Javascript stack blitz html
Const buttons = Document.QueryselectorAll('. Button')
Const body = document.queryselector('body')
buttons. forEach(function(button)) {
Console.log(button) ;
Button. Add Event Listner('click', function (Chao) {
Console.log (event. Target) type horhi ha
If(e. Target. I'd === 'grey') {
body. Style. backgroundColor = 'e. target. id;'}
If(e. Target. I'd === 'yellow') {
body. Style. backgroundColor = 'e. target. id;'}
If(e. Target. I'd === 'blue') {
body. Style. backgroundColor = 'e. target. id;'}
If(e. Target. I'd === 'purple') {
body. Style. backgroundColor = 'e. target. id;'}
<p><label>weight in kg</label><input type = 'text' id='weight'
<Button >calculate</button>
"Div id =" results"></div>
<p><label>weight in kg</label></p>
Under weight =less than 18.6</p>
<H3>.
})
))} ;
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