CODEWITHSUNDEEP
javascriptextjs
Dev G
Dev G

Reputation: 1407

Cannot read property 'getWidth' of undefined

I have below code which is defined inside a function which actually set width of parent component and do layout...this function is called from 4 places and at one place there is scenario that below error comes, you can see i have checked for undefined but still it is going inside this IF and i get error :( please help identify issue

Ext Js 3.4.2

ERROR

Uncaught TypeError: Cannot read property 'getWidth' of undefined

CODE

if((typeof Ext.getCmp("cmp1") !== 'undefined') && (typeof Ext.getCmp("cmp2") !== 'undefined')){
    Ext.getCmp("cmp1").setWidth(Ext.getCmp("cmp2").getWidth()-2);
    Ext.getCmp("cmp1").doLayout();
    }else{
         //Call self again in 3 sec once render
         //setTimeout("doLayoutofcustomPanel()", 3000);
    }

Upvotes: 0

Views: 3118

Answers (2)

Dev G
Dev G

Reputation: 1407

I able to figure out issue actually component was created but element (EL) was not present initially so it able to cross my IF check I need to put check as below to ensure element is present for which I need to fetch width. This worked fine

typeof Ext.getCmp("cmp2").el !== 'undefined'

I am using ExtJs 3.4.2

Upvotes: 2

newmount
newmount

Reputation: 1951

Not sure which version of ExtJs you are using, but its better to use itemId

itemId is scoped locally to the container -- avoiding potential conflicts with Ext.ComponentManager which requires a unique id

and then query to get it.

Upvotes: 0

Related Questions