Javascript AngularJS ng选项是否可能具有可变数量的ng模型?
我有一个标签,选择和按钮公式。问题是这一部分应该是可变的,因此应该可以根据需要多次添加这一行:Javascript AngularJS ng选项是否可能具有可变数量的ng模型?,javascript,angularjs,Javascript,Angularjs,我有一个标签,选择和按钮公式。问题是这一部分应该是可变的,因此应该可以根据需要多次添加这一行: <div class="form-group" ng-repeat="cLine in cLines"> <label class="col-xs-6 control-label">{{cLine.cName}}</label> <div class="col-xs-6"> <div class="input-g
<div class="form-group" ng-repeat="cLine in cLines">
<label class="col-xs-6 control-label">{{cLine.cName}}</label>
<div class="col-xs-6">
<div class="input-group">
<select ng-model="<!-- first try: -->cLine.cColor for cLine in cLines" class="form-control" id='polylineColor' ng-options="color.name for color in colors"></select>
<span class="btn btn-default input-group-addon" style="background-color:white;" ng-click="addNewObject()">
+
</span>
</div>
</div>
</div>
因此,通常带有“selectedColor..”的解决方案无法工作。正如上面可以看到的,我试图将X selects/ng选项的变量ng模型链接到$scope.cLines.cColor,但不幸的是,这不起作用
有人能帮忙吗?或者可能吗?对所选颜色使用am数组。每个索引都将与cLines数组匹配,因此易于操作 //template.js
<div class="form-group" ng-repeat="cLine in cLines">
<label class="col-xs-6 control-label">{{cLine.cName}}</label>
<div class="col-xs-6">
<div class="input-group">
<select ng-model="selecteColors[$index]" class="form-control" id='polylineColor' ng-options="color.name for color in colors"></select>
<span class="btn btn-default input-group-addon" style="background-color:white;" ng-click="addNewObject()">
+
</span>
</div>
</div>
</div>
{{cLine.cName}
+
//controller.js
$scope.cLines = [
{ id: 1, cColor: "red", cName: "Line 1" },
{ id: 2, cColor: "red", cName: "Line 2" },
{ id: 3, cColor: "red", cName: "Line 3" }
];
$scope.cColor = 0;
$scope.colors = [ {name: "red"}, {name: "blue"}, {name: "pink"}];
$scope.selecteColors = (function () {
var defaultColors = [];
for (var i = 0; i < $scope.clines.length; i++) {
defaultColors.push($scope.colors[0].name);
}
return defaultColors;
})();
$scope.cLines=[
{id:1,cColor:“red”,cName:“Line 1”},
{id:2,cColor:“red”,cName:“Line 2”},
{id:3,cColor:“红色”,cName:“第3行”}
];
$scope.cColor=0;
$scope.colors=[{name:“red”},{name:“blue”},{name:“pink”}];
$scope.selecteColors=(函数(){
var defaultColors=[];
对于(变量i=0;i<$scope.clines.length;i++){
defaultColors.push($scope.colors[0].name);
}
返回默认颜色;
})();
对所选颜色使用am数组。每个索引都将与cLines数组匹配,因此易于操作
//template.js
<div class="form-group" ng-repeat="cLine in cLines">
<label class="col-xs-6 control-label">{{cLine.cName}}</label>
<div class="col-xs-6">
<div class="input-group">
<select ng-model="selecteColors[$index]" class="form-control" id='polylineColor' ng-options="color.name for color in colors"></select>
<span class="btn btn-default input-group-addon" style="background-color:white;" ng-click="addNewObject()">
+
</span>
</div>
</div>
</div>
{{cLine.cName}
+
//controller.js
$scope.cLines = [
{ id: 1, cColor: "red", cName: "Line 1" },
{ id: 2, cColor: "red", cName: "Line 2" },
{ id: 3, cColor: "red", cName: "Line 3" }
];
$scope.cColor = 0;
$scope.colors = [ {name: "red"}, {name: "blue"}, {name: "pink"}];
$scope.selecteColors = (function () {
