items.width String|Number
Determines the width of the item. Valid only for the spacer items. Numeric values are treated as pixels.
Example - set the width for an item
<div id="appbar"></div>
<script>
$("#appbar").kendoAppBar({
items: [
{
type: "contentItem",
template: "<span><input /><span>"
},
{
type: "spacer",
width: 60
},
{
type: "contentItem",
template: "<h1>This is just a text</h1>"
},
]
});
</script>