本文展示了如何使用AngularJS框架，通过下拉菜单的选择来改变输入框的样式。当用户选择不同的选项时，输入框的类名会相应改变，从而影响其外观。例如，当用户选择'只有输入框样式变化'时，如果输入的密码长度不足或两次输入不一致，输入框将显示特定样式。此外，还有'显示详细信息'和'点击时显示效果'两种模式，提供不同的反馈信息和交互体验。
<script type="text/javascript" src="js/angular.min.js" ></script>
<style>
.ip {
border: 1px solid red;
}
</style>
</head>
<body ng-app="MyApp" ng-controller="MyCont">
<select ng-change="sel()" ng-model="xuan" ng-init="xuan='只有输入框样式变化'">
<option>只有输入框样式变化</option>
<option>显示详细信息</option>
<option>点击时显示效果</option>
</select><br /> 输入密码
<input type="text" ng-model="pwd" class="{{pass}}" /><br /> 重复密码
<input type="text" ng-model="pwd1" class="{{pass}}" /><br />
<button ng-click="cli()">提交</button>
<ul class="ul" ng-hide="hi">
<li ng-repeat="li in xin">{{li}}</li>
</ul>
<script type="text/javascript">
var mo = angular.module("MyApp", []);
mo.controller("MyCont", function($scope) {
$scope.sel = function() {
var aa = $scope.xuan;
$scope.xin = [];
if(aa == "只有输入框样式变化") {
var pwd = $scope.pwd;
var pwd1 = $scope.pwd1;
if(pwd == undefined || pwd1 == undefined) {
$scope.pass = "ip";
}
if(pwd.length <= 6 || pwd1.length <= 6) {
$scope.pass = "ip";
}
if(pwd != pwd1) {
$scope.pass = "ip";
}
} else if(aa == "显示详细信息") {
var pwd = $scope.pwd;
var pwd1 = $scope.pwd1;
$scope.pass = "vp";
if(pwd == undefined || pwd1 == undefined) {
$scope.xin.push("密码不能为空");
}
<style>
.ip {
border: 1px solid red;
}
</style>
</head>
<body ng-app="MyApp" ng-controller="MyCont">
<select ng-change="sel()" ng-model="xuan" ng-init="xuan='只有输入框样式变化'">
<option>只有输入框样式变化</option>
<option>显示详细信息</option>
<option>点击时显示效果</option>
</select><br /> 输入密码
<input type="text" ng-model="pwd" class="{{pass}}" /><br /> 重复密码
<input type="text" ng-model="pwd1" class="{{pass}}" /><br />
<button ng-click="cli()">提交</button>
<ul class="ul" ng-hide="hi">
<li ng-repeat="li in xin">{{li}}</li>
</ul>
<script type="text/javascript">
var mo = angular.module("MyApp", []);
mo.controller("MyCont", function($scope) {
$scope.sel = function() {
var aa = $scope.xuan;
$scope.xin = [];
if(aa == "只有输入框样式变化") {
var pwd = $scope.pwd;
var pwd1 = $scope.pwd1;
if(pwd == undefined || pwd1 == undefined) {
$scope.pass = "ip";
}
if(pwd.length <= 6 || pwd1.length <= 6) {
$scope.pass = "ip";
}
if(pwd != pwd1) {
$scope.pass = "ip";
}
} else if(aa == "显示详细信息") {
var pwd = $scope.pwd;
var pwd1 = $scope.pwd1;
$scope.pass = "vp";
if(pwd == undefined || pwd1 == undefined) {
$scope.xin.push("密码不能为空");
}
if(pwd.length <= 6 || pwd1.length <= 6) {
$scope.xin.push("密码长度不能小于六位")
}
if(pwd != pwd1) {
$scope.xin.push("输入两次密码不同")
}
$scope.xin.push("密码长度不能小于六位")
}
if(pwd != pwd1) {
$scope.xin.push("输入两次密码不同")
}
} else if(aa == "点击时显示效果") {
$scope.hi = true;
$scope.pass = "vp";
}
}
$scope.cli = function() {
var pwd = $scope.pwd;
var pwd1 = $scope.pwd1;
$scope.xin = [];
if(pwd == undefined || pwd1 == undefined) {
$scope.xin.push("密码不能为空");
}
if(pwd.length <= 6 || pwd1.length <= 6) {
$scope.xin.push("密码长度不能小于六位")
}
if(pwd != pwd1) {
$scope.xin.push("输入两次密码不同")
}
$scope.hi = false;
}
})
</script>
</body>
$scope.hi = true;
$scope.pass = "vp";
}
}
$scope.cli = function() {
var pwd = $scope.pwd;
var pwd1 = $scope.pwd1;
$scope.xin = [];
if(pwd == undefined || pwd1 == undefined) {
$scope.xin.push("密码不能为空");
}
if(pwd.length <= 6 || pwd1.length <= 6) {
$scope.xin.push("密码长度不能小于六位")
}
if(pwd != pwd1) {
$scope.xin.push("输入两次密码不同")
}
$scope.hi = false;
}
})
</script>
</body>
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