Chartjs-Unable to display point values without mouse hover

In the type of v2.5.0

`options: {
    tooltips: {
         enabled: false
    }
}`

or

`tooltips :{
            custom : function(tooltipModel) {
                tooltipModel.opacity = 0;
            }
 }`

type of v2.1.4

`Chart.defaults.global.tooltips.enabled = false;`

people said those ways are work, but not in all charts type.