[英]Flot bar “tool-tip” graph with codeigniter
我在我的codeigniter項目中使用了flt條形圖。
我的圖表的工作方式是,我按月計算加入的用戶數,然后按$data
計數回顯到視圖。
問題:當我將鼠標懸停在每個欄上時,如果可能的話,我希望能夠顯示帶有該月計數的引導工具提示 。
腳本在welcome_message視圖上
<script type="text/javascript">
var bar_data = {
data: [
["January", <?php echo $count_jan;?>],
["February", <?php echo $count_feb;?>],
["March", <?php echo $count_mar;?>],
["April", <?php echo $count_apr;?>],
["May", <?php echo $count_may;?>],
["June", <?php echo $count_jun;?>],
["July", <?php echo $count_july;?>],
["August", <?php echo $count_aug;?>],
["September", <?php echo $count_sept;?>],
["October", <?php echo $count_oct;?>],
["November", <?php echo $count_nov;?>],
["December", <?php echo $count_dec;?>]
],
color: "#3c8dbc"
};
$.plot("#bar-chart", [bar_data], {
grid: {
borderWidth: 1,
borderColor: "#f3f3f3",
tickColor: "#f3f3f3"
},
points: {
show: true
},
series: {
bars: {
show: true,
fill: true,
barWidth: 0.4,
align: "center"
}
},
xaxis: {
mode: "categories",
tickLength: 0
}
});
</script>
例
public function count_jan() {
$this->db->where('month_joined_up', 'January');
$query = $this->db->get('user');
if ($query->num_rows() > 0) {
return $query->num_rows();
} else {
return 0;
}
}
調節器
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class Welcome extends CI_Controller {
public function index()
{
$data['count_jan'] = $this->count_jan();
$this->load->view('welcome_message', $data);
}
public function count_jan() {
$this->db->where('month_joined_up', 'January');
$query = $this->db->get('user');
if ($query->num_rows() > 0) {
return $query->num_rows();
} else {
return 0;
}
}
}
最簡單的方法是將Flot Tooltip插件添加到頁面並將其添加到options對象:
grid: {
hoverable: true,
...
},
tooltip: {
show: true,
content: '%y new users in %x',
cssClass: 'name of the class you want to use for the tooltip' // optional
}
感謝@Raidri給我關於浮動條形圖的工具提示的想法,現在我可以在下面的代碼中使用它
<script type="text/javascript">
$( document ).ready(function() {
$('#bar-chart').bind('plothover', function(event, pos, item) {
$('.tooltip').remove();
if (item) {
$('<div id="tooltip" class="tooltip top in"><div class="tooltip-arrow"></div><div class="tooltip-inner">' + item.datapoint[1].toFixed(2) + '</div></div>').prependTo('body');
$('#tooltip').css({
position: 'absolute',
left: item.pageX - ($('#tooltip').outerWidth() / 2),
top: item.pageY - $('#tooltip').outerHeight(),
pointer: 'cusror'
}).fadeIn('slow');
$('#bar-chart').css('cursor', 'pointer');
} else {
$('#bar-chart').css('cursor', 'auto');
}
});
});
</script>
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