Javascript document.observe('dom:loaded', function() {
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document.observe('dom:loaded', function() {
提问by thenengah
Is there a way to have this prototype js trigger only when dom is changed and not loaded?
有没有办法让这个原型js只在dom改变而不加载时触发？
回答by robjmills
you can observe elements changing like this
你可以观察到元素像这样变化
$('element').observe('change',function(e){ } );
This is reserved for form elements though - textarea, select and input.
这是为表单元素保留的 - 文本区域、选择和输入。
The final code would look something like:
最终代码如下所示：
document.observe('dom:loaded', function() {
$('element').observe('change',function(e){
// do something here
});
});
回答by Colin Fine
The 'change' method is defined only for 'input', 'textarea' and select elements, not for general elements.
'change' 方法只为 'input'、'textarea' 和 select 元素定义，而不是为一般元素定义。
The "dom:loaded" event is a user-defined event (as far as the browser is concerned) defined by the Prototype library. I don't believe that it is usable as any kind of template for a dom:changed event.
"dom:loaded" 事件是由 Prototype 库定义的用户定义事件（就浏览器而言）。我不相信它可以用作 dom:changed 事件的任何类型的模板。
What you are looking for are DOM mutation events, such as DomSubtreeModified (see 1). But I don't believe these are widely supported in browsers yet.
您正在寻找的是 DOM 突变事件，例如 DomSubtreeModified（参见1）。但我不相信这些在浏览器中得到广泛支持。
