te')); return $arr; } /* 遍历用户所有主题 * @param $uid 用户ID * @param int $page 页数 * @param int $pagesize 每页记录条数 * @param bool $desc 排序方式 TRUE降序 FALSE升序 * @param string $key 返回的数组用那一列的值作为 key * @param array $col 查询哪些列 */ function thread_tid_find_by_uid($uid, $page = 1, $pagesize = 1000, $desc = TRUE, $key = 'tid', $col = array()) { if (empty($uid)) return array(); $orderby = TRUE == $desc ? -1 : 1; $arr = thread_tid__find($cond = array('uid' => $uid), array('tid' => $orderby), $page, $pagesize, $key, $col); return $arr; } // 遍历栏目下tid 支持数组 $fid = array(1,2,3) function thread_tid_find_by_fid($fid, $page = 1, $pagesize = 1000, $desc = TRUE) { if (empty($fid)) return array(); $orderby = TRUE == $desc ? -1 : 1; $arr = thread_tid__find($cond = array('fid' => $fid), array('tid' => $orderby), $page, $pagesize, 'tid', array('tid', 'verify_date')); return $arr; } function thread_tid_delete($tid) { if (empty($tid)) return FALSE; $r = thread_tid__delete(array('tid' => $tid)); return $r; } function thread_tid_count() { $n = thread_tid__count(); return $n; } // 统计用户主题数 大数量下严谨使用非主键统计 function thread_uid_count($uid) { $n = thread_tid__count(array('uid' => $uid)); return $n; } // 统计栏目主题数 大数量下严谨使用非主键统计 function thread_fid_count($fid) { $n = thread_tid__count(array('fid' => $fid)); return $n; } ?>javascript - How to use Markdown with MathJax like Math StackExchange - Stack Overflow

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    javascript - How to use Markdown with MathJax like Math StackExchange - Stack Overflow

    programmeradmin3浏览0评论

    UPDATED POST

    Ok I've managed to make Markdown and MathJax work together, it was relatively simple actually. I've used marked together with MathJax. 

    $(function() {
    var $text       = $("#text"), // the markdown textarea
        $preview    = $("#preview"); // the preview div

    $text.on("keyup", function() {
        $preview.html( marked($text.val()) ); // parse markdown
        MathJax.Hub.Queue(["Typeset", MathJax.Hub, "preview"]); // then let MathJax do its job
    })
});

    Problem now is: I think markdown is parsing my math 1st before MathJax can change it. How do i fix this? I think its fixed on Math StackOverflow, but how? I need to stop markdown from parsing math

    UPDATE 2

    This works, but not sure if its the way math.stackexchange does it, but it seems to produce similar/same results with what I tested so far ... 

    $(function() {
    var $text       = $("#text"),
        $preview    = $("#preview");

    $text.on("keyup", function() {
        $preview.html( $text.val() );
        MathJax.Hub.Queue(["Typeset", MathJax.Hub, "preview"]);
    });

    MathJax.Hub.Register.MessageHook("End Process", function (message) {
        $preview.html( marked($preview.html()) );
    });
});

    OLD POST BELOW

    In the math stackexchange, I can use MathJax with Markdown. I wonder what do I need to do that? I can use a library like marked to render Markdown, but for MathJax, it seems like it just renders on page loads. How can I call it to re-render or better just render whats needed (specified by me)

    html = marked("some markdown string") // a HTML string
// is there something like
html = MathJax.parse(html)

    UPDATE

    I think I should be looking at .1/typeset.html#manipulating-individual-math-elements. But when I try 

    $text.on("keyup", function() {
    $preview.html( marked($text.val()) );
    var math = MathJax.Hub.getAllJax("preview");
    console.log(math);
    MathJax.Hub.Queue(["Text", math, "a+b"]);
})

    Where:

    • $text: is the jQuery element for my textarea
    • $preview: is the preview div

    I find that math is undefined, so it seems var math = MathJax.Hub.getAllJax("preview") is not working. I have a div#preview btw.

    UPDATED POST

    Ok I've managed to make Markdown and MathJax work together, it was relatively simple actually. I've used marked together with MathJax. 

    $(function() {
    var $text       = $("#text"), // the markdown textarea
        $preview    = $("#preview"); // the preview div

    $text.on("keyup", function() {
        $preview.html( marked($text.val()) ); // parse markdown
        MathJax.Hub.Queue(["Typeset", MathJax.Hub, "preview"]); // then let MathJax do its job
    })
});

    Problem now is: I think markdown is parsing my math 1st before MathJax can change it. How do i fix this? I think its fixed on Math StackOverflow, but how? I need to stop markdown from parsing math

    UPDATE 2

    This works, but not sure if its the way math.stackexchange does it, but it seems to produce similar/same results with what I tested so far ... 

    $(function() {
    var $text       = $("#text"),
        $preview    = $("#preview");

    $text.on("keyup", function() {
        $preview.html( $text.val() );
        MathJax.Hub.Queue(["Typeset", MathJax.Hub, "preview"]);
    });

    MathJax.Hub.Register.MessageHook("End Process", function (message) {
        $preview.html( marked($preview.html()) );
    });
});

    OLD POST BELOW

    In the math stackexchange, I can use MathJax with Markdown. I wonder what do I need to do that? I can use a library like marked to render Markdown, but for MathJax, it seems like it just renders on page loads. How can I call it to re-render or better just render whats needed (specified by me)

    html = marked("some markdown string") // a HTML string
// is there something like
html = MathJax.parse(html)

    UPDATE

    I think I should be looking at http://www.mathjax/docs/1.1/typeset.html#manipulating-individual-math-elements. But when I try 

    $text.on("keyup", function() {
    $preview.html( marked($text.val()) );
    var math = MathJax.Hub.getAllJax("preview");
    console.log(math);
    MathJax.Hub.Queue(["Text", math, "a+b"]);
})

    Where:

    • $text: is the jQuery element for my textarea
    • $preview: is the preview div

    I find that math is undefined, so it seems var math = MathJax.Hub.getAllJax("preview") is not working. I have a div#preview btw.

    • javascript
    • markdown
    • mathjax
    Share Improve this question edited Aug 24, 2012 at 14:23 Jiew Meng asked Aug 22, 2012 at 9:01 Jiew MengJiew Meng 88.3k192 gold badges523 silver badges832 bronze badges 2
    • Doing MathJax before markdown is clever (markdown passes html through) but means that math will be rendered everywhere. For example it's unclear that you want it rendered in literal text. – Beni Cherniavsky-Paskin Commented Mar 10, 2014 at 8:45
    • Does this answer your question? let PageDown and MathJax work together – TylerH Commented Oct 8, 2020 at 14:29
    Add a ment  | 

    2 Answers 2

    Reset to default 5 +50

    The fastest way is to protect the math from your markdown-parser.

    See this question for a detailed answer by Davide Cervone, including a link to the code used by math.SE.

    For sublime, add the following code to Markdown Preview --> Settings - User,

    {
    /*
        Enable or not mathjax support.
    */
    "enable_mathjax": true
}

    as shown below,

    Refer to How to enable MathJax rendering in Sublimetext Markdown Preview.

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