js时间格式化 Tue Apr 14 15:33:44 CST 2015 转成2015-04-14
推荐回答（1个）
第一种方法
自定义函数
//date 是一个 Date实例
format(date){
return date.getFullYear()+"-"+(date.getMonth()+1)+"-"+date.getDay();
}
第二种
修改Date原形函数 因为Date的输出函数比较多 我们就拿toLocaleDateString()方法来重写
代码如下：
Date.prototype.toLocaleDateString = function(DatePattern){
if(/yyyy.MM.dd/.test(DatePattern)){
DatePattern = DatePattern.replace("yyyy",this.getFullYear()).replace("MM",this.getMonth()+1).replace("dd",this.getDay());
return DatePattern;
}
return this.toLocaleString();
};
这里你可以以一个时间格式作为参数：
var date = new Date();
var str = date.toLocaleDateString("yyyy-MM-dd");//返回值为格式化之后的日期
当然 并不能很全的格式化 ，这里也只是提供思路。
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