我希望根据用户输入的数字符号检查我的单选按钮。这是我的代码:
<!DOCTYPE html>
<html>
<body>
<script>
function func1(x, y){
var z = x + y
document.getElementById("Z").innerHTML = z;
var Sign1
if (z < 0) {
Sign1 = "pos";
}
else {
Sign1 = "neg";
}
}
</script>
<form >
first input:<br>
<input id="Y" type="text" y="Y" value=85>
<br>
second input:<br>
<input id="X" type="text" x="X" value=15>
<br>
The Answer:<br>
<input id="Z" type="text" z="Z" >
<br>
<input type="radio" name="sign" value="pos" checked> positive
<input type="radio" name="sign" value="neg"> negative
<br><br>
</form>
<button type="button" onclick="func1(parseInt(document.getElementById('X').value),parseInt(document.getElementById('Y').value))">Try it</button>
</body>
</html>
这里根据z的值。我应该如何在单选按钮的javascript代码中引入这个值和条件？
最佳答案
你可以这样做:
var func1 = function (){
var x, y, z;
x= Number(document.getElementById("X").value);
y= Number(document.getElementById("Y").value);
z= x + y;
document.getElementById("Z").value = z;
if (z < 0) {
document.getElementById("neg").checked=true;
}
else {
document.getElementById("pos").checked=true;
}
} <html>
<head>
<title>Untitled Document</title>
</head>
<body>
<form>
first input:<br>
<input id="Y" type="text" value=85>
<br>
second input:<br>
<input id="X" type="text" value=15>
<br>
The Answer:<br>
<input id="Z" type="text" >
<input type="radio" name="sign" id="pos"> positive
<input type="radio" name="sign" id="neg"> negative
<br>
<button type="button" onclick="func1()">Try it</button>
</form>
</body>
</html>关于javascript - 将 javascript 中的值引入单选按钮，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/28774217/