HTML:
<span>{{minute}}:{{second}}</span>
script:
一
二
// 倒计时
num(n) {
return n < 10 ? '0' + n : '' + n
},
timer () {
var _this = this
var time = window.setInterval(function () {
if (_this.seconds === 0 && _this.minutes !== 0) {
_this.seconds = 59
_this.minutes -= 1
} else if (_this.minutes === 0 && _this.seconds === 0) {
_this.seconds = 0
window.clearInterval(time)
} else {
_this.seconds -= 1
}
}, 1000)
}
三
四
mounted() {
this.timer()
},
watch: {
second: {
handler (newVal) {
this.num(newVal)
}
},
minute: {
handler (newVal) {
this.num(newVal)
}
}