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私はドロップダウンリストとリストボックスを表示していますが、どちらも表示されますが、ドロップダウンリストから項目を選択すると、目に見えるようになります。それ以外は隠されているはずです。助けてください！ここに私のhtmlドロップダウンの項目をクリックしたときにのみリストボックスを表示する
<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<meta content="utf-8" http-equiv="encoding">
<title>D3</title>
<!-- <link rel="stylesheet" type="text/css" href="mystyle1.css" /> -->
<style>
body {
color: #000;
}
.axis {
font: 10px sans-serif;
}
.axis path,
.axis line {
fill: none;
stroke: #000;
shape-rendering: crispEdges;
}
.bar {
fill: steelblue;
}
.bar:hover {
fill: brown;
}
</style>
<script type="text/javascript" src="http://mbostock.github.com/d3/d3.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.2/jquery.min.js"></script>
<script src="123.js" type="text/javascript"></script>
</head>
<script src="http://d3js.org/d3.v3.min.js"></script>
<body>
<div id="chart"></div>
<div align="center">
From : <input type="date" name="field1" id="field1" /> To : <input type="date" name="field2" id="field2" /><br /><br />
<input type="button" onclick="render(true)" value="Submit" />
</div>
<script>
var jsonURL = 'myData.json';
var myData = [];
var margin = {
top: 20,
right: 0,
bottom: 80,
left: 40
};
var width = 500 - margin.left - margin.right;
var height = 300 - margin.top - margin.bottom;
var xScale = d3.scale.ordinal().rangeRoundBands([0, width], .1);
var yScale = d3.scale.linear().range([height, 0]);
var hAxis = d3.svg.axis().scale(xScale).orient('bottom').tickFormat(d3.time.format("%Y-%m-%d"));
var vAxis = d3.svg.axis().scale(yScale).orient('left');
var tooltip = d3.select('body').append('div')
.style('position', 'absolute')
.style('background', '#f4f4f4')
.style('padding', '5 15px')
.style('border', '1px #333 solid')
.style('border-radius', '5px')
.style('opacity', 'o');
function getDates() {
return [document.getElementById('field1').value, document.getElementById('field2').value];
}
function render(filterByDates) {
d3.select('svg').remove();
if (filterByDates) {
var date1 = new Date(document.getElementById('field1').value);
var date2 = new Date(document.getElementById('field2').value);
myData = myData.filter(function (d) {
return d.date >= date1 && d.date <= date2;
});
}
xScale.domain(myData.map(function (d) {
return d.date;
}));
yScale.domain([0, d3.max(myData, function (d) {
return d.value;
})]);
var svg = d3.select('#chart').append('svg')
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
svg
.append('g')
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(hAxis)
.selectAll("text")
.style("text-anchor", "end")
.attr("dx", "-.8em")
.attr("dy", "-.55em")
.attr("transform", "rotate(-90)");
svg
.append('g')
.attr("class", "y axis")
// .attr('transform', 'translate(35,' + (height - 25) + ')')
.call(vAxis)
svg
.selectAll(".bar")
.data(myData)
.enter().append("rect")
.attr("class", "bar")
.style("fill", "steelblue")
.attr("x", function (d) {
return xScale(d.date);
})
.attr("width", xScale.rangeBand())
.attr("y", function (d) {
return yScale(d.value);
})
.attr("height", function (d) {
return height - yScale(d.value);
})
.on('mouseover', function (d) {
tooltip.transition()
.style('opacity', 1)
tooltip.html(d.value)
.style('left', (d3.event.pageX) + 'px')
.style('top', (d3.event.pagey) + 'px')
d3.select(this).style('opacity', 0.5)
})
.on('mouseout', function (d) {
tooltip.transition()
.style('opacity', 0)
d3.select(this).style('opacity', 1)
});
}
d3.json(jsonURL, function (data) {
myData = data;
myData.forEach(function (d) {
d.date = new Date(d.date);
d.name = +d.name;
});
render(false);
});
</script>
<label> List of Tables : </label><br>
<form name="myform" id="myForm">
<div style="height: 30px; width: 50px;">
<select id="dropdown1"></select>
</div>
<style>
#listbox {
position: relative;
}
</style>
<div style="margin-left: 150px; margin-top: -30px; height: auto;">
<select id="listbox" , multiple></select>
</div>
<br>
</form>
</html>
これは私のjsのお手伝いを致します続き
$(document).ready(function() {
$.ajax({
url: "mydata.json",
dataType: "json",
success: function (obj) {
var jsObject = obj;
var usedNames = [];
$('<option>', {
text: 'Select your Option',
value: '',
selected: 'selected',
disabled: 'disabled',
location: 'fixed'
}).appendTo('#dropdown1')
$.each(obj, function (key, value) {
if (usedNames.indexOf(value.name) == -1) {
$("#dropdown1").append("<option value=" + key + ">" + value.name + "</option>");
usedNames.push(value.name);
}
/* $('<option>', {
text: 'Select your Option',
value: '',
selected: 'selected',
disabled: 'disabled'
}).appendTo('#dropdown1');
*/
$('#dropdown1').change(function() {
$('#listbox').empty();
$('<option>', {
text: 'Select your List Option',
value: '',
selected: 'selected',
disabled: 'disabled'
}).appendTo('#listbox');
var selection = $('#dropdown1 :selected').text();
// var selection = $('#dropdown1 :selected').text();
$.each(jsObject, function (index, value) {
if (value['name'] == selection) {
var optionHtml = '';
for (var i = 1; i <= 20; i++) {
var attr = 'attr' + ('000' + i).substr(-3);
optionHtml += '<option value="' + attr + '">' + value[attr] + '</option>';
}
$("#listbox").css("width", "500px")
$("#listbox").css("height", "300px")
$('#listbox').append(optionHtml);
return false;
}
});
});
});
}
});
});