JavaScript仅适用于某些页面

Question

我使用以下javascript来允许我在点击时突出显示tr行

    $(document).ready(function () {
    $('tr').click(function () {
        if(this.style.background == "" || this.style.background =="white") {
            $(this).css('background', '#D3D3D3');
        }
        else {
            $(this).css('background', 'white');
        }
    });
});

$('table tr').click(rowclick)

This works fine here.

但如果我选择this，它就不起作用，我无法理解为什么它使用相同的代码

完整的JavaScript如下

var ie = document.all
var ns = document.getElementById && !ie
function rowclick(e) {
var obj = ns ? e.target : event.srcElement
if (obj.tagName=="TD") {

obj.onblur=function() {

}
}
}

$(document).ready(function () {
    $('tr').click(function () {
        if(this.style.background == "" || this.style.background =="white") {
            $(this).css('background', '#D3D3D3');
        }
        else {
            $(this).css('background', 'white');
        }
    });
});




$('table tr').click(rowclick)

document.onclick=rowclick

      google.load("visualization", "1", {packages:["corechart"]});
      google.setOnLoadCallback(drawChart);



      function drawChart() {




        var data = google.visualization.arrayToDataTable([  <?php echo $data; ?>   ]);



        var data2 = google.visualization.arrayToDataTable([ <?php echo $datagoing; ?>   ]);


        var options = {
          backgroundColor: 'transparent',
            legend: 'none',
            height: '100px',
            width: '100px',
               chartArea: { height :"95%", width:"95%" },

        };

        var options2 = {
          backgroundColor: 'transparent',
            legend: 'none',
            height: '100px',
            width: '100px',
               chartArea: { height :"95%", width:"95%" },
        };


        var chart = new google.visualization.PieChart(document.getElementById('piechart<?php echo $loop ?>'));
        chart.draw(data, options);

        var chart2 = new google.visualization.PieChart(document.getElementById('piechartgoing<?php echo $loop ?>'));
        chart2.draw(data2, options2);

      }