如何基于JavaScript整理HTML代码

Question

I am writing a JavaScript function which can tidy up HTML code (JavaScript and CSS code tidying is not necessary at the moment).

Here is my code. And check it on http://jsfiddle.net/2q26K/

function tidyHtml(html) {
    var html = html.trim().replace(/>[^<]+</gm, function ($1) {
        return '>' + $1.substr(1, $1.length - 2).trim() + '<';
    }).replace(/>\s+</gm, '><');
    var containerElement = document.createElement('div');
    containerElement.innerHTML = html;
    var result = containerElement.innerHTML;
    var findLevel = function (child, parent) {
        var level = 0;
        while (child != parent) {
            child = child.parentNode;
            level++;
        }
        return level;
    }
    Array.prototype.slice.call(containerElement.getElementsByTagName('*')).forEach(function (element) {
        var tabs = new Array(findLevel(element, containerElement) - 1).join('   '),
            tabs2 = (element.parentNode.lastChild == element) ? ('\n' + tabs.substring(0, tabs.length - 1)) : '',
            containerElement = document.createElement('div');
        containerElement.appendChild(element.cloneNode(true));
        result = result.replace(containerElement.innerHTML, '\n' + tabs + containerElement.innerHTML + tabs2);
    });
    return result;
}

In the example provided, it works perfectly.

But, sometimes when HTML code is like that: http://jsfiddle.net/2q26K/1/

It refuses to change

<div id="hlogo">
    <a href="/">Stack Overflow</a>ABC</div>

To

<div id="hlogo">
    <a href="/">Stack Overflow</a>ABC
</div>

I cannot solve it. It's too complicated. Is there an easier method that can do the same thing?

How can I improve my code? What would be an example that I can learn from?

Answer 1

您可以使用此我发现它在11346108

Answer 2

如果速度不是问题，您可以使用此处解释的 $(String).html() 方法在生成的 HTML 字符串上运行 jQuery 解析器（或者Cheerio和Node.js ）。