var defaultColors = [];
for (var i = 0; i < $scope.clines.length; i++) {
defaultColors.push($scope.colors[0].name);
}
return defaultColors;
})();
$scope.cLines=[
{id:1,cColor:“red”,cName:“Line 1”},
{id:2,cColor:“red”,cName:“Line 2”},
{id:3,cColor:“红色”,cName:“第3行”}
];
$scope.cColor=0;
$scope.colors=[{name:“red”},{name:“blue”},{name:“pink”}];
$scope.selecteColors=(函数(){
var defaultColors=[];
对于(变量i=0;i<$scope.clines.length;i++){
defaultColors.push($scope.colors[0].name);
}
返回默认颜色;
})();
对所选颜色使用am数组。每个索引都将与cLines数组匹配,因此易于操作
//template.js
<div class="form-group" ng-repeat="cLine in cLines">
<label class="col-xs-6 control-label">{{cLine.cName}}</label>
<div class="col-xs-6">
<div class="input-group">
<select ng-model="selecteColors[$index]" class="form-control" id='polylineColor' ng-options="color.name for color in colors"></select>
<span class="btn btn-default input-group-addon" style="background-color:white;" ng-click="addNewObject()">
+
</span>
</div>
</div>
</div>
{{cLine.cName}
+
//controller.js
$scope.cLines = [
{ id: 1, cColor: "red", cName: "Line 1" },
{ id: 2, cColor: "red", cName: "Line 2" },
{ id: 3, cColor: "red", cName: "Line 3" }
];
$scope.cColor = 0;
$scope.colors = [ {name: "red"}, {name: "blue"}, {name: "pink"}];
$scope.selecteColors = (function () {
var defaultColors = [];
for (var i = 0; i < $scope.clines.length; i++) {
defaultColors.push($scope.colors[0].name);
}
return defaultColors;
})();
$scope.cLines=[
{id:1,cColor:“red”,cName:“Line 1”},
{id:2,cColor:“red”,cName:“Line 2”},
{id:3,cColor:“红色”,cName:“第3行”}
];
$scope.cColor=0;
$scope.colors=[{name:“red”},{name:“blue”},{name:“pink”}];
$scope.selecteColors=(函数(){
var defaultColors=[];
对于(变量i=0;i<$scope.clines.length;i++){
defaultColors.push($scope.colors[0].name);
}
返回默认颜色;
})();
对所选颜色使用am数组。每个索引都将与cLines数组匹配,因此易于操作
//template.js
<div class="form-group" ng-repeat="cLine in cLines">
<label class="col-xs-6 control-label">{{cLine.cName}}</label>
<div class="col-xs-6">
<div class="input-group">
<select ng-model="selecteColors[$index]" class="form-control" id='polylineColor' ng-options="color.name for color in colors"></select>
<span class="btn btn-default input-group-addon" style="background-color:white;" ng-click="addNewObject()">
+
</span>
</div>
</div>
</div>
{{cLine.cName}
+
//controller.js
$scope.cLines = [
{ id: 1, cColor: "red", cName: "Line 1" },
{ id: 2, cColor: "red", cName: "Line 2" },
{ id: 3, cColor: "red", cName: "Line 3" }
];
$scope.cColor = 0;
$scope.colors = [ {name: "red"}, {name: "blue"}, {name: "pink"}];
$scope.selecteColors = (function () {
var defaultColors = [];
for (var i = 0; i < $scope.clines.length; i++) {
defaultColors.push($scope.colors[0].name);
}
return defaultColors;
})();
$scope.cLines=[
{id:1,cColor:“red”,cName:“Line 1”},
{id:2,cColor:“red”,cName:“Line 2”},
{id:3,cColor:“红色”,cName:“第3行”}
];
$scope.cColor=0;
$scope.colors=[{name:“red”},{name:“blue”},{name:“pink”}];
$scope.selecteColors=(函数(){
var defaultColors=[];
对于(变量i=0;i<$scope.clines.length;i++){
defaultColors.push($scope.colors[0].name);
