[英]How to make an input not case sensitive
I want to know how make it when the user types in something to an input it doesn't have to be the same capitalization as the value for the document.getElementById("spanId").innerHTML = "146.5 meters";
我想知道当用户在输入中输入内容时如何使其不必与
document.getElementById("spanId").innerHTML = "146.5 meters";
的值相同大小写document.getElementById("spanId").innerHTML = "146.5 meters";
to appear.出现。
HTML HTML
<input id="ask" type="text"
placeholder = "Ex: how tall is the Gateway Arch"
onfocus="this.placeholder = ''"
onblur="this.placeholder = 'Ex: how tall is the gateway arch'"
text-align: center/>
JS JS
document.getElementById("button").onclick = function() {
if (document.getElementById("ask").innerHTML == "how tall are the pyramids") {
document.getElementById("spanId").innerHTML = "146.5 meters";
} else if (document.getElementById("ask").value == "how tall is the gateway arch") {
document.getElementById("spanId").innerHTML = "630 feet";
} else if (document.getElementById("ask").value == "how tall is the empire state building") {
document.getElementById("spanId").innerHTML = "1,454 feet";
}
}
First , use value
instead of innerHTML
for input fields首先,对输入字段使用
value
而不是innerHTML
Second , convert both side lowercase or uppercase during comparing其次,在比较时转换两边的小写或大写
Try like this像这样尝试
var ask=document.getElementById("ask").value.toLowerCase();
if (ask =="how tall are the pyramids")
Or like this或者像这样
var ask=document.getElementById("ask").value.toUpperCase();
if (ask =="how tall are the pyramids".toUpperCase())
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