js 装 13 指南

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1. 剃度颜色计算

公式：

r = start_r  + 是否反转 * (end_r - start_r) / step * N;
g = start_g + 是否反转 * (end_g- start_g) / step * N;
b = start_b  + 是否反转 * (end_b - start_b) / step * N;

可自行修改的默认颜色值：

startColor='rgb(194, 147, 56)';  // 默认开始颜色
endColor='rgb(0, 159, 13)';  // 默认结束颜色

eg:

function getColor(num, startColor, endColor) {
  startColor = startColor || 'rgb(194, 147, 56)';
  endColor = endColor || 'rgb(0, 159, 13)';
  var startNum = 0;
  var endNum = 100;
  var s = startColor.replace(/rgb\((.*)\)/, '$1').split(',');
  var ss = [].concat(s);
  var e = endColor.replace(/rgb\((.*)\)/, '$1').split(',');
  var b = [1, 1, 1];

  for(var i=0; i<3; i++) {
    e[i] = parseInt(e[i]);
    s[i] = parseInt(s[i]);
    ss[i] = parseInt(ss[i]);
    if(e[i] < s[i]) {
      b[i] = -1;
      var temp = e[i];
      e[i] = s[i];
      s[i] = temp;
    }
  }
  var step = endNum - startNum;
  var rr = (ss[0] + b[0] * (e[0] - s[0]) / step * num).toFixed(0);
  var gg = (ss[1] + b[1] * (e[1] - s[1]) / step * num).toFixed(0);
  var bb = (ss[2] + b[2] * (e[2] - s[2]) / step * num).toFixed(0);
  return 'rgb('+rr+', '+gg+', '+bb+')';
}

ES6 export:

export function getColor(num, startColor='rgb(194, 147, 56)', endColor = 'rgb(0, 159, 13)') {
  let startNum = 0;
  let endNum = 100;
  let s = startColor.replace(/rgb\((.*)\)/, '$1').split(',');
  let ss = [].concat(s);
  let e = endColor.replace(/rgb\((.*)\)/, '$1').split(',');
  let b = [1, 1, 1];

  for(let i=0; i<3; i++) {
    e[i] = parseInt(e[i]);
    s[i] = parseInt(s[i]);
    ss[i] = parseInt(ss[i]);
    if(e[i] < s[i]) {
      b[i] = -1;
      let temp = e[i];
      e[i] = s[i];
      s[i] = temp;
    }
  }
  let step = endNum - startNum;
  let rr = (ss[0] + b[0] * (e[0] - s[0]) / step * num).toFixed(0);
  let gg = (ss[1] + b[1] * (e[1] - s[1]) / step * num).toFixed(0);
  let bb = (ss[2] + b[2] * (e[2] - s[2]) / step * num).toFixed(0);
  return 'rgb('+rr+', '+gg+', '+bb+')';
}

2. console.log 打印颜色

console.log('%c abc, %c def, %c123', 'color:red', 'background: #333; color: #fff', 'color: blue');

3. 判断身份证号是否合法，并给出合法解

function calc(ssnum) {
  var weight = [ 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2 ];
  var verify = [ '1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2' ];
  var result = {};
  var is_ssnum = false;
  var temp = 0;
  for(var i=0; i<17; i++) {
    var num = parseInt(ssnum[i]);
    temp += (num * weight[i]);
  }
  var verify_num = verify[ temp % 11 ];
  if(verify_num == ssnum[17]) {
    is_ssnum = true;
  } else {
    is_ssnum = false;
    result.right_ssnum = ssnum.replace(/\d$/, verify_num);
  }
  result.is_ssnum = is_ssnum;
  return result;
}

4. 计算身份证中的年龄和性别（需要Moment）

Moment 点我

function calc(ssnum) {
  var ssnum_reg = /^[0-9]{6}(\d{4})(\d{2})(\d{2})\d{2}(\d{1})[\d|x|X]$/;
  var temp = ssnum.match(ssnum_reg);
  
  var age = Moment.duration(Moment().diff(''+temp[1]+'-'+temp[2]+'-'+temp[3])).years();
  var sex = (parseInt(temp[4]) % 2)? 1 : 2;
  console.log(temp[1], temp[2], temp[3], ssnum, age, sex);
  return { sex: sex, age: age };
}

批量处理数组：

function calcList(ssnumList) {
  var list = [];
  for(var i in u) {
    var result = calc(u[i]);
    result.ssnum=u[i];
    list.push(result)
  }
  return list;
}