截断字符串直接JavaScript [英] Truncate a string straight JavaScript
本文介绍了截断字符串直接JavaScript的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我想使用直接JavaScript截断动态加载的字符串。这是一个网址,所以没有空格,我显然不关心字边界,只关注字符。
I'd like to truncate a dynamically loaded string using straight JavaScript. It's a url, so there are no spaces, and I obviously don't care about word boundaries, just characters.
这是我得到的:
var pathname = document.referrer; //wont work if accessing file:// paths
document.getElementById("foo").innerHTML = "<a href='" + pathname +"'>" + pathname +"</a>"
推荐答案
使用子串方法:
var length = 3;
var myString = "ABCDEFG";
var myTruncatedString = myString.substring(0,length);
// The value of myTruncatedString is "ABC"
所以在你的情况下:
var length = 3; // set to the number of characters you want to keep
var pathname = document.referrer;
var trimmedPathname = pathname.substring(0, Math.min(length,pathname.length));
document.getElementById("foo").innerHTML =
"<a href='" + pathname +"'>" + trimmedPathname + "</a>"
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