我正在使用Dojo框架来创建datagrid。页面和网格加载后，选择任何行。单击并长按垂直滚动，您可以看到垂直滚动条向后滚动。此问题仅在第一次出现。我知道，这很奇怪。但我想知道导致这一特定问题的原因。 请尝试使用以下HTML代码
<!DOCTYPE HTML>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Demo: dojox/grid/DataGrid Simple Structure</title>
<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/dojo/1.10.4/dijit/themes/claro/claro.css" media="screen">
<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/dojo/1.10.4/dojo/resources/dojo.css" />
<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/dojo/1.10.4/dojox/grid/resources/claroGrid.css" />
<style>
#grid {
width: 560px;
height: 300px;
}
</style>
</head>
<body class="claro">
<h1>Demo: dojox/grid/DataGrid Simple Structure</h1>
<br/>
<div id="grid"></div>
<!-- load dojo -->
<script src="http://ajax.googleapis.com/ajax/libs/dojo/1.10.4/dojo/dojo.js"></script>
<script>
var gridData = {
"items": [
{
"bats": "R",
"birthDate": "1934-2-5",
"deathDate": null,
"debut": "4/13/1954 0:00:00",
"finalGame": "10/3/1976 0:00:00",
"first": "Hank",
"height": 72.0,
"id": "aaronha01",
"last": "Aaron",
"nameNote": null,
"nickname": "Hammer,Hammerin' Hank,Bad Henry",
"throws": "R",
"total2B": 624,
"total3B": 98,
"totalAB": 12364,
"totalBB": 1402,
"totalCS": 73,
"totalG": 3298,
"totalGAB": 3298,
"totalGIDP": 328,
"totalH": 3771,
"totalHBP": 32,
"totalHR": 755,
"totalIBB": 293,
"totalK": 1383,
"totalR": 2174,
"totalRBI": 2297,
"totalSB": 240,
"totalSF": 121,
"totalSH": 21,
"weight": 180.0
},
{
"bats": "R",
"birthDate": "1887-2-26",
"deathDate": "1950-11-4",
"debut": "4/15/1911 0:00:00",
"finalGame": "5/28/1930 0:00:00",
"first": "Pete",
"height": 73.0,
"id": "alexape01",
"last": "Alexander",
"nameNote": null,
"nickname": "Old Pete",
"throws": "R",
"total2B": 60,
"total3B": 13,
"totalAB": 1810,
"totalBB": 77,
"totalCS": 5,
"totalG": 703,
"totalGAB": 703,
"totalGIDP": null,
"totalH": 378,
"totalHBP": 2,
"totalHR": 11,
"totalIBB": null,
"totalK": 276,
"totalR": 154,
"totalRBI": 163,
"totalSB": 3,
"totalSF": null,
"totalSH": 88,
"weight": 185.0
},
{
"bats": "R",
"birthDate": "1852-4-17",
"deathDate": "1922-4-14",
"debut": "5/6/1871 0:00:00",
"finalGame": "10/3/1897 0:00:00",
"first": "Cap",
"height": 72.0,
"id": "ansonca01",
"last": "Anson",
"nameNote": null,
"nickname": "Pop",
"throws": "R",
"total2B": 581,
"total3B": 142,
"totalAB": 10277,
"totalBB": 983,
"totalCS": 16,
"totalG": 2523,
"totalGAB": 2523,
"totalGIDP": null,
"totalH": 3418,
"totalHBP": 32,
"totalHR": 97,
"totalIBB": null,
"totalK": 302,
"totalR": 1996,
"totalRBI": 2076,
"totalSB": 276,
"totalSF": null,
"totalSH": 27,
"weight": 227.0
},
{
"bats": "R",
"birthDate": "1934-4-29",
"deathDate": null,
"debut": "4/17/1956 0:00:00",
"finalGame": "9/28/1973 0:00:00",
"first": "Luis",
"height": 69.0,
"id": "aparilu01",
"last": "Aparicio",
"nameNote": null,
"nickname": "Little Louie",
"throws": "R",
"total2B": 394,
"total3B": 92,
"totalAB": 10230,
"totalBB": 736,
"totalCS": 136,
"totalG": 2601,
"totalGAB": 2601,
"totalGIDP": 184,
"totalH": 2677,
"totalHBP": 27,
"totalHR": 83,
"totalIBB": 22,
"totalK": 742,
"totalR": 1335,
"totalRBI": 791,
"totalSB": 506,
"totalSF": 76,
"totalSH": 161,
"weight": 160.0
},
{
"bats": "R",
"birthDate": "1907-4-2",
