JavaScript自定义函数库

1. 获取当前日期(包含时间)字符串:

// 获取当前时间字符串
function getCurentTime() {
var now = new Date();
var year = now.getFullYear(); //年
var month = now.getMonth() + 1; //月
var day = now.getDate(); //日
var hh = now.getHours(); //时
var mm = now.getMinutes(); //分
var ss = now.getSeconds(); //秒
var clock = year + "-";

if (month < 10) {
clock += "0";
}
clock += month + "-";

if (day < 10) {
clock += "0";
}
clock += day + " ";

if (hh < 10) {
clock += "0";
}
clock += hh + ":";

if (mm < 10) {
clock += '0';
}
clock += mm + ":";

if (ss < 10) {
clock += '0';
}
clock += ss;
return (clock);
}

function isNum(e) {
  var k = window.event ? e.keyCode : e.which;
  if (((k >= 48) && (k <= 57)) || k == 8 || k == 0) {

  // 键盘非字母按键无效
  } else {
    if (window.event) {
      window.event.returnValue = false;
    } else {
      e.preventDefault(); //for firefox
    }
  }
}

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原文地址:https://www.cnblogs.com/maxiaolang/p/4505375.html