如何跳过NG重复$指数 [英] How to skip $index in ng-repeat
问题描述
考虑以下几点:
<div ng-repeat='quest in quests'>
<div ng-switch on="quest.ui.type">
<div ng-switch-when="ms-select-single" >
<div ms-select-single quest='quest'
quest-num='{{(true)?numInc():return}}'></div>
</div>
<div ng-switch-when="ms-select-multy">
<div ms-select-multy quest='quest'
quest-num='{{(true)?numInc():return}}'></div>
</div>
<div ng-switch-when="ms-date">
<div ms-date quest='quest'
quest-num='{{(true)?numInc():return}}'>{{questNo}}</div>
</div>
<div ng-switch-when="ms-text">
<div ms-text quest='quest'
quest-num='{{(true)?numInc():return}}'>{{questNo}}</div>
</div>
<div ng-switch-when="ms-textarea">
<div ms-textarea quest='quest'
quest-num='{{(true)?numInc():return}}'>{{questNo}}</div>
</div>
<div ng-switch-when="ms-number">
<div ms-number quest='quest'
quest-num='{{(true)?numInc():return}}'>{{questNo}}</div>
</div>
<div ng-switch-when="ms-html">
<div ms-html quest='quest'></div>
</div>
</div>
</div>
应该是什么我真实的陈述在追求-NUM ='{{(真正)numInc():返回}}?>
What should be my true statement in the quest-num='{{(true)?numInc():return}}'>?
我想要实现的是一个增量的模型值conditionaly当说法是正确的,如果这是真的所有的时间程序中断,应该是什么我这里真实的陈述?
What i want to achieve is an increment a model value conditionaly when the statement is true, if it's true all the time the program breaks, what should be my true statement here?
numInc返回模型中的一个NUM值的++,在0首先初始化,并且当它击中它增加的功能,但因为我有NG-开关它增加了太多次,这就是为什么我需要真正的/虚假陈述,我想......
numInc returns a ++ of a num value in the model, initialized first at 0, and when it hits the function it increments, but because i have ng-switch it increments too many times, that's why i need the true/false statement, i think...
推荐答案
我不知道我理解你的问题,但如果你想这样的事情
I'm not sure I understood your question but if you wanted something like this
Label Actual $index value
Question 1 0
1
Question 2 2
Question 3 3
etc...
然后我们可以使用一个指令。这里有一个快速草图
Then we can use a directive. Here's a quick sketch
var app = angular.module('app', []);
app.controller('MainController', function($scope){
$scope.arr = [{name:'John', phone:'555-1276'},
{name:'Mary', phone:'800-BIG-MARY'},
{name:'Mike', phone:'555-4321', countMe:false},
{name:'Adam', phone:'555-5678'},
{name:'Julie', phone:'555-8765'},
{name:'Juliette', phone:'555-5678', countMe:false}]
});
app.directive('conditionalNumberDirective', function(){
var counter = 0;
return {
restrict: 'A',
link: function(scope, el, attr) {
// config what is item and what is coutMe via attrs here
if(scope.$index === 0) {
counter = 1;
}
scope.counter = counter;
if(angular.isDefined(scope.item) && angular.isDefined(scope.item.countMe) && !scope.item.countMe) {
scope.counter = null;
}else {
counter++
}
}
}
});
HTML看起来像
<div ng-controller="MainController">
<input type="text" ng-model="search"/>
<div ng-repeat="item in arr | filter:search" conditional-number-directive>
Index:{{$index}} {{item}} - Label:{{counter}}
</div>
</div>
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