WeChat applet converts px value to rpx value and rpx value to px value

Need to get the window width first

onLoad: function (options) {
    
    
	wx.getSystemInfo({
    
    
	    success: (result) => {
    
    
	        console.log(result)
	        this.windowWidth = result.windowWidth
	    },
	    fail: (err) => {
    
    
	        console.log(err)
	    }
	})
}

Method of converting px value to rpx value (v_px is the px value to be converted)

// px转rpx
pxToRpx(v_px) {
    
    
    var onePxToRpx = 750 / this.windowWidth;
    var v_rpx = v_px * onePxToRpx;
    return v_rpx
},

Method of converting rpx value to px value (v_rpx is the rpx value to be converted)

// rpx转px
rpxToPx(v_rpx) {
    
    
    var onePxToRpx = 750 / this.windowWidth;
    var v_px = v_rpx / onePxToRpx;
    return v_px
},