScript 方式的 API。所有公开的 API 都是支持单独或链式调用方式,并且返回其所操作的元素集合(注:和jQuery的调用形式一致)。 Copy $('.btn.danger').button('toggle').addClass('fat') 所有方法都可以接受...
Note: The data-toggle="dropdown" attribute is relied on for closing dropdown menus at an application level, so it's a good idea to always use it. Via data attributes Add data-toggle="dropdown" to a link or button to toggle a dropdown. Copy <div class="dropdown"> <button id="dLa...
(通过属性selected来判断),需要确定使用什么值,如果不存在value特性,或者虽然存在该特性,但是值为空字符串,都是使用选项的文本来代替,为检查这个特性,在兼容DOM的浏览器下我们需要使用hasAttribute()方法,而在IE中需要使用特性的specified属性;对于type=“file”或者submit,reset,button等就不支持,如果比如上传图片的...
这里的函数 addTen()有一个参数 num,而参数实际上是函数的局部变量。在调用这个函数时,变量 count 作为参数被传递给函数,这个变量的值是 20。于是,数值 20 被复制给参数 num 以便在 addTen()中使用。在函数内部,参数 num 的值被加上了 10,但这一变化不会影响函数外部的 count 变量。参数num 与变量 count...
We also believe you should be able to use all Bootstrap plugins purely through the JavaScript API. All public APIs are single, chainable methods, and return the collection acted upon. $(".btn.danger").button("toggle").addClass("fat") ...