Question

您好我已经写了一个简单的表格数学设置，但我意识到它需要改变，基本上我需要创建的是检测到如果成人票是10或更高，每张票价7美元而不是10美元，但是如果每张票的9或以下仍然是10美元

＆＃13;

<form name="newshow" id="newshow" action="test.php" method="post" 
    oninput="totalamount.value = Math.round(adult.value * 10) 
	+ Math.round(student.value * 7); changedue.value = 
	Math.round(moneygiven.value - totalamount.value);">
        <fieldset>
            <select name="showtime" >
                <option value="" disabled="disabled" selected="selected">Performance</option>
                <option value='1' type="number" >Show 1 </option>
                <option value='2' type="number" >Show 2 </option>
                <option value='3' type="number" >Show 3 </option>
            </select>
            <h4>Ammount of Adults</h4>
                <input name="adult" id="adult" type="number" >
            <br />
            <h4>Ammount of Students</h4>
                <input name="student" type="number" >
            <br />
            <h4>Money Owed</h4>
                <input name="totalamount" readonly="1">
            <br />
            <h4>Money Given</h4>
                <input name="moneygiven" type="number" >
            <h4>Change due</h4>
                <input name="changedue" readonly="1">
                <input type="submit" />
        </fieldset>
  </form>

＆＃13;

我不确定从哪里开始，但我假设这可以通过脚本而不是＆＃34; oninput＆＃34;来完成。我目前正在使用

Answer 1

试试这个。这将检查成人票是否> = 10

<form name="newshow" id="newshow" action="test.php" method="post" 
oninput="totalamount.value =  ((adult.value >= 10) ? Math.round(adult.value * 7) : Math.round(adult.value * 10))  + Math.round(student.value * 7); 
changedue.value = Math.round(moneygiven.value - totalamount.value);">
    <fieldset>
        <select name="showtime" >
            <option value="" disabled="disabled" selected="selected">Performance</option>
            <option value='1' type="number" >Show 1 </option>
            <option value='2' type="number" >Show 2 </option>
            <option value='3' type="number" >Show 3 </option>
        </select>
        <h4>Ammount of Adults</h4>
            <input name="adult" id="adult" type="number" >
        <br />
        <h4>Ammount of Students</h4>
            <input name="student" type="number" >
        <br />
        <h4>Money Owed</h4>
            <input name="totalamount" readonly="1">
        <br />
        <h4>Money Given</h4>
            <input name="moneygiven" type="number" >
        <h4>Change due</h4>
            <input name="changedue" readonly="1">
            <input type="submit" />
    </fieldset>
</form>

价格从数量变化

1 个答案: