Question

在开发Jade模板库时，最好使用mixin的块作为属性值，从而简化最终用户的语法。

最终用户可以选择3种创建按钮的方法;通过标签，按钮标签和输入标签。对于输入标记，我想使用块作为值属性，因此语法始终为：

+abtn
    | A Button
+btn
    | Button
+ibtn
    | I Button
+abtn(disabled)
    | A Button Disabled
+btn(disabled)
    | Button Disabled
+ibtn(disabled)
    | I Button Disabled

目前，mixins的精简版看起来像：

mixin abtn
    - attributes.href = attributes.href || '#'
    - attributes.role = attributes.role || 'button'
    - if (attributes.disabled) {
    -     attributes.class = (attributes.class === undefined) ? 'disabled' : attributes.class + ' disabled';
    -     attributes.disabled = null
    - }
    a.btn(attributes)
        block

mixin btn
    - attributes.type = attributes.type || 'button'
    button.btn(attributes)
        block

mixin ibtn
    - attributes.class = (attributes.class === undefined) ? 'btn' : attributes.class + ' btn';
    - attributes.type = attributes.type || 'button'
    input(attributes=attributes)

麻烦是指定ibtn的value属性要求最终用户语法为：

+abtn
    | A Button
+btn
    | Button
+ibtn(value='I Button')
+abtn(disabled)
    | A Button Disabled
+btn(disabled)
    | Button Disabled
+ibtn(value='I Button Disabled', disabled)

哪个不一致。

是否可以通过内置的javascript访问块，以便可以在属性中使用其内容的非空白版本？如果是这样的话？

修改

为了澄清，我想要以下玉代码：

+ibtn
      | My button value

输出：

<input value="My button value">

Answer 1

Well, it's a syntax problem. When you run a mixin, becomes in this way, since the parentheses you can give arguments. That is so:

mixin myMixin (arg1, arg2)
   p=arg1
   p=arg2
+myMixin('Jade is Cool', 'Yeahh!')

is rendered into...

<p>Jade is Cool</p>
<p>Yeahh!</p>

In this case you want to spend attributes, it becomes as follows:

mixin myMixin (arg1, arg2)
    p( id=attributes.id )=arg1
    p( class=attributes.class, value=attributes.value )=arg2
+myMixin('Jade is Cool', 'Yeahh!').myClass#MyId( value="Kool" )

which is rendered as ...

<p id="MyId">Jade is Cool</p>
<p class="myClass" value="Kool">Yeahh!</p>

Note standing twice parentheses, the first makes the mixin leading arguments and run second are attributes mixin. Where applicable:

+abtn()
    | A Button
+btn()
    | Button
+ibtn()(value='I Button')
+abtn()(disabled)
    | A Button Disabled
+btn()(disabled)
    | Button Disabled
+ibtn()(value='I Button Disabled', disabled)

Remember that mixins are functions in javascript.

使用Jade mixin块作为属性

1 个答案: