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我正在使用分页将内容分成块（我们有下一个、上一个、当前按钮）。

我想在分页中显示数据（换句话说，我只想在一页中显示 500 个字符）。示例我有 div（有一些数据）我想在分页中显示该数据（下一个，上一个按钮禁用）。如果用户单击第一个按钮，它只显示前 500 个字符（前一个是禁用的），然后如果用户单击下一个按钮，它会显示下一个 500 个字符（前一个是启用）。现在用户可以使用检查下一个或上一个 500 个字符。

单击当前按钮时，它会显示所有内容。当我使用它时，它不显示我使用的 500 个字符 http://jsfiddle.net/naveennsit/aD4EF/5/

alert($("#test").html());
alert($("#test").html().length);
var currentpage = 0;
var str = new Array();
var len = $("#test").html().length;
/*for(var i = 0; var = len; i++){

    str[i] = $("#test").html().substr(0, 500);
}*/

$("#first").click(function () {
    alert("first");
    var text = $("#test").html().substr(0, 500);
    alert(text);
    $("#test").empty();
    $("#test").val(text); // First time it is not working ?

});
$("#nxt").click(function () {
    alert("nxt");
});

$("#pre").click(function () {
    alert("pre");
});
4

1 回答 1

1

这是您的代码的工作实现。

它使用正则表达式将文本拆分为 500 个字符的块（实际上，它会在每 500 个字符后找到下一个句号以在句子末尾拆分）。

然后它用div.

然后这些 div 会被隐藏和显示，具体取决于哪个 div 处于活动状态。

按钮使用 jQuery 遍历函数first(), last(), next(),遍历 div prev()。

Javascript

var contentBlocks = $('#content').text().replace(/.{500}\S*\.\s+/g, '$&@').split(/\.\s+@/);
var contentBlocksLength = contentBlocks.length;
$('#content').html('');

$.each(contentBlocks, function( index, value ) {
    $('#content').append($('<div class="textBlock">' + value + ((index != contentBlocksLength - 1) ? '.' : '') + '</div>'));
});

$('#content .textBlock').first().addClass('active');

$('#first').on('click', function () {
    $('#content .textBlock.active').removeClass('active');
    $('#content .textBlock').first().addClass('active');
});

$('#next').on('click', function () {
    if (!$('#content .textBlock.active').is(':last-child')) {
        var $nextTextBlock = $('#content .textBlock.active').next('.textBlock');
        $('#content .textBlock.active').removeClass('active');
        $nextTextBlock.addClass('active');
    }
});

$('#previous').on('click', function () {
    if (!$('#content .textBlock.active').is(':first-child')) {
        var $previousTextBlock = $('#content .textBlock.active').prev('.textBlock');
        $('#content .textBlock.active').removeClass('active');
        $previousTextBlock.addClass('active');
    }
});

$('#last').on('click', function () {
    $('#content .textBlock.active').removeClass('active');
    $('#content .textBlock').last().addClass('active');
});

$('#all').on('click', function () {
    $('#content .textBlock').addClass('active');
});

CSS

#content .textBlock {
    display: none;
}
#content .textBlock.active {
    display: block;
}

HTML

<button id="first">First</button>
<button id="previous">Previous</button>
<button id="next">Next</button>
<button id="last">Last</button>
<button id="all">All</button>
<div id="content">Ricky Thomas Ponting, AO (born 19 December 1974), nicknamed Punter, is an Australian cricketer, and former captain of the Australia national cricket team between 2004 and 2011 in Test cricket and 2002 and 2011 in One Day International cricket. He is a specialist right-handed batsman, slips and close catching fielder, as well as a very occasional bowler. He represents the Tasmanian Tigers in Australian domestic cricket, the Hobart Hurricanes in the Big Bash League, and played in the Indian Premier League with the Kolkata Knight Riders in 2008. He is widely considered by many to be one of the best batsmen of the modern era, along with Sachin Tendulkar of India and Brian Lara of the West Indies. On 1 December 2006, he reached the highest rating achieved by a Test batsman in the last 50 years. Ponting made his first-class debut for Tasmania in November 1992, when just 17 years and 337 days old, becoming the youngest Tasmanian to play in a Sheffield Shield match. However, he had to wait until 1995 before making his One Day International (ODI) debut, during a quadrangular tournament in New Zealand in a match against South Africa. His Test debut followed shortly after, when selected for the first Test of the 1995 home series against Sri Lanka in Perth, in which he scored 96. He lost his place in the national team several times in the period before early-1999, due to lack of form and discipline, before becoming One Day International captain in early-2002 and Test captain in early-2004. After being involved in over 160 Tests and 370 ODIs, Ponting is Australia's leading run-scorer in Test and ODI cricket. He is one of only four players (along with Sachin Tendulkar, Rahul Dravid and Jacques Kallis) in history to have scored 13,000 Test runs. Statistically, he is one of the most successful captains of all time, with 48 victories in 77 Tests between 2004 and 31 December 2010, while as a player he is also the only cricketer in history to be involved in 100 Test victories.[1] On 29 November 2012 Ponting announced his retirement from Test cricket, the day before he would play in the Perth Test against South Africa. This was his 168th and last Test appearance,[2] equalling the Australian record held by Steve Waugh.[3][4] Ricky Ponting retired on 3 December 2012 with a Test batting average of 51.85.[5] He continued to play cricket around the world. In February 2013 it was announced that he would be captaining the Mumbai Indians team in the Indian Premier League.[6] and in March 2013 he was announced as the first international franchise player for the Caribbean Premier League.[7] Later that month it was revealed by Ponting that this would be his last season playing cricket, as at the end of the competition he would be retiring from all forms of the game.[8] In his final first class innings for Surrey against Notts he hit an unbeaten 169 bringing up a total of 82 first class 100s in an illustrious county career.</div>

演示

于 2013-10-22T04:59:12.220 回答