}
返回默认颜色;
})();
将您的行设置为此模式
$scope.cLines = [
{ id: 1, cColor: "red", cName: "Line 1" ,
colors:$scope.colors },
{ id: 2, cColor: "red", cName: "Line 2" ,
colors:$scope.colors },
{ id: 3, cColor: "red", cName: "Line 3",
colors:$scope.colors }
];
并确保在addNewObject()中添加行时复制颜色
数组的值。
同时将选择更改为
<div class="col-xs-6">
<div class="input-group">
<select ng-model="cLine.cColor" class="form-control" id='polylineColor' ng-options="color.name for color in cLine.colors"></select>
<span class="btn btn-default input-group-addon" style="background-color:white;" ng-click="addNewObject()">
+
</span>
</div>
</div>
+
将您的行设置为此模式
$scope.cLines = [
{ id: 1, cColor: "red", cName: "Line 1" ,
colors:$scope.colors },
{ id: 2, cColor: "red", cName: "Line 2" ,
colors:$scope.colors },
{ id: 3, cColor: "red", cName: "Line 3",
colors:$scope.colors }
];
并确保在addNewObject()中添加行时复制颜色
数组的值。
同时将选择更改为
<div class="col-xs-6">
<div class="input-group">
<select ng-model="cLine.cColor" class="form-control" id='polylineColor' ng-options="color.name for color in cLine.colors"></select>
<span class="btn btn-default input-group-addon" style="background-color:white;" ng-click="addNewObject()">
+
</span>
</div>
</div>
+
将您的行设置为此模式
$scope.cLines = [
{ id: 1, cColor: "red", cName: "Line 1" ,
colors:$scope.colors },
{ id: 2, cColor: "red", cName: "Line 2" ,
colors:$scope.colors },
{ id: 3, cColor: "red", cName: "Line 3",
colors:$scope.colors }
];
并确保在addNewObject()中添加行时复制颜色
数组的值。
同时将选择更改为
<div class="col-xs-6">
<div class="input-group">
<select ng-model="cLine.cColor" class="form-control" id='polylineColor' ng-options="color.name for color in cLine.colors"></select>
<span class="btn btn-default input-group-addon" style="background-color:white;" ng-click="addNewObject()">
+
</span>
</div>
</div>
+
将您的行设置为此模式
$scope.cLines = [
{ id: 1, cColor: "red", cName: "Line 1" ,
colors:$scope.colors },
{ id: 2, cColor: "red", cName: "Line 2" ,
colors:$scope.colors },
{ id: 3, cColor: "red", cName: "Line 3",
colors:$scope.colors }
];
并确保在addNewObject()中添加行时复制颜色
数组的值。
同时将选择更改为
<div class="col-xs-6">
<div class="input-group">
<select ng-model="cLine.cColor" class="form-control" id='polylineColor' ng-options="color.name for color in cLine.colors"></select>
<span class="btn btn-default input-group-addon" style="background-color:white;" ng-click="addNewObject()">
+
</span>
</div>
</div>
+
我建议将新数据推送到现有阵列中。
添加新条目时,使用与现有项相同的格式创建对象,以便可以一起处理逻辑
创建新的select时,可以重用ng选项,并且它们不会相互干扰。将所选选项保存到数据对象本身中
$scope.add = function() {
$scope.clines.push({
id: $scope.clines.length + 1, // assuming the id starts from 1 and not missing any, else you have to generate your own id
cName: $scope.name,
cColor: $scope.color
});
}
对于HTML,您可以重复ng数据数组,并使用cColor本身作为ng模型
<div ng-repeat="data in clines">
{{data.id}}.
{{data.cName}}
<select ng-model='data.cColor' ng-options="color.name as color.name for color in colors"></select>
</div>
{{data.id}。
{{data.cName}
也可以使用单独的ng repeat将新数据放入一个单独的数组中,或者使用相同的ng repeat对数组进行concat处理。我建议将新数据放入现有数组中。 添加新条目时,使用与现有项相同的格式创建对象,以便可以一起处理逻辑 创建新的select时,可以重用ng选项,以及