(此处背景图宽:高=1.92)

1.在html中设置两种可选择的类:

<div class="login-container" v-bind:class="[{'cal-backgound-size-width': !calBgImage },{'cal-backgound-size-height' : calBgImage }]">

2.css样式:

宽度自适应:

.cal-backgound-size-width{

background: url('/../../../static/bg.png') no-repeat;

background-size: auto 100%;

}

高度自适应:

.cal-backgound-size-height{

background: url('/../../../static/bg.png') no-repeat;

background-size: 100% auto;

}

3.js控制

mounted() {

this.calBgImage = (document.body.clientWidth / document.body.clientHeight) > 1.92

// 然后监听window的resize事件.在浏览器窗口变化时再设置下背景图高度.

const that = this

window.onresize = function temp() {

that.calBgImage = (document.body.clientWidth / document.body.clientHeight) > 1.92

}

},

转载于:https://my.oschina.net/u/3762697/blog/1806647

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