Question

html页面中的js代码

实现指定路径目录时出现指定的图片，没有指定路径时为默认图片，以下为代码，有点错误：在前三个路径时默认图片也出来了

var href = window.document.location.href
var html = '';
var matchDomain = 'http://www.abc.com/aaa/';
var domain = href.substr(0, matchDomain.length);
if (domain == matchDomain)
html = html+'<div class=\"divline\"></div><div class=\"c_left1\"><a href=\"http://www.abc.com\"><img src=\"1.gif\"></a></div>';

var matchDomain = 'http://bbs.abc.com/aaa/';
var domain = href.substr(0, matchDomain.length);
if (domain == matchDomain)
html = html+'<div class=\"divline\"></div><div class=\"c_left1\"><a href=\"http://www.abc.com\"><img src=\"2.gif\"></a></div>';

var matchDomain = 'http://www.abc.com/bbb/';
var domain = href.substr(0, matchDomain.length);
if (domain == matchDomain)
html = html+'<div class=\"divline\"></div><div class=\"c_left1\"><a href=\"http://www.abc.com\"><img src=\"3.gif\"></a></div>';

var matchDomain = 'http://bbs.abc.com/bbb/';
var domain = href.substr(0, matchDomain.length);
if (domain == matchDomain)
html = html+'<div class=\"divline\"></div><div class=\"c_left1\"><a href=\"http://www.abc.com\"><img src=\"4.gif\"></a></div>';

else
html = html+ '<div class=\"divline\"></div><div class=\"c_left1\"><a href=\"http://www.abc.com\"><img src=\"5.jpg \"></a></div>';

document.writeln(html);
document.close();

Answer 1

var href = window.document.location.href
var html = '';
var matchDomain = 'http://www.abc.com/aaa/';
var domain = href.substr(0, matchDomain.length);
var isDefault = true;
if (domain == matchDomain) {
html = html+'<div class=\"divline\"></div><div class=\"c_left1\"><a href=\"http://www.abc.com\"><img src=\"1.gif\"></a></div>';
isDefault = false;
}

var matchDomain = 'http://bbs.abc.com/aaa/';
var domain = href.substr(0, matchDomain.length);
if (domain == matchDomain) {
html = html+'<div class=\"divline\"></div><div class=\"c_left1\"><a href=\"http://www.abc.com\"><img src=\"2.gif\"></a></div>';
isDefault = false;
}

var matchDomain = 'http://www.abc.com/bbb/';
var domain = href.substr(0, matchDomain.length);
if (domain == matchDomain) {
html = html+'<div class=\"divline\"></div><div class=\"c_left1\"><a href=\"http://www.abc.com\"><img src=\"3.gif\"></a></div>';
isDefault = false;
}

var matchDomain = 'http://bbs.abc.com/bbb/';
var domain = href.substr(0, matchDomain.length);
if (domain == matchDomain) {
html = html+'<div class=\"divline\"></div><div class=\"c_left1\"><a href=\"http://www.abc.com\"><img src=\"4.gif\"></a></div>';
isDefault = false;
}

if (isDefault)
html = html+ '<div class=\"divline\"></div><div class=\"c_left1\"><a href=\"http://www.abc.com\"><img src=\"5.jpg \"></a></div>';

document.writeln(html);
document.close();

isDefault为是否是默认的判断变量。