"deathDate": "1991-1-3",
"debut": "9/10/1930 0:00:00",
"finalGame": "10/1/1950 0:00:00",
"first": "Luke",
"height": 70.0,
"id": "applilu01",
"last": "Appling",
"nameNote": null,
"nickname": "Old Aches and Pains,Luscious Luke",
"throws": "R",
"total2B": 440,
"total3B": 102,
"totalAB": 8856,
"totalBB": 1302,
"totalCS": 108,
"totalG": 2422,
"totalGAB": 2422,
"totalGIDP": 129,
"totalH": 2749,
"totalHBP": 11,
"totalHR": 45,
"totalIBB": null,
"totalK": 528,
"totalR": 1319,
"totalRBI": 1116,
"totalSB": 179,
"totalSF": null,
"totalSH": 74,
"weight": 183.0
},
{
"bats": "L",
"birthDate": "1927-3-19",
"deathDate": "1997-9-9",
"debut": "4/20/1948 0:00:00",
"finalGame": "9/30/1962 0:00:00",
"first": "Richie",
"height": 70.0,
"id": "ashburi01",
"last": "Ashburn",
"nameNote": null,
"nickname": "Whitey,Put Put",
"throws": "R",
"total2B": 317,
"total3B": 109,
"totalAB": 8365,
"totalBB": 1198,
"totalCS": 92,
"totalG": 2189,
"totalGAB": 2189,
"totalGIDP": 83,
"totalH": 2574,
"totalHBP": 43,
"totalHR": 29,
"totalIBB": 25,
"totalK": 571,
"totalR": 1322,
"totalRBI": 586,
"totalSB": 234,
"totalSF": 18,
"totalSH": 112,
"weight": 170.0
},
{
"bats": "L",
"birthDate": "1902-5-21",
"deathDate": "1983-8-16",
"debut": "4/16/1929 0:00:00",
"finalGame": "4/25/1941 0:00:00",
"first": "Earl",
"height": 69.0,
"id": "averiea01",
"last": "Averill",
"nameNote": null,
"nickname": "Rock,The Earl of Snohomish",
"throws": "R",
"total2B": 401,
"total3B": 128,
"totalAB": 6353,
"totalBB": 774,
"totalCS": 57,
"totalG": 1668,
"totalGAB": 1668,
"totalGIDP": 7,
"totalH": 2019,
"totalHBP": 33,
"totalHR": 238,
"totalIBB": null,
"totalK": 518,
"totalR": 1224,
"totalRBI": 1164,
"totalSB": 70,
"totalSF": null,
"totalSH": 55,
"weight": 172.0
},
{
"bats": "L",
"birthDate": "1886-3-13",
"deathDate": "1963-6-28",
"debut": "9/21/1908 0:00:00",
"finalGame": "9/29/1922 0:00:00",
"first": "Frank",
"height": 71.0,
"id": "bakerfr01",
"last": "Baker",
"nameNote": null,
"nickname": "Home Run",
"throws": "R",
"total2B": 315,
"total3B": 103,
"totalAB": 5984,
"totalBB": 473,
"totalCS": 28,
"totalG": 1575,
"totalGAB": 1575,
"totalGIDP": null,
"totalH": 1838,
"totalHBP": 50,
"totalHR": 96,
"totalIBB": null,
"totalK": 182,
"totalR": 887,
"totalRBI": 987,
"totalSB": 235,
"totalSF": null,
"totalSH": 153,
"weight": 173.0
},
{
"bats": "B",
"birthDate": "1891-4-20",
"deathDate": "1972-10-9",
"debut": "4/14/1915 0:00:00",
"finalGame": "5/31/1930 0:00:00",
"first": "Dave",
"height": 69.0,
"id": "bancrda01",
"last": "Bancroft",
"nameNote": null,
"nickname": "Beauty",
"throws": "R",
"total2B": 320,
"total3B": 77,
"totalAB": 7182,
"totalBB": 827,
"totalCS": 75,
"totalG": 1913,
"totalGAB": 1913,
"totalGIDP": null,
"totalH": 2004,
"totalHBP": 23,
"totalHR": 32,
"totalIBB": null,
"totalK": 487,
"totalR": 1048,
"totalRBI": 591,
"totalSB": 145,
"totalSF": null,
"totalSH": 212,
"weight": 160.0
},
{
"bats": "R",
"birthDate": "1931-1-31",
"deathDate": null,
"debut": "9/17/1953 0:00:00",
"finalGame": "9/26/1971 0:00:00",
"first": "Ernie",
"height": 73.0,
"id": "bankser01",
"last": "Banks",
"nameNote": null,
"nickname": "Mr. Cub",
"throws": "R",
"total2B": 407,
"total3B": 90,
"totalAB": 9421,
"totalBB": 763,
"totalCS": 53,
