Mat Select Default Selected Option

When present it specifies that an option should be pre selected when the page loads.

Mat select default selected option. Angular material select provides selectionchange event that emits when the selected value has been changed by the user. Angular material select is created using mat select which is a form control for selecting a value from a set of options. So it seems you need to have the mat select and the mat option values not only be the same number if you are presenting numbers but also let them be of type string. Use comparewith a function to compare the option values with the selected values.

Depending on a use case it is good to know that initializing some default options as selected might not work by simply binding to the ngmodel because default values are different object instances than those in the options array. Angular material form controls select mat select example by didin j updated on feb 03 2020 the series of a comprehensive step by step angular material components tutorial about form controls select mat select complete with the working examples. Find the example to set select option selected using setvalue dynamically. We can also use selected attribute in option tag of select element to set default value selected in select box.

Dynamically set value using formgroup setvalue setvalue sets the value in each and every form control of formgroup. To set and get a value for mat select use value ngmodel formcontrol and formcontrolname property. Select option selected am option option pm option select but the following is the angular 2 way which allows you to dynamically assign selected value which may be the practical and common use case. Find the steps to use select element for single.

The selected attribute is a boolean attribute. The event selectionchange is used with mat select element as following. Single select option in angular selectcontrolvalueaccessor writes values and listens changes for select element. With angular material there is no selected property on mat option while there is a request to support this andrey kolybelnikov explains how this works.

In the above form profile form control will be used for single select dropdown and technologies form control will be used for multiple select options in our demo. You need to import formsmodule. The pre selected option will be displayed first in the drop down list. This directive works for both formsmodule and reactiveformsmodule.