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PATH只能是一個(gè)目錄，不能是可執(zhí)行文件。把你PATH里面最后的node去掉就可以了

watch你值得擁有

一個(gè)armeabi就夠了

看出來(lái)的,樓主是完美主義者

像樓上說(shuō)的，應(yīng)該是websocket，這個(gè)代碼不同語(yǔ)言的代碼是不一樣的，你只需要了解websocket是什么，怎么用就行了，直接去百度吧。

線上只能通過(guò) Nginx 或 Apache 配置代理了。讓服務(wù)端修改下吧。修改方案是一樣的。

cell中的內(nèi)容做成寬度自適應(yīng)的。外部cell的寬度變了，瀏覽器會(huì)重繪，里面的元素也會(huì)重繪。內(nèi)部元素的寬度設(shè)定為百分比，讓其可自動(dòng)伸縮。

參考pdf.js的實(shí)現(xiàn)吧。

兩種方法任選其一
1：把#btn{line-height:55px;}去掉，讓#icon 里的line-height去撐開它的父元素;
2：把#icon {display: inline-block}改為icon {display:block};

$('.hideShow:eq(0)').prevAll().css('background', 'red')

應(yīng)該是你對(duì)數(shù)據(jù)修改后導(dǎo)致了整個(gè)數(shù)組UI的重繪。
vue2中有對(duì)應(yīng)的解決方案vue文檔
簡(jiǎn)單來(lái)說(shuō)，v-for循環(huán)時(shí)，每個(gè)綁定一個(gè)不相同的key值，數(shù)據(jù)發(fā)生變化時(shí)，就會(huì)只重繪對(duì)應(yīng)key的UI，減少性能損耗，也就不會(huì)出現(xiàn)lz的閃一下的問(wèn)題。
如果對(duì)于這個(gè)地方還有什么疑惑，可以看一下這個(gè)鏈接，做實(shí)驗(yàn)有助于理解。

這個(gè)錯(cuò)誤的原因有很多種，能提供一下詳細(xì)的代碼片段嗎？

使用vue，就不會(huì)出現(xiàn)頻繁操作dom的情況。

找到相關(guān)的源碼了，雖然看不懂：

static PyObject *
gen_send_ex(PyGenObject *gen, PyObject *arg, int exc, int closing)
{
    PyThreadState *tstate = PyThreadState_GET();
    PyFrameObject *f = gen->gi_frame;
    PyObject *result;

    if (gen->gi_running) {
        const char *msg = "generator already executing";
        if (PyCoro_CheckExact(gen)) {
            msg = "coroutine already executing";
        }
        else if (PyAsyncGen_CheckExact(gen)) {
            msg = "async generator already executing";
        }
        PyErr_SetString(PyExc_ValueError, msg);
        return NULL;
    }
    if (f == NULL || f->f_stacktop == NULL) {
        if (PyCoro_CheckExact(gen) && !closing) {
            /* `gen` is an exhausted coroutine: raise an error,
               except when called from gen_close(), which should
               always be a silent method. */
            PyErr_SetString(
                PyExc_RuntimeError,
                "cannot reuse already awaited coroutine");
        }
        else if (arg && !exc) {
            /* `gen` is an exhausted generator:
               only set exception if called from send(). */
            if (PyAsyncGen_CheckExact(gen)) {
                PyErr_SetNone(PyExc_StopAsyncIteration);
            }
            else {
                PyErr_SetNone(PyExc_StopIteration);
            }
        }
        return NULL;
    }

    if (f->f_lasti == -1) {
        if (arg && arg != Py_None) {
            const char *msg = "can't send non-None value to a "
                              "just-started generator";
            if (PyCoro_CheckExact(gen)) {
                msg = NON_INIT_CORO_MSG;
            }
            else if (PyAsyncGen_CheckExact(gen)) {
                msg = "can't send non-None value to a "
                      "just-started async generator";
            }
            PyErr_SetString(PyExc_TypeError, msg);
            return NULL;
        }
    } else {
        /* Push arg onto the frame's value stack */
        result = arg ? arg : Py_None;
        Py_INCREF(result);
        *(f->f_stacktop++) = result;
    }

    /* Generators always return to their most recent caller, not
     * necessarily their creator. */
    Py_XINCREF(tstate->frame);
    assert(f->f_back == NULL);
    f->f_back = tstate->frame;

    gen->gi_running = 1;
    gen->gi_exc_state.previous_item = tstate->exc_info;
    tstate->exc_info = &gen->gi_exc_state;
    result = PyEval_EvalFrameEx(f, exc);
    tstate->exc_info = gen->gi_exc_state.previous_item;
    gen->gi_exc_state.previous_item = NULL;
    gen->gi_running = 0;

    /* Don't keep the reference to f_back any longer than necessary.  It
     * may keep a chain of frames alive or it could create a reference
     * cycle. */
    assert(f->f_back == tstate->frame);
    Py_CLEAR(f->f_back);

    /* If the generator just returned (as opposed to yielding), signal
     * that the generator is exhausted. */
    if (result && f->f_stacktop == NULL) {
        if (result == Py_None) {
            /* Delay exception instantiation if we can */
            if (PyAsyncGen_CheckExact(gen)) {
                PyErr_SetNone(PyExc_StopAsyncIteration);
            }
            else {
                PyErr_SetNone(PyExc_StopIteration);
            }
        }
        else {
            /* Async generators cannot return anything but None */
            assert(!PyAsyncGen_CheckExact(gen));
            _PyGen_SetStopIterationValue(result);
        }
        Py_CLEAR(result);
    }
    else if (!result && PyErr_ExceptionMatches(PyExc_StopIteration)) {
        const char *msg = "generator raised StopIteration";
        if (PyCoro_CheckExact(gen)) {
            msg = "coroutine raised StopIteration";
        }
        else if PyAsyncGen_CheckExact(gen) {
            msg = "async generator raised StopIteration";
        }
        _PyErr_FormatFromCause(PyExc_RuntimeError, "%s", msg);

    }
    else if (!result && PyAsyncGen_CheckExact(gen) &&
             PyErr_ExceptionMatches(PyExc_StopAsyncIteration))
    {
        /* code in `gen` raised a StopAsyncIteration error:
           raise a RuntimeError.
        */
        const char *msg = "async generator raised StopAsyncIteration";
        _PyErr_FormatFromCause(PyExc_RuntimeError, "%s", msg);
    }

    if (!result || f->f_stacktop == NULL) {
        /* generator can't be rerun, so release the frame */
        /* first clean reference cycle through stored exception traceback */
        exc_state_clear(&gen->gi_exc_state);
        gen->gi_frame->f_gen = NULL;
        gen->gi_frame = NULL;
        Py_DECREF(f);
    }

    return result;
}

命名問(wèn)題，APPHeader在模板中得寫為<app-header></app-header>, Appmain寫為<appmain></appmain>。另外注意sass依賴包是否正確安裝

div模擬吧，你用火狐調(diào)試，alert都不生效了。
而且alert、confrim在各種瀏覽器下樣式不一，還是模擬的好。

http://apizza.cc/?f=chromeapp

網(wǎng)上找到的代碼，可以參考這里：

如果then()方法中返回了一個(gè)參數(shù)值，那么返回的Promise將會(huì)變成接收狀態(tài)。
如果then()方法中拋出了一個(gè)異常，那么返回的Promise將會(huì)變成拒絕狀態(tài)。
如果then()方法調(diào)用resolve()方法，那么返回的Promise將會(huì)變成接收狀態(tài)。
如果then()方法調(diào)用reject()方法，那么返回的Promise將會(huì)變成拒絕狀態(tài)。
如果then()方法返回了一個(gè)未知狀態(tài)(pending)的Promise新實(shí)例，那么返回的新Promise就是未知狀態(tài)。
如果then()方法沒(méi)有明確指定的resolve(data)/reject(data)/return data時(shí)，那么返回的新Promise就是接收狀態(tài)，可以一層一層地往下傳遞。

參考文章
https://segmentfault.com/a/11...

可以把文件名當(dāng)作一個(gè)字段 存在附件表中,
時(shí)間戳作+后綴名為文件名保存在服務(wù)器