这节的答案是什么啊 跪求
这节的答案是什么啊 跪求
2 回答
<!DOCTYPE html>
<html>
<head>
<title> 事件</title>
<script type="text/javascript">
function count(){
var oTxt1 = document.getElementById("txt1").value;
var oTxt2 = document.getElementById("txt2").value;
var oSlt = document.getElementById("select").value;
var result = "";
switch(oSlt) {
case "+":
result = parseFloat(oTxt1) + parseFloat(oTxt2);
break;
case "-":
result = parseFloat(oTxt1) - parseFloat(oTxt2);
break;
case "*":
result = parseFloat(oTxt1) * parseFloat(oTxt2);
break;
default:
result = parseFloat(oTxt1) / parseFloat(oTxt2);
}
document.getElementById("fruit").value = result;
}
</script>
</head>
<body>
<input type='text' id='txt1' />
<select id='select'>
<option value='+'>+</option>
<option value="-">-</option>
<option value="*">*</option>
<option value="/">/</option>
</select>
<input type='text' id='txt2' />
<input type='button' value=' = ' onclick=count() /> <!--通过 = 按钮来调用创建的函数，得到结果-->
<input type='text' id='fruit' />
</body>
</html>
<!DOCTYPE html>
<html ng-app="myApp">
<head>
<title> 事件</title>
</head>
<body ng-controller="myCtrl">
<input type='text' id='txt1' ng-model="one"/>
<select id='select'>
<option value='+'>+</option>
<option value="-">-</option>
<option value="*">*</option>
<option value="/">/</option>
</select>
<input type='text' id='txt2' ng-model="two"/>
<input type='button' value=' = ' ng-click="count()"/> <!--通过 = 按钮来调用创建的函数，得到结果-->
<input type='text' id='fruit' ng-model="result"/>
</body>
<script type="text/javascript" src="../js/angular.min.js"></script>
<script type="text/javascript">
var app = angular.module('myApp',[]);
app.controller('myCtrl', ['$scope', function($scope){
$scope.count = function(){
var finalResult;
var obj = document.getElementById("select");
var selectedIndex = obj.selectedIndex;
var optionValue = obj.options[selectedIndex].value;
switch(optionValue){
case "+":finalResult = parseInt($scope.one) + parseInt($scope.two);
break;
case "-":finalResult = parseInt($scope.one) - parseInt($scope.two);
break;
case "*":finalResult = parseInt($scope.one) * parseInt($scope.two);
break;
case "/":finalResult = parseInt($scope.one) / parseInt($scope.two);
break;
}
$scope.result = finalResult;
}
}])
</script>
</html>
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