"totalG": 2528,
"totalGAB": 2528,
"totalGIDP": 229,
"totalH": 2583,
"totalHBP": 70,
"totalHR": 512,
"totalIBB": 198,
"totalK": 1236,
"totalR": 1305,
"totalRBI": 1636,
"totalSB": 50,
"totalSF": 96,
"totalSH": 45,
"weight": 180.0
},
{
"bats": "L",
"birthDate": "1867-8-4",
"deathDate": "1918-6-25",
"debut": "6/20/1888 0:00:00",
"finalGame": "6/15/1907 0:00:00",
"first": "Jake",
"height": 70.0,
"id": "becklja01",
"last": "Beckley",
"nameNote": null,
"nickname": "Eagle Eye",
"throws": "L",
"total2B": 473,
"total3B": 243,
"totalAB": 9526,
"totalBB": 616,
"totalCS": null,
"totalG": 2386,
"totalGAB": 2386,
"totalGIDP": null,
"totalH": 2930,
"totalHBP": 183,
"totalHR": 86,
"totalIBB": null,
"totalK": 270,
"totalR": 1600,
"totalRBI": 1575,
"totalSB": 315,
"totalSF": null,
"totalSH": 145,
"weight": 200.0
},
{
"bats": "R",
"birthDate": "1947-12-7",
"deathDate": null,
"debut": "8/28/1967 0:00:00",
"finalGame": "9/29/1983 0:00:00",
"first": "Johnny",
"height": 73.0,
"id": "benchjo01",
"last": "Bench",
"nameNote": null,
"nickname": "Little General",
"throws": "R",
"total2B": 381,
"total3B": 24,
"totalAB": 7658,
"totalBB": 891,
"totalCS": 43,
"totalG": 2158,
"totalGAB": 2158,
"totalGIDP": 201,
"totalH": 2048,
"totalHBP": 19,
"totalHR": 389,
"totalIBB": 135,
"totalK": 1278,
"totalR": 1091,
"totalRBI": 1376,
"totalSB": 68,
"totalSF": 90,
"totalSH": 11,
"weight": 197.0
},
{
"bats": "R",
"birthDate": "1884-5-5",
"deathDate": "1954-5-22",
"debut": "4/20/1903 0:00:00",
"finalGame": "7/21/1925 0:00:00",
"first": "Chief",
"height": 74.0,
"id": "bendech01",
"last": "Bender",
"nameNote": null,
"nickname": null,
"throws": "R",
"total2B": 40,
"total3B": 10,
"totalAB": 1147,
"totalBB": 75,
"totalCS": 0,
"totalG": 507,
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"totalGIDP": 0,
"totalH": 243,
"totalHBP": 10,
"totalHR": 6,
"totalIBB": 0,
"totalK": 48,
"totalR": 102,
"totalRBI": 116,
"totalSB": 20,
"totalSF": 0,
"totalSH": 42,
"weight": 185.0
},
{
"bats": "L",
"birthDate": "1925-5-12",
"deathDate": null,
"debut": "9/22/1946 0:00:00",
"finalGame": "5/9/1965 0:00:00",
"first": "Yogi",
"height": 67.0,
"id": "berrayo01",
"last": "Berra",
"nameNote": null,
"nickname": null,
"throws": "R",
"total2B": 321,
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"totalAB": 7555,
"totalBB": 704,
"totalCS": 26,
"totalG": 2120,
"totalGAB": 2120,
"totalGIDP": 146,
"totalH": 2150,
"totalHBP": 52,
"totalHR": 358,
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"totalK": 414,
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},
{
"bats": "L",
"birthDate": "1958-6-15",
"deathDate": null,
"debut": "4/10/1982 0:00:00",
"finalGame": "8/27/1999 0:00:00",
"first": "Wade",
"height": 74.0,
"id": "boggswa01",
"last": "Boggs",
"nameNote": null,
"nickname": null,
"throws": "R",
"total2B": 578,
"total3B": 61,
"totalAB": 9180,
"totalBB": 1412,
"totalCS": 35,
"totalG": 2440,
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"totalH": 3010,
"totalHBP": 23,
"totalHR": 118,
"totalIBB": 180,
"totalK": 745,
"totalR": 1513,
"totalRBI": 1014,
"totalSB": 24,
"totalSF": 96,
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"weight": 190.0
},
{
"bats": "L",
"birthDate": "1900-4-23",
