vant-weapp/lib/mixins/touch.js
2019-04-03 10:21:53 +08:00

24 lines
855 B
JavaScript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.touch = Behavior({
methods: {
touchStart: function (event) {
this.direction = '';
this.deltaX = 0;
this.deltaY = 0;
this.offsetX = 0;
this.offsetY = 0;
this.startX = event.touches[0].clientX;
this.startY = event.touches[0].clientY;
},
touchMove: function (event) {
var touch = event.touches[0];
this.deltaX = touch.clientX - this.startX;
this.deltaY = touch.clientY - this.startY;
this.offsetX = Math.abs(this.deltaX);
this.offsetY = Math.abs(this.deltaY);
this.direction = this.offsetX > this.offsetY ? 'horizontal' : this.offsetX < this.offsetY ? 'vertical' : '';
}
}
});