How to use node front-end template engine Jade tag
This time I will show you how to use the node front-endtemplate engineJade tag, and use nodefront-end templateengine Jade tagWhat are the precautionsWhat are the following? This is a practical case, let’s take a look at it.
1. Document declaration
#When we start writing an html page, we must first write the DOCTYPE document declaration. Now it is usually the case Next we all use the HTML5 document declaration method, so how should we write it in jade?
There are two ways to write document declarations in jade:
We can write doctype html directly in the jade file
-
jade provides us with a simple writing method, (but it seems that jade does not recommend this method in the new version after the upgrade -_-||| )
Of course , jade also supports other types of document declarations by default, just use doctype to follow the following options. By default, jade supports:
var doctypes = exports.doctypes = {
'5': '<!DOCTYPE html>',
'xml': '<?xml version="1.0" encoding="utf-8" ?>',
'default': '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">',
'transitional': '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">',
'strict': '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">',
'frameset': '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">',
'1.1': '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">',
'basic': '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML Basic 1.1//EN" "http://www.w3.org/TR/xhtml-basic/xhtml-basic11.dtd">',
'mobile': '<!DOCTYPE html PUBLIC "-//WAPFORUM//DTD XHTML Mobile 1.2//EN" "http://www.openmobilealliance.org/tech/DTD/xhtml-mobile12.dtd">'
};doctype is not case-sensitive, so the following two have the same effect:
doctype Default doctype default
For example: if we want to write an XHTML 1.0 Strict document declaration , you can write like this:
doctype strict
The compilation result is as follows:
Copy code The code is as follows:
##2、 Tag
The tag in jade is written very simply, it is just one word.doctype html html head title body
<!DOCTYPE html> <html> <head> <title></title> </head> <body></body> </html>
h1 this is a title. p this is a paragraph.
Sometimes, we will need to output some text in a special format or to improve the readability of the code, we need to display the following effect:this is a title.
this is a paragraph.
< ;p>Then what we should do in jade How to write it? Here jade provides us with two methods. The first is to add a | and a space in front of each line:1. 001
2. 002
3. 003
4. 004
p | 1. 001 | 2. 002 | 3. 003 | 4. 004
p. 1. 001 2. 002 3. 003 4. 004
p | 1. 001 strong aaa | 2. 002 | 3. 003 | 4. 004
p. 1. 001 <strong>aaa</strong> 2. 002 3. 003 4. 004
1. 001
aaa
2. 002
3. 003
4. 004
##3. Tag’s attribute and attribute value##h1 p and other tags, we usually write id & class attributes for them, so how should this be written in jade? The same syntax as zen coding, we only need to write like this:
h1#id.class this is a title. p#j-text.text this is a paragraph.
this is a title.
this is a paragraph.
等等，那我要是想添加多个 class 怎么办呢？这样办：
h1#id.class1.class2.class3 this is a title. p#j-text.text this is a paragraph.
编译结果为：
this is a title.
this is a paragraph.
什么？写 p 写烦了？那就不写咯。
#id.class #id.class1.class2 this is a p without tags.
编译结果为：
this is a p without tags.
这里要说明一下，在 jade 的语法里面，只有 p 标签能够省略不写.
说完了 id 和 class，我们再来说一下标签其他的属性应该怎么添加。jade 里添加其他属性和值的语法也和 zen coding 类似，我们需要在标签后面加上小括号()，然后按照(属性名=属性值)的格式写就好了，如果有多个属性，中间以逗号进行分割。
比如上面的 id 和 class 的写法我们就可以改写成：
h1(id="id", class="class") this is a title. p(id="j-text", class="text") this is a paragraph.
结果是一样的：
this is a title.
this is a paragraph.
说来说去还是这两个属性，烦了？那我们换一个吧：
a(herf="/index.html", title="this is a link.", target="_blank", data-uid="1000") index.html
编译结果为：
那么问题就来了，如果我们要写一个单属性应该怎么写？比如给表单元素添加 checked属性：
input(type="checkbox", name="all", checked, value="全选")
编译结果为：
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