我有一个包含3个分区的简单index.html,使用JQuery,如何根据按钮<p> </p>
和{{1}将ZOOM+
标记内的文本设置为ZOOM IN或OUT只有3个级别?
这是index.html:
ZOOM-
style.css:
<html>
<link rel="stylesheet" type="text/css" href="style.css">
<script src="jquery.js"></script>
<script>
$(document).ready(
function ()
{
var text = $('#d3').children('p').text();
$("#d1").click(function() {
$("#d2").show();
});
$("#btn1").click(function() {
});
});
</script>
</head>
<body>
<div id="d1">
En cliquant ici le slide va descendre ou remonter.
</div>
<div id="d2" hidden >
<div id="d3">
<p>HELLO</p>
</div>
<button type="button" id="btn1">ZOOM+</button>
<button type="button" id="btn2">ZOOM-</button>
</div>
</body>
</html>
答案 0 :(得分:1)
可能的解决方案是:
var initialSize = "16px";
$(function () {
var text = $('#d3').children('p').text();
var obj = $('p');
var initialSize = parseInt(obj.css('font-size')) + 'px';
$("#d1").click(function () {
$("#d2").show();
});
$("#btn1").click(function () {
var obj = $('p');
var fontSize = parseInt(obj.css('font-size')) + 1;
obj.css('font-size', fontSize + 'px');
});
$("#btn2").click(function () {
var obj = $('p');
var fontSize = parseInt(obj.css('font-size')) - 1;
obj.css('font-size', fontSize + 'px');
});
$("#btn3").click(function () {
$('p').css('font-size', initialSize);
});
});
&#13;
#d1 {
width: 600px;
background-color: #e5eecc;
border-style: solid;
border: 1px 1px 1px 1px;
padding-left: 40px;
padding-right: 40px;
}
#d2 {
height: 160px;
width: 600px;
background-color: #e5eecc;
border-style: solid;
border: 1px 1px 1px 1px;
padding-left: 40px;
padding-right: 40px;
}
#d3 {
height: 100px;
widows: 200px;
background-color: #98bf21;
position: absolute;
}
#btn1 {
display: inline-block;
margin-left: 140px;
}
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<script src="http://code.jquery.com/jquery-1.11.3.js"></script>
<div id="d1">
En cliquant ici le slide va descendre ou remonter.
</div>
<div id="d2" hidden>
<div id="d3">
<p>HELLO</p>
</div>
<button type="button" id="btn1">ZOOM+</button>
<button type="button" id="btn2">ZOOM-</button>
<button type="button" id="btn3">ZOOM Reset</button>
</div>
&#13;
答案 1 :(得分:1)
使用window.getComputedStyle
获取段落属性
这是一个解决方案:
$(document).ready(
function ()
{
var paragraphElement = $('#d3').children('p');
console.log(paragraphElement.length);
$("#d1").click(function() {
$("#d2").show();
});
$("#btn1").click(function() {
for(var i=0;i<paragraphElement.length;i++){
var p= paragraphElement[i];
var style = window.getComputedStyle(p, null).getPropertyValue('font-size');
var fontSize = parseFloat(style);
p.style.fontSize = (fontSize + 1) + 'px';
};
});
$("#btn2").click(function() {
for(var i=0;i<paragraphElement.length;i++){
var p= paragraphElement[i];
var style = window.getComputedStyle(p, null).getPropertyValue('font-size');
var fontSize = parseFloat(style);
if(fontSize>2)
p.style.fontSize = (fontSize - 1) + 'px';
};
});
});
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#d1
{
width: 600px;
background-color: #e5eecc;
border-style: solid;
border: 1px 1px 1px 1px;
padding-left: 40px;
padding-right: 40px;
}
#d2
{
height: 160px;
width: 600px;
background-color: #e5eecc;
border-style: solid;
border: 1px 1px 1px 1px;
padding-left: 40px;
padding-right: 40px;
}
#d3
{
height: 100px;
widows: 200px;
background-color: #98bf21;
position: absolute;
}
#btn1
{
display: inline-block;
margin-left: 140px;
}
&#13;
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="d1">
En cliquant ici le slide va descendre ou remonter.
</div>
<div id="d2" hidden >
<div id="d3">
<p>HELLO</p>
<p> another parapgraph</p>
</div>
<button type="button" id="btn1">ZOOM+</button>
<button type="button" id="btn2">ZOOM-</button>
</div>
&#13;