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yysun / apprun

AppRun is a JavaScript library for developing high-performance and reliable web applications using the elm inspired architecture, events and components.

Home Page:https://apprun.js.org

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How to put 'selected' on <option>?

jkleiser opened this issue · comments

commented

I'm struggling with a very basic problem. I have created a <select> with a few <option> elements, but I cannot figure out how to make a certain <option> the selected one. I have a function that generates the <option> element, and it currently looks like this:

const renderMyOption = (obj, selNo, i) =>
  selNo == i ?
    <option value={i} selected>{obj.title}</option> :
    <option value={i}>{obj.title}</option>

I have also tried to put the condition and the selected inside the <option>, but I have found no way that works.

commented
commented

What confused me was that the selected attribute did not show when I inspected the elements in my browser (Brave and Safari). A little more testing, however, showed that manipulating my selNo in the state actually caused my <select> to respond correctly. I have now put the condition inside my <option> like this:

const renderMyOption = (obj, selNo, i) =>
  <option value={i} selected={selNo == i}>{obj.title}</option>
commented