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[英]How can I make it so javascript detects different display sizes and then goes to a website depending on the size?
[英]How can I make it so a different result occurs depending on an input?
我有以下代码,我想知道而不是这样做,以便如果输入数组中的任何变量,它将带您到index.php
,我想要它,所以如果输入第一个,它将带您到1.html
,如果输入 2,它将带您到2.html etc
。 这可能吗?
HTML 代码:
<center>
<form
name="myForm"
onsubmit="return validateForm()"
method="post"
>
<h1 style = "color:white;">Enter code </h1>
<input type="text" name="value" style="padding: 5px; border-radius: 6px; border: 0px solid transparent;"/>
<br><br>
<input type="submit" class = "ex" value="Enter/submit" style="border-radius: 6px; font-size: 18px;display: inline-block; padding: 20px; border: none; background-color: royalblue; color: white;"/>
</form>
</center>
JavaScript 代码:
var cars = ["Saab", "Volvo", "BMW"];
function validateForm() {
var x = document.forms["myForm"]["value"].value;
if (cars.indexOf(x) == -1) {
alert("no car entered");
return false;
}
var x = document.forms["myForm"]["value"].value;
if (cars.indexOf(x) != -1) {
window.location.href = "index.php";
return false;
}
}
像这样的东西? 只需将 console.log 替换为您想要的重定向即可。
const cars = ["Saab", "Volvo", "BMW"] function validateForm() { const inputValue = document.forms["myForm"]["value"].value; if (inputValue === cars[0]) { console.log("Redirect to 1.html"); } else if (inputValue === cars[1]) { console.log("Redirect to 2.html"); } else if (inputValue === cars[2]) { console.log("Redirect to 3.html"); } else { console.log("no car entered") } return false; }
<form name="myForm" onsubmit="return validateForm()" method="post"> Enter code <input id="formInput" type="text" name="value" /><br> <input type="submit" class="ex" value="Enter/submit" /> </form>
要重定向到 1.html、2.html 等形式的 URL 等,我们注意到所需的数字是汽车的索引。 所以我们要重定向到的地方就是这个 index.html
这是实现这一点的代码。
<center>
<form name="myForm" onsubmit="return validateForm()" method="post">
<h1 style = "color:black;">Enter code </h1><input type="text" name="value" style="padding: 5px; border-radius: 6px; border: 1px solid red;"/>
<br><br><input type="submit" class = "ex" value="Enter/submit" style="border-radius: 6px; font-size: 18px;display: inline-block; padding: 20px; border: none; background-color: royalblue; color: white;"/>
</form>
</center>
<script>
var cars = ["Saab", "Volvo", "BMW"];
function validateForm() {alert(document.forms);alert(document.forms["myForm"]["value"].value);
var x = document.forms["myForm"]["value"].value;
if(cars.indexOf(x) == -1){
alert("no car entered");
return false;
}
else{
window.location.href = cars.indexOf(x) + ".html";
}
}
</script>
笔记:
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