我在html中有一个表，显示来自mysql db的数据。
<table>
<thead>
<tr>
<th>Header-1</th>
<th>Header-2</th>
</tr>
</thead>
<?php foreach($results as $key=>$row) { ?>
<tr>
<td><?php echo $row['Data-1'];?></td>
<td><?php echo $row['Data-2'];?></td>
</tr>
</table>
Data-1和Data-2中的字符数更多，所以我想限制为最多3-4行，但是当光标放在它们上面时，我想要一个弹出窗口，显示整个数据弹出窗口。这怎么办？
提前致谢..
答案 0 :(得分：1)
我会使用<!DOCTYPE html>
<meta charset="utf-8">
<style>
svg {
font: 10px sans-serif;
}
.line {
fill: none;
stroke: steelblue;
clip-path: url(#clip);
}
circle {
clip-path: url(#clip);
}
.axis path,
.axis line {
fill: none;
stroke: #000;
shape-rendering: crispEdges;
}
.brush .extent {
stroke: #fff;
fill-opacity: .125;
shape-rendering: crispEdges;
}
</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script>
var margin = {
top: 10,
right: 40,
bottom: 100,
left: 40
},
margin2 = {
top: 430,
right: 40,
bottom: 20,
left: 40
},
width = 500 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom,
height2 = 500 - margin2.top - margin2.bottom;
var x = d3.scale.linear().range([0, width])
y = d3.scale.linear().range([height, 0]),
y2 = d3.scale.linear().range([height, 0]),
xBrush = d3.scale.linear().range([0,width]),
yBrush = d3.scale.linear().range([height2, 0]),
y2Brush = d3.scale.linear().range([height2, 0]);
var xAxis = d3.svg.axis().scale(x).orient("bottom"),
yAxis = d3.svg.axis().scale(y).orient("left"),
yAxis2 = d3.svg.axis().scale(y2).orient("right"),
yAxisBrush = d3.svg.axis().scale(yBrush).orient("bottom");
xAxisBrush = d3.svg.axis().scale(xBrush).orient("bottom");
var brush = d3.svg.brush()
.x(xBrush)
.y(yBrush)
.on("brush", brushed);
var line = d3.svg.line()
.interpolate("monotone")
.x(function(d) {
return x(d.x);
})
.y(function(d) {
return y(d.y);
});
var lineBrush = d3.svg.line()
.interpolate("monotone")
.x(function(d) {
return x(d.x);
})
.y(function(d) {
return yBrush(d.y);
});
var svg = d3.select("body").append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom);
svg.append("defs").append("clipPath")
.attr("id", "clip")
.append("rect")
.attr("width", width)
.attr("height", height);
var focus = svg.append("g")
.attr("class", "focus")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
var context = svg.append("g")
.attr("class", "context")
.attr("transform", "translate(" + margin2.left + "," + margin2.top + ")");
var data1 = [],
data2 = [];
for (var i = 0; i < 100; i++) {
data1.push({
x: i,
y: Math.random() * 10
});
if (i % 3 === 0){
data2.push({
x: i,
y: Math.random() * 100
});
}
}
x.domain([0,100]);
y.domain([0, d3.max(data1.map(function(d) {
return d.y;
}))]);
y2.domain([0, d3.max(data2.map(function(d) {
return d.y;
}))]);
xBrush.domain(x.domain());
yBrush.domain(y.domain());
y2Brush.domain(y2.domain());
focus.append("path")
.datum(data1)
.attr("class", "line")
.attr("d", line);
var scatter = focus.append("g")
.selectAll("circle")
.data(data2);
scatter
.enter()
.append("circle")
.attr("cx", function(d){
return x(d.x);
})
.attr("cy", function(d){
return y2(d.y);
})
.attr("r", function(d){
d.r = Math.random() * 20;
return d.r;
})
.style("fill", "orange")
.style("opacity", "0.5");
focus.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
focus.append("g")
.attr("class", "y axis")
.call(yAxis);
focus.append("g")
.attr("transform", "translate(" + width + " ,0)")
.attr("class", "y2 axis")
.call(yAxis2);
context.append("path")
.datum(data1)
.attr("class", "line")
.attr("d", lineBrush);
context.append("g")
.selectAll("circle")
.data(data2)
.enter()
.append("circle")
.attr("cx", function(d){
return x(d.x);
})
.attr("cy", function(d){
return y2Brush(d.y);
})
.attr("r", function(d){
return d.r * 0.25;
})
.style("fill", "orange")
.style("opacity", "0.5");
context.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height2 + ")")
.call(xAxisBrush);
context.append("g")
.attr("class", "x brush")
.call(brush)
.selectAll("rect")
.attr("y", -6)
.attr("height", height2 + 7);
function brushed() {
var extent = brush.extent(),
yDomain = [extent[0][1], extent[1][1]];
y2.domain([y2Brush.invert(yBrush(yDomain[0])), y2Brush.invert(yBrush(yDomain[1]))]);
x.domain(brush.empty() ? xBrush.domain() : [extent[0][0], extent[1][0]]);
y.domain(brush.empty() ? yBrush.domain() : yDomain);
scatter
.attr("cx", function(d){
return x(d.x);
})
.attr("cy", function(d){
return y2(d.y);
})
focus.select(".line").attr("d", line);
focus.select(".x.axis").call(xAxis);
focus.select(".y.axis").call(yAxis);
focus.select(".y2.axis").call(yAxis2);
}
</script> CSS属性将每一位数据固定长度，然后调整我前几天制作的JSFiddle，这样当它们鼠标悬停时，整个单元格都会展开，或者弹出一个弹出窗口显示完整数据：
https://jsfiddle.net/07q6pLfj/1/
overflow:hidden;