我如何在这里使用jQuery解析XML [英] How do I use jQuery to parse XML as I have here

问题描述

此(或它的某些变体)由我的PHP脚本输出.请注意，某些标记在不同的上下文中使用相同的名称:

This (or some variation of it) is output by my PHP script Notice that some tags use the same name in different contexts:

<conversations>
  <status>1</status>
  <conversation>
    <open>0</open>
    <status>1</status>
    <priority>1</priority>
  </conversation>
  <conversation>
    <open>1</open>
    <status>0</status>
    <priority>0</priority>
  </conversation>
</conversations>

<messages>
  <status>1</status>
  <message>
    <msgID>165</msgID>
    <userID>16></userID>
    <msg>How do I parse this?</msg>
  </message>
</messages>

首先，我需要遍历并为每个对话显示一个按钮.然后，我需要遍历并显示所选对话的所有新消息.我可以自己弄清楚逻辑.我只是不知道如何解析(爬升)XML.感谢您的帮助！

First, I need to loop through and display a button for each conversation. Then I need to loop through and display all the new messages for the selected conversation. I can figure the logic out on my own. I just don't know how to parse (climb around) the XML. Thanks for your help!

如果我说$("status"，xml).text()，我怎么知道哪个<状态>标签是否被引用?我需要区分<对话>和<消息>.

If I say $("status",xml).text() how do I know which < status > tag is being referenced? I need to distinguish between < conversations > and < messages >.

推荐答案

• .filter()筛选顶级节点
• .children()，带有一个可选的选择器，以获取顶层的直接子集
• .find()和一个选择器，以获取当前顶层节点以下任何级别的一组节点
• .each()遍历当前顶层的那些
• .filter() to filter through nodes at the top level,
• .children() with an optional selector to get a set of immediate children of those at the top level
• .find() with a selector to get a set of nodes at any level beneath those at the current top level
• .each() to iterate over those at the current top level

示例: http://jsfiddle.net/MTPdw/1/

var $xml = $(xml);

var conversations = $xml.filter('conversations');

conversations.children('conversation').each(function() {
    alert($(this).find('status').text());
});

在做的时候:

$("status",xml).text()

...它被转换为此:

...it gets converted into this:

$(xml).find("status").text();

由于顶层的节点是<conversations>和<messages>，因此它将搜索作为这两个元素的后代的所有<status>元素. .text()然后返回其累积的文本内容.

Because the nodes at the top level are <conversations> and <messages>, it is searching for all <status> elements that are descendants of either of those. The .text() then returned their cumulative text content.

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