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开发中可能会用到的几个 jQuery 小提示和技巧

2014-03-07 10:32 441 查看
1、禁止右键

$(document).ready(function() {
//catch the right-click context menu
$(document).bind("contextmenu",function(e) {
//warning prompt - optional
alert("No right-clicking!");

//delete the default context menu
return false;
});
});


2、文本缩放

$(document).ready(function() {
//find the current font size
var originalFontSize = $('html').css('font-size');

//Increase the text size
$(".increaseFont").click(function() {
var currentFontSize = $('html').css('font-size');
var currentFontSizeNumber = parseFloat(currentFontSize, 10);

var newFontSize = currentFontSizeNumber*1.2;
$('html').css('font-size', newFontSize);
return false;
});

//Decrease the Text Size
$(".decreaseFont").click(function() {
var currentFontSize = $('html').css('font-size');
var currentFontSizeNum = parseFloat(currentFontSize, 10);

var newFontSize = currentFontSizeNum*0.8;
$('html').css('font-size', newFontSize);
return false;
});

// Reset Font Size
$(".resetFont").click(function(){
$('html').css('font-size', originalFontSize);
});
});


3、新窗口打开连接

$(document).ready(function() {
//select all anchor tags that have http in the href
//and apply the target=_blank
$("a[href^='http']").attr('target','_blank');
});


4、样式表切换

$(document).ready(function() {
$("a.cssSwap").click(function() {
//swap the link rel attribute with the value in the rel
$('link[rel=stylesheet]').attr('href' , $(this).attr('rel'));
});
});


5、回到顶部

$(document).ready(function() {
//when the id="top" link is clicked
$('#top').click(function() {
//scoll the page back to the top
$(document).scrollTo(0,500);
}
});


6、获取鼠标的 X、Y 坐标

$(obj).mousemove(function(e){
//display the x and y axis values inside the P element
$('p').html("X Axis : " + e.pageX + " | Y Axis " + e.pageY);
});


7、检测当前鼠标的坐标

$(document).ready(function() {
$(obj).mousemove(function(e){
$('# MouseCoordinates ').html("X Axis Position = " + e.pageX + " and Y Axis Position = " + e.pageY);
});
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