我想從另一個(gè)輸入值中獲取輸入值，所以如果我在第一個(gè)輸入中添加數(shù)字，第二個(gè)輸入從第一個(gè)輸入中減少，有人可以幫助我......$value1 = 10;echo "<input type='text' value='$value2'></input>";$value3 = $value1 - $value2;echo "<input type='text' value='$value3'></input>";
2 回答
繁華開(kāi)滿天機(jī)
TA貢獻(xiàn)1816條經(jīng)驗(yàn) 獲得超4個(gè)贊
使用 javascript 解決這類問(wèn)題很容易處理
<!DOCTYPE html>
<html>
<head>
<title></title>
</head>
<body>
<input type="text" name="val2" id='val2' oninput="loadVal3(this.value)">
<input type="text" name="val3" id='val3'>
<script type="text/javascript">
function loadVal3(val) {
let val1=10;
if(!isNaN(val)&&val!=""){
document.getElementById('val3').value=val1-val;
}else{
document.getElementById('val3').value="";
}
}
</script>
</body>
</html>
慕桂英3389331
TA貢獻(xiàn)2036條經(jīng)驗(yàn) 獲得超8個(gè)贊
// i use the REQUEST HTTP Request variables (is can changed by GET Or Post request
$secoundVarible = $_REQUEST['value'];
$staticValue = 10;
function reduceValue($num1,$num2){
return $result = $num1 - $num2;
}
$reducedValue = reduceValue($staticValue, $secoundVarible);
echo "<input type='text' value='$reducedValue'></input>";
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