我在浏览器上显示xml，我想让它变得漂亮和缩进。在angularjs中有任何可以让用户可读的过滤器或表达式。
HTML
<div class="tab-pane fade" id="tab2default"><pre class="prettyprint lang-xml">{{string}}</pre></div>
ctrl.js
$scope.string = <?xml version="1.0" encoding="UTF-8"?> <bpmndi:BPMNPlane id="BPMNPlane_1" bpmnElement="Process_1"> <bpmndi:BPMNShape id="_BPMNShape_StartEvent_2" bpmnElement="StartEvent_1"></bpmndi:BPMNPlane> </bpmndi:BPMNDiagram> </bpmn2:definitions>