我正在尝试将单个文本框值" totalmarkstoall" 的值与多个文本框" marksscored&#34进行比较; ,下面我的java脚本也在关键功能上进行比较。
无法做到的是,如果" marksscored" 的值比perticuler文本框大,那么" totalmarkstoall" 然后显示弹出窗口:但它应该擦除值也应该不允许输入。
function scorecompare(idval) {
var marksscored = idval;
var totalmarkstoall = document.getElementById("totalmarkstoall").value;
if (parseInt(marksscored) > parseInt(totalmarkstoall))
{
alert("greater than Total Mrks");
} else {
}
}

<input id="totalmarkstoall" type="number" style="border: 1px solid #dbdbdb;" placeholder="Enter Total Marks"></input>
<table>
<tr>
<td>
<input type="text" name="marksscored[]" id="marksscored[0]" value="" onkeyup="scorecompare(this.value);"/>
</td>
</tr>
<tr>
<td>
<input type="text" name="marksscored[]" id="marksscored[1]" value="" onkeyup="scorecompare(this.value);"/>
</td>
</tr>
<tr>
<td>
<input type="text" name="marksscored[]" id="marksscored[2]" value="" onkeyup="scorecompare(this.value);"/>
</td>
</tr>
</table>
&#13;
答案 0 :(得分:0)
如果您执行此类操作,则可以知道该值来自哪个输入字段。
HTML:
<table>
<tr>
<td>
marksscored Array of text box's
</td>
</tr>
<tr>
<td>
<input type="text" name="marksscored[]" id="marksscored[0]" value="" onkeyup="scorecompare(this);">
</td>
</tr>
<tr>
<td>
<input type="text" name="marksscored[]" id="marksscored[1]" value="" onkeyup="scorecompare(this);">
</td>
</tr>
<tr>
<td>
<input type="text" name="marksscored[]" id="marksscored[2]" value="" onkeyup="scorecompare(this);">
</td>
</tr>
</table>
JS:
function scorecompare(idval) {
var marksscored = idval;
var totalmarkstoall = document.getElementById("totalmarkstoall").value;
if (parseInt(marksscored.value) > parseInt(totalmarkstoall))
{
alert("greater then Total Mrks");
//do things with inputfield marksscored
} else {
}
}
答案 1 :(得分:0)
你可以使用jquery做这样的事情:
在keyup
上计算所有文本字段的总和
检查是否大于总计
如果是这种情况警告并删除当前文本字段$(this).val("");
答案 2 :(得分:0)
试试这个。像这样使用keyUp
事件。
$( ".marksscored" ).keyup(function() {
var marksscored = $(this).val();
var totalmarkstoall = document.getElementById("totalmarkstoall").value;
if (parseInt(marksscored) > parseInt(totalmarkstoall))
{
alert("greater then Total Mrks");
$(this).val("");
} else {
// do something
}
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<input id="totalmarkstoall" type="number" STYLE=" border: 1px solid #dbdbdb;" placeholder="Enter Total Marks"></input>
<table>
<tr>
<td>
<input type="text" class="marksscored" name="marksscored[]" id="marksscored[0]" value="" />
</td>
</tr>
<tr>
<td>
<input type="text" class="marksscored" name="marksscored[]" id="marksscored[1]" value="" />
</td>
</tr>
<tr>
<td>
<input type="text" class="marksscored" name="marksscored[]" id="marksscored[2]" value="" />
</td>
</tr>
</table>