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初步找到原因，因為先裝的laragon，并且安裝的時候勾選了auto virtual hosts,所以創(chuàng)建的所有{name}.dev域名，在chrome下都被強制轉到https，而IE下則是直接訪問http沒問題。暫時的解決辦法是，停止自建虛擬主機，手動添加。

問題已解決，https://forum.laragon.org/top...

進入一個新的編輯頁面時，可以隨機生成一個token值，比如 /article/{token}, 存草稿時 {token: 草稿}，頁面刷新時，token不變；

進入新的頁面時，token變化，這時候localStorage 判斷token是否相同，不同則不用處理

js沒有權限操作文件系統(tǒng)，你可以用node.js的fs.writeFile()來實現

先在 getConsoleFeedStyle 里面debug看看運行了沒，在看看 a,b,c的key是否是正確的樣式

看你提示，value不是字串。。。

通常造成這種錯誤的原因是應該成雙的符號輸入錯誤，比如說“”，‘’，{}，[]。
如果你出現這種錯誤，你就要找你的代碼中是不是以上結構有開始，但沒有結束，重點查找你的js代碼。
你一個一個對比總能找到你的錯誤。如果沒有發(fā)現，你就要想想，是不是你的代碼中有轉義字符，并且這些轉義字符你沒有處理正確。

路由怎么定義的

ERROR in ./src/components/home/home.vue

Cannot read property 'context' of undefined

是不是 home.vue 中 用了個 x.context 然后 x 是 undefined

兄弟，這個問題解決了嗎？我最近也在做這個，做出來了可不可以分享下

new is not an operator!

In c++, new and operator are both keywords. new int(x) is a(n) (new-)expression. operator new is a function. new operator in your title is new-expression indeed. new-expression will invoke oeprator new function.

placement new的作用就是在operator new分配好的內存上執(zhí)行對象的構造，
Yes, that's true. To help you understand, here is a sample:

char* ptr = new char[sizeof(T)]; // ptr use a new-expression(newchar [sizeof(T)] to allocate memory, char is guaranteed to be sizeof 1
T* tptr = new(ptr) T;            // Here is placement new

In a nutshell, placement new will use already allocated memory to construct the object. Where is the already allocated memory from? Either from new expression(free store) or allocated from activation record like int buffer[10], both ok.

那么new operator使用了operator new來申請內存之后是使用了placement new嗎？如果沒有話是怎么構造的呢？和placement new有關系嗎？

Above is my answer to your questions

BTW, from the case int buffer[10], we can see pre-new-expression is not a must for placement new(however, note that placement new itself is a new-expression, which will invoke operator new function because all it does is just construct here). If your question is "will placement new always be after operator new/new-expression", it will be a good question.

Update

One year ago, I was confused about how to combine operator new with the constructor then asked a question, FrankHB answered my question: https://tieba.baidu.com/p/508... Now, look back to this question, it is a X-Y question, what really confused me was how does new expression invoke constructor, so it is not related to placement new. Hope it will also inspire you.

Update again

所以我認為或許自己和您一年前的疑問相似，內存申請和構造函數這兩個過程是如何結合的呢？
the word combination(結合) is not properly now(I also make such mistake as said above), let me re-organize my wording:

new expression does two things:

1. allocate memory
2. initialization of the object

You and I(one year ago) are both confused about how does compiler initialize the object(via constructor or else) after allocating. Yes, I mentioned compiler, because C++ standard guarantee new will do the two things, but didn't how to, so, its compiler's work. So, it is not c++'s work, just compiler's. Now, we can see the assembly:

struct Foo
{
    Foo(int i) {}
};
int main()
{
    auto *a = new Foo(1);
}  

-O0:

Foo::Foo(int):
        push    rbp
        mov     rbp, rsp
        mov     QWORD PTR [rbp-8], rdi
        mov     DWORD PTR [rbp-12], esi
        pop     rbp
        ret
main:
        push    rbp
        mov     rbp, rsp
        push    rbx
        sub     rsp, 24
        mov     edi, 1
        call    operator new(unsigned long)
        mov     rbx, rax
        mov     esi, 1
        mov     rdi, rbx
        call    Foo::Foo(int)
        mov     QWORD PTR [rbp-24], rbx
        mov     eax, 0
        add     rsp, 24
        pop     rbx
        pop     rbp
        ret

codes related the new expression is follows: a

    mov     edi, 1
    call    operator new(unsigned long)
    mov     rbx, rax
    mov     esi, 1
    mov     rdi, rbx
    call    Foo::Foo(int)
    mov     QWORD PTR [rbp-24], rbx
    

Now, it is clear enough, right? assemble calls two procedures, oeprator new and Foo::Foo(int)

That's all, cheers!

So, your question is how the two combined?

一般習慣上id都是主鍵吧，主鍵就相當于唯一索引。對于你上面的情況，如果id字段有索引，那就不用再增加一個id+status的組合索引了

template

<a><i class="fa fa-star" *ngFor = "let star of stars;let i = index" [class.fa-star-o]="star" (click)="clickStars(i)"></a>

ts

clickStars(i: number){
  this.stars = this.stars.map((_, n) => n <= i)
}

在生成的框架中，打開.webppackrc文件，在其中添加如下配置：
"publicPath":"/", //參數填寫CDN地址即可

用jsx這樣的的語法糖來生成 Html

多個checkbox,設置值

  <input name="Fruit" type="checkbox" value="" />蘋果 </label>
<label>
  <input name="Fruit" type="checkbox" value="" />桃子 </label>
<label>
  <input name="Fruit" type="checkbox" value="" />香蕉 </label>
<label>
  <input name="Fruit" type="checkbox" value="" />梨 </label>

這么寫:

 var Fruits = $('[name="Fruit"]');
  var FruitsArray = Array.prototype.slice.call(Fruits);

  FruitsArray.forEach((v, index) => {
    v.onclick = function () {
      v.value = 'y'
    }
    for (var i = 0; i < FruitsArray.length; i++) {
      if (!FruitsArray[i].checked) {
        FruitsArray[i].value = 'n'
      }
    }

  });

把你的項目結構貼出來以及相關代碼貼出來

Number.isNaN都沒有的話，用babel轉一下或者換個瀏覽器吧。

https://github.com/vinta/awes...

//點擊確定按鈕的時候
addPermission:function(){

var that = this;
that.$validator.validateAll().then((result) => {
    //如果表單不為空
    if(result){
        var finalPath = that.new_path1 + ":" + that.new_path2;
        console.log(finalPath); //為什么是underfine
    }
})

}

sudo vi /etc/hosts