trpl-zh-cn/docs/book.js

$( document ).ready(function() {

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    if (theme === null) { theme = 'light'; }

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    // Syntax highlighting Configuration
    hljs.configure({
        tabReplace: '    ', // 4 spaces
        languages: [],      // Languages used for auto-detection
    });

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    var content = $("#content");


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            var popup = $('<div class="theme-popup"></div>')
                .append($('<div class="theme" id="light">Light <span class="default">(default)</span><div>'))
                .append($('<div class="theme" id="rust">Rust</div>'))
                .append($('<div class="theme" id="coal">Coal</div>'))
                .append($('<div class="theme" id="navy">Navy</div>'));


            popup.insertAfter(this);

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    });

    function set_theme(theme) {
        if (theme == 'coal' || theme == 'navy') {
            $("[href='tomorrow-night.css']").prop('disabled', false);
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            $("[href='highlight.css']").prop('disabled', false);
        }

        localStorage.setItem('theme', theme);

        $('body').removeClass().addClass(theme);
    }


    // Hide Rust code lines prepended with a specific character
    var hiding_character = "#";

    $("code.language-rust").each(function(i, block){

        var code_block = $(this);
        var pre_block = $(this).parent();
        // hide lines
        var lines = code_block.html().split("\n");
        var first_non_hidden_line = false;
        var lines_hidden = false;

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                }
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                    lines[n] = "<span class=\"hidden\">" + lines[n].replace(/(\s*)#/, "$1") + "\n"  +  "</span>";
                }
                lines_hidden = true;
            }
            else if(first_non_hidden_line) {
                lines[n] = "\n" + lines[n];
            }
            else {
                first_non_hidden_line = true;
            }
        }
        code_block.html(lines.join(""));

        // If no lines were hidden, return
        if(!lines_hidden) { return; }

        // add expand button
        pre_block.prepend("<div class=\"buttons\"><i class=\"fa fa-expand\"></i></div>");

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                pre_block.find("span.unhidden").removeClass("unhidden").addClass("hidden");
            }
        });
    });


    // Process playpen code blocks
    $(".playpen").each(function(block){
        var pre_block = $(this);
        // Add play button
        var buttons = pre_block.find(".buttons");
        if( buttons.length === 0 ) {
            pre_block.prepend("<div class=\"buttons\"></div>");
            buttons = pre_block.find(".buttons");
        }
        buttons.prepend("<i class=\"fa fa-play play-button\"></i>");

        buttons.find(".play-button").click(function(e){
            run_rust_code(pre_block);
        });
    });


});


function run_rust_code(code_block) {
    var result_block = code_block.find(".result");
    if(result_block.length === 0) {
        code_block.append("<code class=\"result hljs language-bash\"></code>");
        result_block = code_block.find(".result");
    }

    result_block.text("Running...");

    $.ajax({
        url: "https://play.rust-lang.org/evaluate.json",
        method: "POST",
        crossDomain: true,
        dataType: "json",
        contentType: "application/json",
        data: JSON.stringify({version: "stable", optimize: "0", code: code_block.find(".language-rust").text() }),
        success: function(response){
            result_block.text(response.result);
        }
    });
}