我试图在谷歌周围寻找一种方法来更改以下情况的按钮颜色:
假设我在单击的地方有一个onclick按钮,它会打开一个模式框,其中包含一个输入框和一个提交按钮。
如果我在“输入”框中输入“ 90”并提交,它将与
我的目标值“ 100”
如果我输入的值小于目标值,则onclick按钮将
变成红色,其文本将更改为“ 90”
如果我输入的值大于目标值,则onclick按钮
将变为绿色,其文本将更改为“ 90”
请帮忙 !任何想法都会有所帮助。
最佳答案
// Get the button that opens the modal
var btn1 = document.getElementById('b1');
// When the user clicks on the button, open the modal
btn1.onclick = function() {
modal.style.display = "block";}
// Get the modal
var modal = document.getElementById('myModal');
// Get the <span> element that closes the modal
var span = document.getElementsByClassName("close")[0];
// When the user clicks on <span> (x), close the modal
span.onclick = function() {
modal.style.display = "none";
}
// Arithematic Operator Control
var target_value = document.getElementById('inputtarget');
function checkValue(){
var inputvalue = document.getElementById('modal1');
var buttonsubmit = document.getElementById('b1');
var value = parseInt(inputvalue.value);
var targetValue = parseInt(target_value.value);
if (value < targetValue){
buttonsubmit.style.background = 'red' ;
buttonsubmit.innerText = value ;
}
else if (value > targetValue){
buttonsubmit.style.background = 'green';
buttonsubmit.innerText = value ;
}
else{
buttonsubmit.style.background = '';
buttonsubmit.innerText = '1';
}
modal.style.display = "none";
return false;
}
#inputtarget {
height: 60px;
width: 100px;
font-size: 1.5rem;
text-align: center;
border: 1;
}
/* The Modal (background) */
.modal {
display: none; /* Hidden by default */
position: fixed; /* Stay in place */
z-index: 1; /* Sit on top */
left: 0;
top: 0;
width: 100%; /* Full width */
height: 100%; /* Full height */
background-color: rgb(0,0,0); /* Fallback color */
background-color: rgba(0,0,0,0.4); /* Black w/ opacity */
}
/* Modal Content/Box */
.modal-content {
background-color: #fefefe;
margin: 15% auto; /* 15% from the top and centered */
padding: 20px;
border: 1px solid #888;
width: 240px;
height: 200px;
}
#modal1 {
height:70px;
width:100px;
text-align: center;
}
/* The Close Button */
.close {
color: #aaa;
float: right;
font-size: 28px;
font-weight: bold;
}
.close:hover,
.close:focus {
color: black;
text-decoration: none;
cursor: pointer;
}
<!-- Button and Target Value -->
<div>
<button id="b1" onclick="return checkValue()">1</button>
<input id="inputtarget" type="number" ondrop="returnfalse;" onpaste="returnfalse;"
onkeypress='return event.charCode>=48 && event.charCode<=57';><br>
</div>
<!-- The Modal Box -->
<div id="myModal" class="modal">
<!-- Modal content -->
<div class="modal-content">
<span class="close">×</span>
<p>PLEASE INPUT QUANTITY</p>
<input id=modal1 type="number" ondrop="returnfalse;" onpaste="returnfalse;"
onkeypress='return event.charCode>=48 && event.charCode<=57';
style=font-size:20px><br>
<br>
<button id="submit" onclick="return checkValue()">SUBMIT</button>
</div>
</div>
这里的jsfiddle中的相同代码
关于javascript - 更改基于按钮颜色的比较模态输入值和目标输入值,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/48088393/