Mat Select Default

Using only mat select is the single selection mode by default.

Mat select default.

What is the current behavior. Dxl pro asked 3 years ago. Damian gemza staff answered 3 years ago. This is a pretty common scenario so it should be supported.

My typescript file contains. Choosing the default mat option in a mat select list tl dr. The mat select component has a comparewith property that accepts a function to compare two objects. This returns true or false depending on whether they represent the same object.

Instead of showing placeholder option i want to preselect an option. I want my to have a default value but it is not working as expected. Angular material select provides selectionchange event that emits when the selected value has been changed by the user. When undefined reset option is selected in mat select and you open the options list and select the undefined option again both valuechange and ngmodelchange events are fired.

The event selectionchange is used with mat select element as following. Material select how to set default value. Mat form field mat label select student mat label mat select mat option value 101 krishna mat option mat option value 102 mahesh mat option mat option value 103 shiva mat option mat select mat form field. Initially the mat select is empty unless i select one of the options the selection changes are reflected to the user role so this is a correct behaviour which versions of angular material os typescript browsers are affected.

To make it multiple selections just add a multiple attribute to the mat select. I am using angular 7 and angular material. The mat has to set the user s role as the default selected value. I am trying to set the value to default to one of the options however it is being left selected when the page renders.

Bug feature request or proposal. Mat select selectionchange onbookchange event mat select. We need to use mat select inside mat form field element. When you do the same with non undefined option none of the events is fired.

Find the code snippet.