对数组进行字符串搜索不返回任何内容

时间:2015-08-20 19:30:55

标签: javascript jquery html arrays

我有一个公共的信息数据库,我想用jQuery,JavaScript(以及后来的HTML和CSS)重新格式化。我正在尝试使用提供的信息在表格中创建新的组。在这个具体的例子中,我想找到8月份的每个实例出现在一个表中。

我尝试了两种方法来搜索内容,并且都返回一个空数组('[]')。这很令人困惑,因为我可以在控制台中记录内容,但它不会添加到新阵列。

//DETECT ROWS, COLUMNS
var tableArray = [];

$("table#tableTest tr").each(function() {
    var arrayOfThisRow = [];
    var tableData = $(this).find('td');
    if (tableData.length > 0) {
        tableData.each(function() { arrayOfThisRow.push($(this).text()); });
        tableArray.push(arrayOfThisRow);
    }
});

//SAMPLE LOGS
console.log("R1, C5: " + tableArray[4][3]);
console.log("Total row hits: " + tableArray.length);

//CHECK FOR MONTH (AUGUST)

//Using for 
function month() {
    //indices represents matches within var text and will be different for each row. 
    var indices = [];
    //This executes for every row, 0 column.
    for (var i = 0; i < tableArray.length; i++) {
        //text represents the text contents of current position.
        var text = tableArray[i][0];
    //h represents each letter of text.
        for(var h = 0; h < text.length; h++) {
            if (text[h] === "A") {
                // If we find it, add characters up to
                // the length of month to the array
                for(var j = h; j < (month.length + h); j++) {
                    indices.push(text[j]);
                };
            };
        };

        //Log every month (works)
        //console.log(tableArray[i][0]);
    };
    return indices;
};

month("August");

//Alternative method
var indices = [];
var element = "August";
var idx = tableArray.indexOf(element);
while (idx != -1) {
  indices.push(idx);
  idx = tableArray.indexOf(element, idx + 1);
}
console.log(indices);

2 个答案:

答案 0 :(得分:1)

你没有在任何地方使用month()函数的参数。

function month(monthname) {
    var indices = [];
    $.each(tableArray(function(rowNum, row) {
        $.each(row, function(colNum, col) {
            if (col.indexOf(monthname) != -1) {
                indices.push(col);
            }
        });
    });
    return indices;
}

答案 1 :(得分:0)

使用jQuery你也可以这样做:

&#13;
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function month (elem, needle) {
    elem.find("td:contains('"+needle+"')").each(function() {
        console.log(this);
    })
}

month($('table'), "AUGUST");
&#13;
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js"></script>
<table>
    <tr>
        <td>AUGUST</td>
    </tr>
    <tr>
        <td>MAY</td>
    </tr>
    <tr>
        <td>APRIL</td>
    </tr>
    <tr>
        <td>JUNE</td>
    </tr>
    <tr>
        <td>AUGUST</td>
    </tr>
    <tr>
        <td>SEPTEMBER</td>
    </tr>
    <tr>
        <td>AUGUST</td>
    </tr>
    <tr>
        <td>JUNE</td>
    </tr>
    <tr>
        <td>AUGUST</td>
    </tr>
    <tr>
        <td>MAY</td>
    </tr>
</table>
&#13;
&#13;
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