ParamQuery grid support forum

General Category => Help for ParamQuery Pro => Topic started by: queensgambit9 on November 17, 2016, 01:53:07 pm

Title: Call function from listener
Post by: queensgambit9 on November 17, 2016, 01:53:07 pm

Hi

I would like to call a function from a listener:

listener: function () {             
   call function in the create: function part
}

create: function (evt, ui) {   
   function code   
}

How can I do that?
Thanks.

Title: Re: Call function from listener
Post by: paramvir on November 17, 2016, 07:38:48 pm

Anonymous functions are commonly used in event callbacks, they are not so convenient to be called at will.

Please use following ways:

1. use an initialization object.

Code: [Select]

        //obj is initialization object.
        var obj = {
width: "80%",
height: 400,
title: "Grid From JSON",
create: function create(){
alert('create');
},
toolbar: {
items:[
{
type:'button',
label:'call create',
listener: function(){
obj.create.call(this);
}
}
]
},
scrollModel: { autoFit: true },
dataModel: { data: data }
        };


2. Abstract the common functionality into a named function and then you can call the functions by their names.

3.

Code: [Select]

listener: function(){
this.option('create').call(this);
}