我的函数中有一个带循环的代码..
请查看我的代码:
<!doctype html>
<html>
<head>
<title>Test</title>
</head>
<body>
Kies een tafel:
<select id="tafels">
<option value="1">Tafel 1</option>
<option value="2">Tafel 2</option>
<option value="3">Tafel 3</option>
<option value="4">Tafel 4</option>
<option value="5">Tafel 5</option>
<option value="6">Tafel 6</option>
<option value="7">Tafel 7</option>
<option value="8">Tafel 8</option>
<option value="9">Tafel 9</option>
<option value="10">Tafel 10</option>
</select>
<input type="submit" id="submit" value="bereken" onclick="tafel23();">
<div id="asd">
</div>
<script>
function tafel23(){
var value = document.getElementById('tafels').value;
var value1 = parseInt(value);
var teller = 0;
for(teller = 1; teller <= 10; teller++){
document.getElementById('asd').innerHTML=(value1 + " x " + teller + " = " + teller * value1 + "<br/>");
}
}
</script>
</body>
</html>
当我点击提交按钮时,我的循环开始... 但是当我执行innerHTML + =而不是它的工作时,整个循环就出现了,但是当我一次又一次按下提交按钮时,循环正在堆叠.. 所以我遇到的问题是,当我按下提交按钮时会出现循环,但不是一次又一次..
先谢谢你们!&lt; 3
答案 0 :(得分:2)
在执行循环之前尝试清除div:
function tafel23(){
var value = document.getElementById('tafels').value;
var value1 = parseInt(value);
//you might check value1 for NaN here
document.getElementById('asd').innerHTML=""; //clear it out
for(var teller = 1; teller <= 10; teller++){
document.getElementById('asd').innerHTML += value1 + " x " + teller + " = " + teller * value1 + "<br/>";
}
}