4-15编程练习
来源：4-15 编程练习
soso_crazy
2019-02-09 18:46:43
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style>
.oneline {
line-height: 1.5;
margin: 10px auto;
}
.oneline label {
width: 100px;
text-indent: 15px;
font-size: 14px;
font-family: "Microsoft Yahei";
display: inline-block;
}
.oneline .sinput {
width: 60%;
height: 30px;
border-radius: 6px;
border: 1px solid #e2e2e2;
}
.oneline input[type="submit"] {
margin-left: 20px;
width: 80px;
height: 30px;
border: 0;
background-color: #5899d0;
color: #fff;
font-size: 14px;
border-radius: 6px;
}
.error-messages {
color: red;
}
</style>
</head>
<body>
<form id="forms">
<div class="oneline">
<label for="name">用户名:</label>
<input id="name" class="sinput" name="name" type="text" required>
</div>
<div class="oneline">
<label for="email">Email:</label>
<input id="email" class="sinput" name="email" type="email" required>
</div>
<div class="oneline">
<input type="submit" id="submits" value="提交">
</div>
</form>
<script>
function replaceValidationUI(form) {
form.addEventListener("invalid", function(event) {
event.preventDefault();
}, true);
form.addEventListener("submit", function(event) {
if (!this.checkValidity()) {
event.preventDefault();
}
},true);
//此处写代码
var submitButton=ducument.getElementById('submits');
submitButton.addEventListener('click',function(event){
var inValidityFalse=form.querySelectorAll(:invalid),
errorMessage=form.querySelectorAll('.errorMessage');
})
for(var i=0;i<errorMessage.length;i++){
errorMessage[i].parentNode.removeChild(errorMessage[i]);
}
for(var i=0;i<inValidityFalse.length;i++){
parent=inValidityFalse[i].parentNode;
parent.insertAdjacentHTML('afterbegin',"<div class='error-message'>" + inValidityFalse[i].validationMessage + "</div>")
}
if (invalidFields.length > 0) {
invalidFields[0].focus();
}
}
var forms = document.getElementById("forms");
replaceValidationUI(forms);
</script>
</body>
</html>
为什么无法实现要求？
1回答
-
好帮手慕夭夭
2019-02-11
你好同学 , 问题与修改如下:
\
另外 ,根据效果图 ,提示信息要在最前面 ,并且文字是红色的 ,如下:
祝学习愉快 ,望采纳 .
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