String converted to number
In QML code, if you encounter a string to a number, you can use Number (str) to convert str to a number type
import QtQuick 2.12
import QtQuick.Window 2.12
Window {
visible: true
width: 640
height: 480
title: qsTr("Hello World")
property string testStr: "-100000"
property int testInt: 44
property double testDouble: 11.11
property string testDoubleStr: "22.34432"
Text {
id: intTxt
text: testInt * 2
anchors.top: parent.top
anchors.left: parent.left
width: parent.width
height: 20
}
Text {
id: doubleTxt
text: testDouble
anchors.top: intTxt.bottom
anchors.left: parent.left
width: parent.width
height: 20
}
MouseArea {
anchors.fill: parent
onClicked: {
testInt = Number(testStr)
testDouble = Number(testDoubleStr)
}
}
}
After running the
stand-alone machine, it becomes:
Numbers are converted to strings
In QML code, if you encounter a number to a string, you can use num.toString() to convert the number to a string type
import QtQuick 2.12
import QtQuick.Window 2.12
Window {
visible: true
width: 640
height: 480
title: qsTr("Hello World")
property string testStr: "-100000"
property int testInt: 44
property double testDouble: 11.11
property string testDoubleStr: "22.34432"
Text {
id: intTxt
text: testStr
anchors.top: parent.top
anchors.topMargin: 40
anchors.left: parent.left
width: parent.width
horizontalAlignment: Text.AlignHCenter
height: 20
}
Text {
id: doubleTxt
text: testDoubleStr
anchors.top: intTxt.bottom
anchors.left: parent.left
width: parent.width
horizontalAlignment: Text.AlignHCenter
height: 20
}
MouseArea {
anchors.fill: parent
onClicked: {
testStr = testInt.toString()
testDoubleStr = testDouble.toString()
}
}
}
run
After stand-alone, it becomes:
Reference articles:
[1] Detailed explanation of JavaScript usage in QML (1) ----- Convert string type data to integer data in qml
[2] QML's operation on address-select, get file name, cut