table').getElementsByTagName('tr'); 6. 7. // 先定位ID为'test-div'的节点，再返回其内部所有class包含red的节点： 8. var reds = document.getElementById('test-div').getElementsByClassName('red'); 9. 10. // 获取节点test下的所有直属子节点: querySelector('#q1'); 3. 4. // 通过querySelectorAll获取q1节点内的符合条件的所有节点： 5. var ps = q1.querySelectorAll('div.highlighted > p'); 注意：低版本的IE<8不支持 querySelector 和 querySelectorAll 。IE8仅有限支持。 严格地讲，我们这里的DOM节点是指 Scheme Haskell 1. 2. <div id="test-div"> 3. <div class="c-red"> 4.

JavaScript

5.

Java

6. div> 7. <div class="c-red c-green"> 8.

Python

poll.id %}" method="post"> {% csrf_token %} <div class="form-group"> {% for choice in instance.poll.choice_set.all %} <div class="radio"> {{ choice.choice_text }} div> {% endfor %} div> 4.2. Test the plugin Now you can render_model instance "name" "changelist" %} Will render to: <div class="cms-plugin cms-plugin-myapp-mymodel-changelist-1"> My Model Instance Name div> Filters If you need to apply filters to the output

poll.id %}" method="post"> {% csrf_token %} <div class="form-group"> {% for choice in instance.poll.choice_set.all %} <div class="radio"> {{ choice.choice_text }} div> {% endfor %} div> 4.2. Test the plugin Now you can render_model instance "name" "changelist" %} Will render to: <div class="cms-plugin cms-plugin-myapp-mymodel-changelist-1"> My Model Instance Name div> Filters If you need to apply filters to the output

'polls:vote' instance.poll.id %}" method="post"> {% csrf_token %} <div class="form-group"> {% for choice in instance.poll.choice_set.all %} <div class="radio"> {{ choice.choice_text }} div> {% endfor %} div> Test the plugin Now you can restart the runserver (required because you added render_model instance "name" "changelist" %} Will render to: <div class="cms-plugin cms-plugin-myapp-mymodel-changelist-1"> My Model Instance Name div> Filters If you need to apply filters to the output value

Documentation, Release 3.10.0 (continued from previous page) <div class="form-group"> {% for choice in instance.poll.choice_set.all %} <div class="radio"> {{ choice.choice_text }} div> {% endfor %} div> Test the plugin Now you can restart the runserver (required because you added render_model instance "name" "changelist" %} Will render to: <div class="cms-plugin cms-plugin-myapp-mymodel-changelist-1"> My Model Instance Name div> Filters If you need to apply filters to the output value

this might break the output. For ex- ample, if your processor wraps the output in a div tag, you might end up having div tags inside of p tags, which is invalid. You can prevent such cases by returning rendered_content import Context, Template # For simplicity's sake, construct the template from a string: t = Template('<div style="border: 10px {{ border_color }} solid; background: {{ background # Prepare that template's context: cms_tags %} <div class="plugin parent"> {% for plugin in instance.child_plugin_instances %} {% render_plugin plugin %} {% endfor %} div> child.html: <div class="plugin child"> {{ instance }} div> Extending

其可视化形式： 1.5.5. 匹配 id 要求从 <div id="container" class="main">div> 提取出 id="container"。 可能最开始想到的正则是： var regex = /id=".*"/ var string = '<div id="container" class="main">div>'; console.log(string.match(regex)[0]); 停下来，会继续匹配，直到遇到最后一个双引号为止。 解决之道，可以使用惰性匹配： var regex = /id=".*?"/ var string = '<div id="container" class="main">div>'; console.log(string.match(regex)[0]); // => id="container" 当然，这样也会有个问题。效率比较低，因 “回溯”这个概念（这里也只是顺便提一 下，第四章会详细说明）。可以优化如下： var regex = /id="[^"]*"/ var string = '<div id="container" class="main">div>'; console.log(string.match(regex)[0]); // => id="container" 1.6. 本章小结 掌握字符组和量词

其可视化形式： 1.5.5. 匹配 id 要求从 <div id="container" class="main">div> 提取出 id="container"。 可能最开始想到的正则是： var regex = /id=".*"/ var string = '<div id="container" class="main">div>'; console.log(string.match(regex)[0]); 停下来，会继续匹配，直到遇到最后一个双引号为止。 解决之道，可以使用惰性匹配： var regex = /id=".*?"/ var string = '<div id="container" class="main">div>'; console.log(string.match(regex)[0]); // => id="container" 当然，这样也会有个问题。效率比较低，因 “回溯”这个概念（这里也只是顺便提一 下，第四章会详细说明）。可以优化如下： var regex = /id="[^"]*"/ var string = '<div id="container" class="main">div>'; console.log(string.match(regex)[0]); // => id="container" 1.6. 本章小结 掌握字符组和量词

poll.id %}" method="post"> {% csrf_token %} <div class="form-group"> {% for choice in instance.poll.choice_set.all %} <div class="radio"> {{ choice.choice_text }} div> {% endfor %} div> Apphooks Right now, our Django %} {% render_model instance "name" "changelist" %} <div class="cms-plugin cms-plugin-myapp-mymodel-changelist-1"> My Model Instance Name div> {% load cms_tags %} {% block content %}

{% render_model

poll.id %}" method="post"> {% csrf_token %} <div class="form-group"> {% for choice in instance.poll.choice_set.all %} <div class="radio"> {{ choice.choice_text }} div> {% endfor %} div> Apphooks Right now, our Django %} {% render_model instance "name" "changelist" %} <div class="cms-plugin cms-plugin-myapp-mymodel-changelist-1"> My Model Instance Name div> {% load cms_tags %} {% block content %}

{% render_model