javascript - 关于一段代码

Question

我想理解这段代码，因为我是初学者。主要是这些红色字体。他们正在获取哪个页面值？

$(function() {
        $("#title").blur(function() { QuestionSuggestions(); });    
});

function QuestionSuggestions() {
    var s = $("#title").val();            
    if (s.length > 2 && !($("#title").hasClass('edit-field-overlayed'))) {
         document.title = s + " - Stack Overflow";
         $("#question-suggestions").load("/search/titles?like=" + escape(s));
    }
}

Answer 1

function QuestionSuggestions() {
        var s = $("#title").val(); // Here we take the value of element with ID "title"   
        // If the length of the title is bigger than 2 or 
        // the element doesn't have 'edit-field-overlayed' class      
        if (s.length > 2 && !($("#title").hasClass('edit-field-overlayed'))) {
            // we set the title of the document as <title>[our old title] - Stack Overflow</title>
            document.title = s + " - Stack Overflow";

            // Load data from the server and place the returned HTML into the matched element.
            $("#question-suggestions").load("/search/titles?like=" + escape(s));
        }
    }

如果 id title 的元素的标题长度超过 2，假设“我的标题”并且没有类“edit-field-overlayed”，我们将页面标题更改为“我的标题 - Stack Overflow”并加载 html/通过查询 URL http://yoursite.tld/search/titles?like=My%20title 元素“#question-suggestions”中的文本