Mat Select Trigger Value

Please suggest or tell how we can do unit test for input and mat option inside mat select for dropdown brought to you by.
Mat select trigger value. So when you select any option the displaywith directive triggers the displayfn function which takes the object as an argument and returns the string based on the selected value. Mat option has ngfor and i am displaying some text and an icon in there so on selecting any one of the options both the some text and icon text is getting displayed in mat form field. Mat select not updating selected text when updating options dynamically 8716. Select element closed and selected option displayed.
I now see i need to use mat select trigger just haven t figured out exactly how yet. The event selectionchange is used with mat select element as following. You may be interested in using mat select trigger. When the select element is closed how can i make the selected option display something other than what is in the html.
To work with angular material select we need to import matselectmodule in application module file. Angular material select can also be created using native select element by adding matnativecontrol attribute with it. If i have a text bbnh and info icon. Select with custom trigger text.
Angular material select provides selectionchange event that emits when the selected value has been changed by the user. The issue here comes from the fact that the displayed value of the select comes directly from the textcontent of the option however there s no way for the select to know whether that value has changed. We can also use selected attribute in option tag of select element to set default value selected in select box. To set and get a value for mat select use value ngmodel formcontrol and formcontrolname property.
It might be tricky to do this in a performant way because it means that we d either have to maintain a mutationobserver on each of the options in order to know that the text changed or we d. Find the example to set select option selected using setvalue dynamically. Copy link quote reply author dunos commented nov 29 2017. Embed analytics and dashboards right inside your app with a js sdk.