Thanks for the bootstrap-iconpicker.
Following code is not working on the page, while methods work fine.
$('#IconPicker').iconpicker({
cols: 5,
rows: 3,
footer: false,
header: false,
iconset: { iconClass: 'fontawesome', iconClassFix: 'fa-', icons: [
'bolt', 'bullseye', 'ambulance', 'bell'
]},
placement: 'bottom',
search: false,
});

following code is work
$('#IconPicker, #SelectIcon').iconpicker()
.iconpicker('setCols', 5)
.iconpicker('setRows', 3)
.iconpicker('setFooter', false)
.iconpicker('setHeader', false)
.iconpicker('setIconset', {
icons: [
'empty',
'fas fa-fire',
'fab fa-gripfire',
'fas fa-bell',
'far fa-bell',
'fas fa-exclamation',
'fas fa-exclamation-triangle',
'fas fa-ambulance',
'fas fa-bullhorn',
'fas fa-bullseye',
'fas fa-broadcast-tower',
'fas fa-bolt',
'fas fa-phone-volume',
'fas fa-power-off',
'fab fa-itunes-note'
]
})
.iconpicker('setIcon', 'empty')
.iconpicker('setPlacement', 'bottom')
.iconpicker('setSearch', false)