Ric*_*cky 0 html javascript if-statement
当我输入游戏的ID号时,我总是得到我的if else表达式的第3个语句.我哪里错了？!!
<html>
<body>
<p>Type in the ID and hit search:</p>
<button onclick="myFunction()">Search</button>
<p id="demo"></p>
<form>
<input id="textbox" type="text" />
</form>
<script>
var textboxValue = document.getElementById("textbox").value;
function myFunction() {
var message;
if (textboxValue == 1) {
message = "Fantasy World";
} else if (textboxValue == 2) {
message = "Sir Wags A Lot";
} else {
message = "Take a Path";
}
document.getElementById("demo").innerHTML = message;
}
</script>
</body>
</html>
问题是你总是测试输入的相同初始值.
更改
var textboxValue = document.getElementById("textbox").value;
function myFunction() {
至
function myFunction() {
var textboxValue = document.getElementById("textbox").value;
这样,每次调用函数时都会读取该值.