如何切换切换按钮以显示加号还是减号?
按钮放大和缩小文本。如果文本很大...按钮是
减号,如果文本很小...按钮是加号等jQuery,切换按钮以显示加号或减号
我昨天有一些帮助,我仍然试图学习jQuery和种类卡住。
感谢您的帮助,
<!DOCTYPE html PUBLIC ">
<head>
<script type="text/javascript" src="js/jquery-1.4.min.js"></script>
<script type='text/javascript'>
var fontSizes = [14, 16]
$(function(){
$('input').click(function() {
$('p').css('font-size', fontSizes[0] + 'pt');
fontSizes.reverse();
var currFontSize = ourText.css('fontSize');
var finalNum = parseFloat(currFontSize, 10);
var stringEnding = currFontSize.slice(-2);
if(this.id == 'large') {
finalNum *= 1.2;
}
else if (this.id == 'small'){
finalNum /=1.2;
}
ourText.css('fontSize', finalNum + stringEnding);
});
});
</script>
</head>
<body>
<h2>Toggle Size? </h2>
<!--TOGGLE BUTTON NEEDS TO CHANGE FROM PLUS TO MINUS-->
<input type='button' value='+' id='small' />
<p>My Text!!!</p>
</body>
</html>
下面的代码的的jsfiddle:http://jsfiddle.net/TebyM/ – 2011-03-04 16:53:53