js 加载 Jstest111 首字母大写
import "./Js_test.js" as Jstest111
1.js 在程序启动时调用需要使用Component.onCompleted:程序会在qml环境搭建完成后执行
???????Rectangle{ ???????????id:rect2; ???????????width: 100; ???????????height: 100; ???????????function startup(){ ???????????????console.log("xxxdddx"); ???????????} ???????????Component.onCompleted: startup(); ???????}2.动态创建对象
???Component.onCompleted: { ???????var component = Qt.createComponent("SelfDestoryingRect.qml"); ???????for(var i=0; i < 5; i++) ???????{ ???????????var object1 = component.createObject(container); ???????????object1.x = (object1.width + 10) * i; ???????} ???}动态删除对象（SelfDestoryingRect.qml），只有动态创建的对象才能删除
import QtQuick 2.0Rectangle{ ???id:rect1; ???width: 100; ???height: 100; ???color: "red"; ???NumberAnimation on opacity { ???????to:0; ???????duration: 1000; ???????onRunningChanged: { ???????????if(!running) ???????????{ ???????????????console.log("Destroying"); ???????????????rect1.destroy(); ???????????} ???????} ???}}3.qml 共享js
import QtQuick 2.9import QtQuick.Window 2.2Window { ???visible: true ???width: 640 ???height: 480 ???title: qsTr("Hello World") ???Calculator{ ???????x:10; ???????y:20; ???????input: 2; ???} ???Calculator{ ???????x:40; ???????y:50; ???????input: 3; ???}}Calculator.qml
import QtQuick 2.0import "./factorial.js" as FactorialCalculatorText { ???id: text1; ???property int input: 17; ???text: qsTr("text"+input+ "is" + FactorialCalculator.factorial(input)+"/***=*/"+ FactorialCalculator.factiorialCallCount());}factorial.js
.pragma libraryvar factorialCount = 0;function factorial(a) { ???a = parseInt(a); ???if(a > 0) ???{ ???????console.log(a); ???????return a * factorial(a-1); ???} ???console.log("factorialCount:"+factorialCount); ???factorialCount +=1; ???return 1;}function factiorialCallCount(){ ???console.log("factorialCount():"+factorialCount); ???return factorialCount;}运行结果
qml: 3
qml: 2
qml: 1
qml: factorialCount:0
qml: factorialCount():1
qml: 2
qml: 1
qml: factorialCount:1
qml: factorialCount():2
先执行3再执行2 栈先进后出？？？？
importQtQuick2.0
import"./factorial.js"asFactorialCalculator
Text{id:text1;
propertyintinput:17;
text:qsTr("text"+input+"is"+FactorialCalculator.factorial(input)+"/***=*/"+FactorialCalculator.factiorialCallCount());}
qml js
原文地址：https://www.cnblogs.com/CQbk/p/9519143.html