Event fires when the grid width is changed. The "responsive" configuration setting should be set to true in order this event to fire.
Examples
sample
<table id="grid"></table>
<script>
var grid = $('#grid').grid({
dataSource: '/0_6/Grid/GetPlayers',
responsive: true,
columns: [ { field: 'ID' }, { field: 'Name' }, { field: 'PlaceOfBirth' } ]
});
grid.on('resize', function (e, newWidth, oldWidth) {
alert('resize is fired.');
});
</script>