"deathDate": "1959-12-11",
"debut": "8/18/1922 0:00:00",
"finalGame": "9/16/1937 0:00:00",
"first": "Jim",
"height": 72.0,
"id": "bottoji01",
"last": "Bottomley",
"nameNote": null,
"nickname": "Sunny Jim",
"throws": "L",
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"total3B": 151,
"totalAB": 7471,
"totalBB": 664,
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"totalSF": null,
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},
{
"bats": "R",
"birthDate": "1917-7-17",
"deathDate": "2001-8-10",
"debut": "9/9/1938 0:00:00",
"finalGame": "8/24/1952 0:00:00",
"first": "Lou",
"height": 71.0,
"id": "boudrlo01",
"last": "Boudreau",
"nameNote": null,
"nickname": "Old Shufflefoot,Handsome Lou",
"throws": "R",
"total2B": 385,
"total3B": 66,
"totalAB": 6029,
"totalBB": 796,
"totalCS": 50,
"totalG": 1646,
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"totalR": 861,
"totalRBI": 789,
"totalSB": 51,
"totalSF": null,
"totalSH": 164,
"weight": 185.0
},
{
"bats": "R",
"birthDate": "1879-6-11",
"deathDate": "1944-12-4",
"debut": "8/27/1897 0:00:00",
"finalGame": "10/3/1915 0:00:00",
"first": "Roger",
"height": 69.0,
"id": "bresnro01",
"last": "Bresnahan",
"nameNote": null,
"nickname": "The Duke Of Tralee",
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"weight": 200.0
},
{
"bats": "L",
"birthDate": "1953-5-15",
"deathDate": null,
"debut": "8/2/1973 0:00:00",
"finalGame": "10/3/1993 0:00:00",
"first": "George",
"height": 72.0,
"id": "brettge01",
"last": "Brett",
"nameNote": null,
"nickname": "Mullet",
"throws": "R",
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"total3B": 137,
"totalAB": 10349,
"totalBB": 1096,
"totalCS": 97,
"totalG": 2707,
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"totalH": 3154,
"totalHBP": 33,
"totalHR": 317,
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"totalK": 908,
"totalR": 1583,
"totalRBI": 1595,
"totalSB": 201,
"totalSF": 120,
"totalSH": 26,
"weight": 185.0
},
{
"bats": "L",
"birthDate": "1939-6-18",
"deathDate": null,
"debut": "9/10/1961 0:00:00",
"finalGame": "9/30/1979 0:00:00",
"first": "Lou",
"height": 71.0,
"id": "brocklo01",
"last": "Brock",
"nameNote": null,
"nickname": null,
"throws": "L",
"total2B": 486,
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"totalAB": 10332,
"totalBB": 761,
"totalCS": 307,
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"totalGAB": 2616,
"totalGIDP": 114,
"totalH": 3023,
"totalHBP": 49,
"totalHR": 149,
"totalIBB": 124,
"totalK": 1730,
"totalR": 1610,
"totalRBI": 900,
"totalSB": 938,
"totalSF": 46,
"totalSH": 47,
"weight": 170.0
},
{
"bats": "L",
"birthDate": "1858-5-8",
"deathDate": "1932-8-2",
"debut": "6/23/1879 0:00:00",
"finalGame": "10/4/1904 0:00:00",
"first": "Dan",
"height": 74.0,
"id": "broutda01",
"last": "Brouthers",
"nameNote": null,
"nickname": "Big Dan",
"throws": "L",
"total2B": 460,
"total3B": 205,
"totalAB": 6711,
"totalBB": 840,
"totalCS": null,
"totalG": 1673,
"totalGAB": 1673,
"totalGIDP": null,
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"totalRBI": 1296,
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"weight": 207.0
},
{
"bats": "R",
"birthDate": "1955-9-16",
