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61 lines
901 B
61 lines
901 B
var polling = {
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//定时器ID
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_interval_id : null,
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_switch : false,
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//关闭
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close : function(){
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clearInterval(this._interval_id);
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this._interval_id = null;
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},
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//暂停
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stop : function(){
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this._switch = false;
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},
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//启动
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start : function(){
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this._switch = true;
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},
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/**
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* 开启
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*
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* @param {Time} ms 毫秒数
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* @param {Function} fn 回调函数
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*/
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run : function(ms, fn){
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if( !ms || typeof ms != 'number'){
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ms = 3000;//默认3秒
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}
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if(!fn || typeof fn != 'function'){
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fn = function(){};
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}
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var _this = this;
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//如果已经存在，则要关闭轮询
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if( _this._interval_id ){
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_this.start();
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return true;
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}
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var i = 0;
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_this._switch = true;
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_this._interval_id = setInterval(function(){
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if( !_this._switch ){
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return false;
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}
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i ++;
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fn(i);
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}, ms);
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return true;
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}
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};
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export default polling;
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