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How to monitor window.resize in VueJs and how to implement it specifically?
How to monitor window.resize in VueJs and how to implement it specifically?
This article mainly introduces the example of VueJs monitoring window.resize method. Now I share it with you and give it as a reference.
Vuejs itself is an MVVM framework.
But when monitoring events on the window, it often seems powerless.
For example, this time it is window.resize
Well, I also searched Baidu before doing it. I see everyone is worried about this issue.
Question: Today I also encountered such a problem, which is about canvas adaptation. Change the width of the canvas according to the change of the window
Remarks: Important issues should be mentioned three times to solve bugs in the framework. Let’s talk about the framework version first (Vue 2.x, ES6 used here)
Solution:
First step: First define a record width as an attribute in data
data: {
screenWidth: document.body.clientWidth // 这里是给到了一个默认值 （这个很重要）
}Second step: We need to mount the reisze event when vue mounted Its method
mounted () {
const that = this
window.onresize = () => {
return (() => {
window.screenWidth = document.body.clientWidth
that.screenWidth = window.screenWidth
})()
}
}The third step: watch to monitor the change of this attribute value, if it changes, pass the val to this.screenWidth
watch: {
screenWidth (val) {
this.screenWidth = val
}
}The fourth step: Optimize because of frequent triggering The resize function causes the page to become stuck.
watch: {
screenWidth (val) {
if (!this.timer) {
this.screenWidth = val
this.timer = true
let that = this
setTimeout(function () {
// that.screenWidth = that.$store.state.canvasWidth
console.log(that.screenWidth)
that.init()
that.timer = false
}, 400)
}
}
}The above is what I compiled for you. I hope it will be helpful to you in the future.
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