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"finalGame": "10/3/1993 0:00:00",
"first": "Robin",
"height": 72.0,
"id": "yountro01",
"last": "Yount",
"nameNote": null,
"nickname": null,
"throws": "R",
"total2B": 583,
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},
{
"bats": "L",
"birthDate": "1858-5-8",
"deathDate": "1932-8-2",
"debut": "6/23/1879 0:00:00",
"finalGame": "10/4/1904 0:00:00",
"first": "Dan",
"height": 74.0,
"id": "broutda01",
"last": "Brouthers",
"nameNote": null,
"nickname": "Big Dan",
"throws": "L",
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},
{
"bats": "R",
"birthDate": "1955-9-16",
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"debut": "4/5/1974 0:00:00",
"finalGame": "10/3/1993 0:00:00",
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"id": "yountro01",
"last": "Yount",
"nameNote": null,
"nickname": null,
"throws": "R",
"total2B": 583,
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"totalSB": 271,
"totalSF": 123,
"totalSH": 104,
"weight": 165.0
},
{
"bats": "L",
"birthDate": "1858-5-8",
"deathDate": "1932-8-2",
"debut": "6/23/1879 0:00:00",
"finalGame": "10/4/1904 0:00:00",
"first": "Dan",
"height": 74.0,
"id": "broutda01",
"last": "Brouthers",
"nameNote": null,
"nickname": "Big Dan",
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"totalSH": 2,
"weight": 207.0
},
{
"bats": "R",
"birthDate": "1955-9-16",
"deathDate": null,
"debut": "4/5/1974 0:00:00",
"finalGame": "10/3/1993 0:00:00",
"first": "Robin",
"height": 72.0,
"id": "yountro01",
"last": "Yount",
"nameNote": null,
"nickname": null,
"throws": "R",
"total2B": 583,
"total3B": 126,
"totalAB": 11008,
"totalBB": 966,
"totalCS": 105,
"totalG": 2856,
"totalGAB": 2856,
"totalGIDP": 217,
"totalH": 3142,
"totalHBP": 48,
"totalHR": 251,
"totalIBB": 95,
"totalK": 1350,
"totalR": 1632,
"totalRBI": 1406,
"totalSB": 271,
"totalSF": 123,
"totalSH": 104,
"weight": 165.0
},
{
"bats": "L",
"birthDate": "1858-5-8",
"deathDate": "1932-8-2",
"debut": "6/23/1879 0:00:00",
"finalGame": "10/4/1904 0:00:00",
"first": "Dan",
"height": 74.0,
"id": "broutda01",
"last": "Brouthers",
"nameNote": null,
"nickname": "Big Dan",
"throws": "L",
"total2B": 460,
"total3B": 205,
"totalAB": 6711,
"totalBB": 840,
"totalCS": null,
"totalG": 1673,
"totalGAB": 1673,
"totalGIDP": null,
"totalH": 2296,
"totalHBP": 105,
"totalHR": 106,
"totalIBB": null,
"totalK": 238,
"totalR": 1523,
"totalRBI": 1296,
"totalSB": 256,
"totalSF": null,
"totalSH": 2,
"weight": 207.0
},
{
"bats": "R",
"birthDate": "1955-9-16",
"deathDate": null,
"debut": "4/5/1974 0:00:00",
"finalGame": "10/3/1993 0:00:00",
"first": "Robin",
"height": 72.0,
"id": "yountro01",
"last": "Yount",
"nameNote": null,
"nickname": null,
"throws": "R",
"total2B": 583,
"total3B": 126,
"totalAB": 11008,
"totalBB": 966,
"totalCS": 105,
"totalG": 2856,
"totalGAB": 2856,
"totalGIDP": 217,
"totalH": 3142,
"totalHBP": 48,
"totalHR": 251,
"totalIBB": 95,
"totalK": 1350,
"totalR": 1632,
"totalRBI": 1406,
"totalSB": 271,
"totalSF": 123,
"totalSH": 104,
"weight": 165.0
},
]
};
var grid, dataStore, store;
require([
"dojox/grid/DataGrid",
"dojo/store/Memory",
"dojo/data/ObjectStore",
"dojo/request",
"dojo/domReady!"
