如何等待，直到用javascript加载网页？ [英] How to wait until a web page is loaded with javascript?

问题描述

我想用html改变html中的两个页面，但是当我改变 window.location 时，这个句子后面的代码继续执行。

因此，当我这样做时，例如，调用 getElementById（）时，它无法识别该元素，因为该页面是

  function myFun（）{
 
 // ... 
 
 window.location ='page.html'; 
 
 // ...等到page.html被加载
 
} 
  

如何等待页面加载以避免此问题？

解决方案

  window.location ='page.html'; 
  

您在浏览器中替换页面，其中包含代码 myFun ，通过一个新页面。

如果你想执行它，并且只有在改变页面之后（但我没有看到点），那么你可能会做$ /

pre $ document.onload = function（）{window.location ='page.html'; };


I want to change between two pages in html with javascript, but when I change with window.location, the code that is after this sentence continues executing.

So when I do, for example, a call to getElementById() it doesn't recognize the element because the page is still loading.

function myFun(){

    // ...

    window.location = 'page.html';

    // ... wait until page.html is loaded

}

How can I wait until the page is loaded to avoid this problem?

解决方案

When you do

window.location = 'page.html';

you replace the page in the browser, the one containing the code of myFun, by a new page. There is no way for the code following this instruction to be executed.

If you want to execute it, and only after that change page (but I don't see the point), then you might do

document.onload = function(){ window.location = 'page.html'; };

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