在给定html字符串和给定宽度的情况下，如何实现一个高效的wordwrap方法？
如

var html = `<div>
                <span>The </span><span style="font-size: 24px;">word-break</span><span> CSS property specifies whether or not the browser should insert line breaks wherever the text would otherwise overflow its content box.</span>
            </div>`;
var width = 624;
var result = wordwarp(html, width);
console.log(result);
/* 
<div>
    <span>The </span><span style="font-size: 24px;">word-break</span><span> CSS property specifies whether or not the browser should </span>
</div>
<div>
    <span>insert line breaks wherever the text would otherwise overflow its content box.</span>
</div>
*/