ExtJS - How to get DOM ID of a component?

问题

Say the component doesnt have an ID given to it. So how would you first, get a handle on the component, and then get the DOM Id of that component?

thanks in advance!

-Jack

回答1:

Use the javascript console. You can also install FireBug.

In your javascript code put:

 console.log(myComponentWhosIdIWantToGet);

Explore you object's properties.

回答2:

I believe this is what you need: http://docs.sencha.com/extjs/4.2.2/#!/api/Ext.Component-method-getEl

Example:

//get Dom Element
var DomEl = Ext.getCmp('ComponentID').getEl();
//get Id
var DomElId = DomEl.id;

回答3:

You can use this (not so many distinctions from answer of Meister but anyway):

var DomEl = Ext.getCmp('ComponentID').getEl().dom.id;

来源：https://stackoverflow.com/questions/20253834/extjs-how-to-get-dom-id-of-a-component