Jquery $（this）.val（）不起作用

Question

I am having issues using jquery to set the value a element which calls a function. Here is the code

Element:

 each outlet in FBoutlets  
        br
        label(for='FBoutlet') Facebook: #{outlet.FBoutlets.name}  
        input(type='checkbox', value='', onchange="streamFB(" + outlet.FBoutlets.FBpageId + "," + JSON.stringify(outlet.FBoutlets.FBaccessToken) + ")", name='FBoutletCredentials', id='FBoutlet')

Function:

  script.
    window.fbAsyncInit  = function()  {
    FB.init({
      appId             : '20212222222',
      autoLogAppEvents  : true,
      xfbml             : true,
      version           : 'v2.12'
      });
      };

    function streamFB(pageId, accessToken){
      FB.api(
        '/' + pageId + '/live_videos',
        'POST',
        {access_token: accessToken},
        function(response) {
            let rtmp = response.stream_url
            console.log(rtmp)
            console.log(response)
            $(this).val() = rtmp;
        }
      );
    }

$(this).val() is returning undefined, I need to use this because the element id dynamically generated

Answer 1

You should change it

$(this).val() = rtmp;

to

$(this).val(rtmp);

Answer 2

jquery val function takes argument value as assigning value

Definition and Usage

The val() method returns or sets the value attribute of the selected elements.

When used to return value:

This method returns the value of the value attribute of the FIRST matched element.

When used to set value:

This method sets the value of the value attribute for ALL matched elements.

Note: The val() method is mostly used with HTML form elements.

Syntax

Return the value attribute:

$(selector).val()

Set the value attribute:

$(selector).val(value)

Set the value attribute using a function:

$(selector).val(function(index,currentvalue));

Parameter Description

value Required. Specifies the value of the value attribute function(index,currentvalue) Optional. Specifies a function that returns the value to set. index - Returns the index position of the element in the set currentvalue - Returns the current value attribute of selected elements

source: https://www.w3schools.com/jquery/html_val.asphttps://www.w3schools.com/jquery/html_val.asp

Answer 3

Alternate solutions,

$(this)[0].value = rtmp;

or

this.value = rtmp;

Answer 4

I think you have to update $(this).val() = rtmp; to -

$(this).val(rtmp);

Or,

this.value = rtmp;

Answer 5

Change $(this).val() = rtmp; to $(this).val(rtmp);