javascript - remove event listener in vue - Stack Overflow

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i need to remove the event listener. i'm calling to some method from the function executed within the event listener, so i need to use to es6 syntax. i couldn't use named functions. how can i remove the event listener

methods :
    initCanvas : function(x, y, width, height) {
        //do something
    },
    some_method : function() {
        let svgObjectEl = // some logic will give the object elemenet embedding the svg
        svgObjectEl.addEventListener('load', () => {
            //let x,y,width, height has some value
            // some code here
            this.initCanvas(x, y, width, height);         
        });   
        svgObjectEl.removeEventListener('load', ??);
}

i need to remove the event listener. i'm calling to some method from the function executed within the event listener, so i need to use to es6 syntax. i couldn't use named functions. how can i remove the event listener

methods :
    initCanvas : function(x, y, width, height) {
        //do something
    },
    some_method : function() {
        let svgObjectEl = // some logic will give the object elemenet embedding the svg
        svgObjectEl.addEventListener('load', () => {
            //let x,y,width, height has some value
            // some code here
            this.initCanvas(x, y, width, height);         
        });   
        svgObjectEl.removeEventListener('load', ??);
}

• javascript
• ecmascript-6
• vue.js
• addeventlistener

Share Improve this question Follow edited Dec 5, 2017 at 17:38 Tomonso Ejang asked Dec 1, 2017 at 17:55 Tomonso EjangTomonso Ejang 1,36644 gold badges1616 silver badges2828 bronze badges 4

• 2 You need to store it in a variable. – SLaks Commented Dec 1, 2017 at 17:57
• can you write it out. – Tomonso Ejang Commented Dec 1, 2017 at 18:11
• 1 wouldn't <svg @load.once="listener" ... do it ? – birdspider Commented Dec 1, 2017 at 18:29
• @birdspider No. i had to perform some logic – Tomonso Ejang Commented Dec 1, 2017 at 18:52

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1 Answer 1

Sorted by: Reset to default 2

Something like this maybe?

methods: {
  initCanvas (x, y, width, height) {
    //do something
  },
  some_method() {
    svgObjectEl.options = { x: 12, y: 13, … }
    svgObjectEl.addEventListener('load', this.listener)
  },
  listener(evt) {
    // some code here
    this.initCanvas(evt.target.options)
    svgObjectEl.removeEventListener('load', this.listener)    
  }
}

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