// 验证码倒计时
var CountDown = function(options) {
// 初始化配置信息
options = options || {};
// DOM节点
if (typeof options.element === 'string') {
this.element = document.querySelector(options.element);
} else {
this.element = options.element;
}
// 触发事件类型
this.eventType = options.eventType || 'click'; //默认click事件触发
// 间隔时间
this.interval = options.interval || 60; //默认60s间隔
// 原有的文本
this.oldText = this.element.innerText;
// 开始
this.start = function() {
this.element.setAttribute('disabled', 'disabled');
this.timer = window.setInterval(function() {
if (!!this.interval) {
this.count();
} else {
this.end();
}
}.bind(this), 1000);
};
// 计算
this.count = function() {
this.element.innerText = '重新发送(' + this.interval + ')';
this.interval -= 1;
};
// 结束
this.end = function() {
if (!!this.timer) {
window.clearInterval(this.timer);
delete this.timer;
}
this.reset();
};
// 重置
this.reset = function() {
this.element.innerText = this.oldText;
this.element.removeAttribute('disabled');
this.interval = options.interval || 60;
};
// 绑定事件
this.element.addEventListener(this.eventType, this.start.bind(this), false);
};
主要用于移动端