javascript jQuery：检查哈希是否包含
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jQuery: Check if hash contains
提问by user1374796
I'm looking to try and check if the hash in the url contains a certain value before proceeding, I have a function that works like so:
在继续之前，我想尝试检查 url 中的哈希值是否包含某个值，我有一个像这样工作的函数：
$(window).load(function () {
var hash = window.location.hash,
number = $(hash).index(),
width = 403,
final = width * number;
setTimeout(function () {
$('.news-inner-wrap').animate({
'marginLeft': "-=" + final + "px"
});
}, 1000);
});
So if the hash is www.website.com/#news-item-03it will slide the user horizontally along to the 3rd news story, this works great!. I only want this function to fire though if the hash contains news-itemobviously the number after each will change, but if the hash begins with news-itemthen I want the function above to be fired, I'm not even sure it this is at all possible, any suggestions would be greatly appreciated!
因此，如果散列是，www.website.com/#news-item-03它会将用户水平滑动到第三个新闻故事，这很好用！。我只希望这个函数被触发，尽管如果散列news-item明显包含每个之后的数字会改变，但是如果散列开始，news-item那么我希望上面的函数被触发，我什至不确定这是否可能建议将不胜感激！
回答by Niall Paterson
No need for jQuery, this should work nicely
不需要 jQuery，这应该很好用
if (window.location.hash) {
if (window.location.hash.indexOf('news-item') == 1) { // not 0 because # is first character of window.location.hash
// it's at the start
}
else if (window.location.hash.indexOf('news-item') != -1) {
// it's there, but not at the start
}
else {
// not there
}
}
回答by Peter van der Wal
Use a regular expression:
使用正则表达式：
var matches = hash.match(/^#news-item-([0-9]+)$/);
if (matches) {
var number = matches[1];
// Rest of your code
}
