Javascript AngularJS ng开关,我做错了什么?
我对以下代码中的ng切换情况感到非常失望:Javascript AngularJS ng开关,我做错了什么?,javascript,angularjs,Javascript,Angularjs,我对以下代码中的ng切换情况感到非常失望: <div class="UPLcontent" ng-model="uploadFiles"> <ul class="UPLfiles" ng-repeat="file in uploadFiles track by $index"> <li class="UPLicon"><i class="{{file.type | typeIcon }}"></i></li
<div class="UPLcontent" ng-model="uploadFiles">
<ul class="UPLfiles" ng-repeat="file in uploadFiles track by $index">
<li class="UPLicon"><i class="{{file.type | typeIcon }}"></i></li>
<li class="UPLinfo"><span>{{file.name | html}}</span><span>{{file.size | fileSize}}</span></li>
<li class="UPLtool" ng-switch on="toolActionStage" >
<i class="fi-x-circle" ng-click="removeFromUploadList($index)" ng-switch-default="delete"></i>
<div ng-switch-when="progress">
<div ang:round:progress data-round-progress-model="roundProgressData"
data-round-progress-width="30"
data-round-progress-height="30"
data-round-progress-outer-circle-width="3"
data-round-progress-inner-circle-width="0"
data-round-progress-outer-circle-radius="10"
data-round-progress-inner-circle-radius="0"
data-round-progress-label-font="0pt Arial"
data-round-progress-outer-circle-background-color="red"
data-round-progress-outer-circle-foreground-color="#67CB8C"
data-round-progress-inner-circle-color="#505769"
data-round-progress-label-color="#67CB8C"
></div>
</div>
</li>
</ul>
</div>
您应该将
ng开关on=“toolActionStage”
替换为ng开关=“toolActionStage”
。据我所知,您现在使用的语法无效。ng switch
创建了一个新的作用域,指令没有正确处理它
通过向post函数添加调试器
,并查看范围
的内容,您可以很容易地看到这一点
如果在不使用ng开关的情况下运行指令
,roundProgressData
按预期位于范围
中
在您的情况下,roundProgressData
可以在范围中找到。$parent
更新2:
我同意tasseKATT的观点:只需使用
ng show
。这是一把工作小提琴:您是否检查了文档以确定它是AngularJS问题还是进度条问题?我检查了,没有抛出错误。。。没有什么!程序条也可以工作。您在哪里可以构建plunker?为什么不使用最简单的方法,不打开,只需ng switch=“toolActionStage”检查变量的值toolActionStage
。。。它可能不是你想象的那样。例如,ng repeat
创建隔离作用域,或者您可以让另一个指令创建子作用域……这是有效的,从检查源代码来看,ng switch=“x”
和ng switch on=“x”之间没有区别
。那么我是否将$parent.roundProgressData传递给指令??如何将调试器添加到post函数@马萨
angular.module('angular.directives-round-progress', []).directive('angRoundProgress', [function () {
var compilationFunction = function (templateElement, templateAttributes, transclude) {
if (templateElement.length === 1) {
var node = templateElement[0];
var width = node.getAttribute('data-round-progress-width') || '400';
var height = node.getAttribute('data-round-progress-height') || '400';
var canvas = document.createElement('canvas');
canvas.setAttribute('width', width);
canvas.setAttribute('height', height);
canvas.setAttribute('data-round-progress-model', node.getAttribute('data-round-progress-model'));
node.parentNode.replaceChild(canvas, node);
var outerCircleWidth = node.getAttribute('data-round-progress-outer-circle-width') || '20';
var innerCircleWidth = node.getAttribute('data-round-progress-inner-circle-width') || '5';
var outerCircleBackgroundColor = node.getAttribute('data-round-progress-outer-circle-background-color') || '#505769';
var outerCircleForegroundColor = node.getAttribute('data-round-progress-outer-circle-foreground-color') || '#12eeb9';
var innerCircleColor = node.getAttribute('data-round-progress-inner-circle-color') || '#505769';
var labelColor = node.getAttribute('data-round-progress-label-color') || '#12eeb9';
var outerCircleRadius = node.getAttribute('data-round-progress-outer-circle-radius') || '100';
var innerCircleRadius = node.getAttribute('data-round-progress-inner-circle-radius') || '70';
var labelFont = node.getAttribute('data-round-progress-label-font') || '50pt Calibri';
return {
pre: function preLink(scope, instanceElement, instanceAttributes, controller) {
var expression = canvas.getAttribute('data-round-progress-model');
scope.$watch(expression, function (newValue, oldValue) {
// Create the content of the canvas
var ctx = canvas.getContext('2d');
ctx.clearRect(0, 0, width, height);
// The "background" circle
var x = width / 2;
var y = height / 2;
ctx.beginPath();
ctx.arc(x, y, parseInt(outerCircleRadius), 0, Math.PI * 2, false);
ctx.lineWidth = parseInt(outerCircleWidth);
ctx.strokeStyle = outerCircleBackgroundColor;
ctx.stroke();
// The inner circle
ctx.beginPath();
ctx.arc(x, y, parseInt(innerCircleRadius), 0, Math.PI * 2, false);
ctx.lineWidth = parseInt(innerCircleWidth);
ctx.strokeStyle = innerCircleColor;
ctx.stroke();
// The inner number
ctx.font = labelFont;
ctx.textAlign = 'center';
ctx.textBaseline = 'middle';
ctx.fillStyle = labelColor;
ctx.fillText(newValue.label + '%', x, y);
// The "foreground" circle
var startAngle = - (Math.PI / 2);
var endAngle = ((Math.PI * 2 ) * newValue.percentage) - (Math.PI / 2);
var anticlockwise = false;
ctx.beginPath();
ctx.arc(x, y, parseInt(outerCircleRadius), startAngle, endAngle, anticlockwise);
ctx.lineWidth = parseInt(outerCircleWidth);
ctx.strokeStyle = outerCircleForegroundColor;
ctx.stroke();
}, true);
},
post: function postLink(scope, instanceElement, instanceAttributes, controller) {}
};
}
};
var roundProgress = {
compile: compilationFunction,
replace: true
};
return roundProgress;
}]);