解决方式Vue方式:

您可以使用$once,它只会监听一次事件.

Listen for a custom event,but only once. The listener will be removed once it triggers for the first time.

你只需要将@once添加到@change,如下所示:

export default {

//No Change here

}

检查演示是否在fiddle中.

旧答案:

如果您不想为旋转设置初始值,则可以再增加一个变量:hasRotated以跟踪旋转是否已更改.最初将hasRotated设置为true,一旦旋转已更改,将hasRotated设置为false,如下所示:

export default {

data: {

rotate: 123,hasRotated: false

},methods: {

handleRotate () {

if(this.hasRotated){

this.rotate = this.rotate + this.getRotateAngle(e.clientX,e.clientY)

this.hasRotated = false

}

}

}

}

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