Cannot replace image with jQuery function

If I disable the plugin, this code worked well.

j('a.woocommerce-main-image').error(function() {
        j( this ).attr( 'href', jdefault_url );
    }).attr('href', jnewsrc);

    j('a.woocommerce-main-image img').error(function() {
        j( this ).prop( 'src', jdefault_url );
    }).prop('src', jnewsrc);

    j('a.woocommerce-main-image img').error(function() {
        j( this ).prop( 'src-orig', jdefault_url );
    }).prop('src-orig', jnewsrc);

    j('a.woocommerce-main-image img').error(function() {
        j( this ).prop( 'alt', 'no image');
    }).prop('alt', jnewalt);
    j('a.woocommerce-main-image img').error(function() {
        j( this ).prop( 'title', 'no image');
    }).prop('title', jnewtitle);

    j('a.woocommerce-main-image img').error(function() {
        //j( this ).prop( 'srcset', jdefault_srcset );
        //jname = jdefault_name;
    }).attr('srcset', jnewsrcset);

still not working with updated code
only ‘Alt’ and ‘Title’ seems to work,
probably because there’s no conflict with frontend.js

var jmain_img_zoom = j('a.woocommerce-main-image');
var jmain_img_image = j('a.woocommerce-main-image img');
// some code to generate new src, srcset
jmain_img_zoom.error(function() {
        j( this ).prop( 'href', jdefault_url );
    }).prop('href', jnewsrc);

    jmain_img_image.error(function() {
        j( this ).prop( 'src', jdefault_url );
    }).prop('src', jnewsrc);

    jmain_img_image.error(function() {
        j( this ).prop( 'src-orig', jdefault_url );
    }).prop('src-orig', jnewsrc);

    jmain_img_image.error(function() {
        //j( this ).prop( 'srcset', jdefault_srcset );
        //jname = jdefault_name;
    }).prop('srcset', jnewsrcset);

    jmain_img_image.error(function() {
        j( this ).prop( 'alt', 'no image');
    }).prop('alt', jnewalt);
    jmain_img_image.error(function() {
        j( this ).prop( 'title', 'no image');
    }).prop('title', jnewtitle);