This is my html:

<select id="popularCategorySelectID">
    <option id="1" value="false" selected="selected">No</option>
    <option id="2" value="true">Yes</option>
</select>   

And this is my javascript:

var popularCategorySelectElement = document.getElementById("popularCategorySelectID");
var popularCategorySelectElementValue = Boolean(popularCategorySelectElement.options[popularCategorySelectElement.selectedIndex].text);   

I want to get the Boolean value like true or false here in popularCategorySelectElementValue. With the above code I am always getting true. I have tried with [ngValue]="true" but the result is same true.

Thanks for your time!

This is my html:

<select id="popularCategorySelectID">
    <option id="1" value="false" selected="selected">No</option>
    <option id="2" value="true">Yes</option>
</select>   

And this is my javascript:

var popularCategorySelectElement = document.getElementById("popularCategorySelectID");
var popularCategorySelectElementValue = Boolean(popularCategorySelectElement.options[popularCategorySelectElement.selectedIndex].text);   

I want to get the Boolean value like true or false here in popularCategorySelectElementValue. With the above code I am always getting true. I have tried with [ngValue]="true" but the result is same true.

Thanks for your time!

• javascript
• html
• html-select
• getelementbyid

Share Improve this question Follow edited Jul 22, 2020 at 7:56 Andrew 38333 silver badges1515 bronze badges asked Jul 22, 2020 at 7:35 Avow StudioAvow Studio 8733 silver badges88 bronze badges 3

• Well, you're selecting the text inside each option. So you're selecting "No" or "Yes" which have no direct relation to a boolean value. Also, any non-empty string using Boolean() will return true. – Nathan Champion Commented Jul 22, 2020 at 7:39
• You could make a function which checks the value Yes or No and returns a boolean. – Karan Kumar Commented Jul 22, 2020 at 7:40
• I think you can find the answer in here. – Sett Paing Commented Jul 22, 2020 at 7:41

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2 Answers 2

Sorted by: Reset to default 4

let bool = document.querySelector('#popularCategorySelectID').value === "true" ? true : false

Or even simply:

// this will return true if the conditional is true 
let bool = document.querySelector('#popularCategorySelectID').value === "true"

You could get a boolean value as this.

You can simply do this :

document.getElementById("popularCategorySelectID").value