], function(DataGrid, Memory, ObjectStore,request){
store = new Memory({ data: gridData.items });
dataStore = new ObjectStore({ objectStore: store });
grid = new DataGrid({
store: dataStore,
query: { id: "*" },
structure: [
{ name: "First Name", field: "first", width: "84px" },
{ name: "Last Name", field: "last", width: "84px" },
{ name: "Bats", field: "bats", width: "70px" },
{ name: "Throws", field: "throws", width: "70px" },
{ name: "G", field: "totalG", width: "60px" },
{ name: "AB", field: "totalAB", width: "60px" },
{ name: "Games as Batter", field: "totalGAB", width: "120px" },
{ name: "R", field: "totalR", width: "60px" },
{ name: "RBI", field: "totalRBI", width: "60px" },
{ name: "BB", field: "totalBB", width: "60px" },
{ name: "K", field: "totalK", width: "60px" },
{ name: "H", field: "totalH", width: "60px" },
{ name: "2B", field: "total2B", width: "60px" },
{ name: "3B", field: "total3B", width: "60px" },
{ name: "HR", field: "totalHR", width: "60px" }
]
});
grid.placeAt("grid");
// since we created this grid programmatically, call startup to render it
//grid.startup();
grid.startup();
//grid.selection.setSelected(0, false);
//grid.selection.clear();
//grid.setScrollTop(10);
/*grid.on('MouseUp',function(event) {
//console.log("mouseup ==>"+grid.scrollTop);
//console.log(document.getElementById("grid").scrollHeight);
grid.setScrollTop(document.getElementById("grid").scrollHeight);
});
grid.on('MouseDown',function(event){
//console.log("mousedown ==>"+grid.scrollTop);
});
*/
});
function getSelectedRows() {
var items = grid.selection.getSelected();
alert(items.length);
}
</script>
<input type="button" value="GetSelectedRows" onclick="getSelectedRows()">
</body>
</html>
答案 0 :(得分：0)
这是因为dojox/grid/DataGrid有infinite scroll，因此，它会在您滚动时对数据进行分页，如果您检查dojox/grid/DataGrid的来源，您会发现它从dojox/grid/_Grid延伸{1}}它包含dojox/grid/_Scroller，_Scroller注册到onscroll函数中domNode的{{1}}事件：
init if(this.scrollboxNode){
this.scrollboxNode.scrollTop = 0;
this.scroll(0);
this.scrollboxNode.onscroll = lang.hitch(this, 'onscroll');
}
函数用于计算要显示的页面
onscroll这是功能的代码，其余功能在onscroll: function(){
this.scroll(this.scrollboxNode.scrollTop);
},
scroll: function(inTop){
this.grid.scrollTop = inTop;
if(this.colCount){
this.startPacify();
this.findPage(inTop);
var h = this.height;
var b = this.getScrollBottom(inTop);
for(var p=this.page, y=this.pageTop; (p<this.pageCount)&&((b<0)||(y<b)); p++){
y += this.needPage(p, y);
}
this.firstVisibleRow = this.getFirstVisibleRow(this.page, this.pageTop, inTop);
this.lastVisibleRow = this.getLastVisibleRow(p - 1, y, b);
// indicates some page size has been updated
if(h != this.height){
this.repositionPages(p-1);
}
this.endPacify();
}
},
和dojox/grid/DataGrid
希望这有助于清除你的想法