handsontable-cell features

数据验证：在columns中设置validator，进行同步或异步验证，还可添加beforeValidate, afterValidate函数，allowInvalid：true可以不用验证

var people = [
      {id: 1, name: {first: ‘Joe‘, last: ‘Fabiano‘}, ip: ‘0.0.0.1‘, email: ‘[email protected]‘},
      {id: 2, name: {first: ‘Fred‘, last: ‘Wecler‘}, ip: ‘0.0.0.1‘, email: ‘[email protected]‘},
      {id: 3, name: {first: ‘Steve‘, last: ‘Wilson‘}, ip: ‘0.0.0.1‘, email: ‘[email protected]‘},
      {id: 4, name: {first: ‘Maria‘, last: ‘Fernandez‘}, ip: ‘0.0.0.1‘, email: ‘[email protected]‘},
      {id: 5, name: {first: ‘Pierre‘, last: ‘Barbault‘}, ip: ‘0.0.0.1‘, email: ‘[email protected]‘},
      {id: 6, name: {first: ‘Nancy‘, last: ‘Moore‘}, ip: ‘0.0.0.1‘, email: ‘[email protected]‘},
      {id: 7, name: {first: ‘Barbara‘, last: ‘MacDonald‘}, ip: ‘0.0.0.1‘, email: ‘[email protected]‘},
      {id: 8, name: {first: ‘Wilma‘, last: ‘Williams‘}, ip: ‘0.0.0.1‘, email: ‘[email protected]‘},
      {id: 9, name: {first: ‘Sasha‘, last: ‘Silver‘}, ip: ‘0.0.0.1‘, email: ‘[email protected]‘},
      {id: 10, name: {first: ‘Don‘, last: ‘Pérignon‘}, ip: ‘0.0.0.1‘, email: ‘Don.Pé[email protected]‘},
      {id: 11, name: {first: ‘Aaron‘, last: ‘Kinley‘}, ip: ‘0.0.0.1‘, email: ‘[email protected]‘}
    ],
    example1 = document.getElementById(‘example1‘),
    example1console = document.getElementById(‘example1console‘),
    settings1,
    ipValidatorRegexp,
    emailValidator;

  ipValidatorRegexp = /^(?:\b(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\b|null)$/;
  emailValidator = function (value, callback) {
    setTimeout(function(){　　　 //还能这样验证
      if (/[email protected]+/.test(value)) {
        callback(true);
      }
      else {
        callback(false);
      }
    }, 1000);
  };

  settings1 = {
    data: people,　　//hooks
    beforeChange: function (changes, source) {　　　 //changes是数组，数组的元素也是数组，包含四个属性0:10,1：‘name.last‘,2:‘Kinley‘,3:‘foo‘
      for (var i = changes.length - 1; i >= 0; i--) {
        // gently don‘t accept the word "foo" (remove the change at index i)　　　　 //如果想改为foo，会把这次修改删掉
        if (changes[i][3] === ‘foo‘) {
          changes.splice(i, 1);
        }
        // if any of pasted cells contains the word "nuke", reject the whole paste　　　　 //如果想改为nuke，只是拒绝，而不会删除此次修改
        else if (changes[i][3] === ‘nuke‘) {
          return false;
        }
        // capitalise first letter in column 1 and 2
        else if ((changes[i][1] === ‘name.first‘ || changes[i][1] === ‘name.last‘) && changes[i][3].charAt(0)) {
          changes[i][3] = changes[i][3].charAt(0).toUpperCase() + changes[i][3].slice(1);
        }
      }
    },
    afterChange: function (changes, source) {
      if (source !== ‘loadData‘) {
        example1console.innerText = JSON.stringify(changes);
      }
    },
    colHeaders: [‘ID‘, ‘First name‘, ‘Last name‘, ‘IP‘, ‘E-mail‘],
    columns: [
      {data: ‘id‘, type: ‘numeric‘},
      {data: ‘name.first‘},
      {data: ‘name.last‘},　　　 //给ip加事件处理程序，可以不通过验证
      {data: ‘ip‘, validator: ipValidatorRegexp, allowInvalid: true},
      {data: ‘email‘, validator: emailValidator, allowInvalid: false}
    ]
  };
  var hot = new Handsontable(example1, settings1);