大多数现代Javascript框架(JQuery, Prototype等)都有一个附加在String上的实用函数来处理这个问题。

下面是Prototype中的一个例子:

'Some random text'.truncate(10);
// -> 'Some ra...'

这似乎是您希望其他人处理/维护的功能之一。我会让框架来处理它，而不是编写更多的代码。

大多数现代Javascript框架(JQuery, Prototype等)都有一个附加在String上的实用函数来处理这个问题。

下面是Prototype中的一个例子:

'Some random text'.truncate(10);
// -> 'Some ra...'

这似乎是您希望其他人处理/维护的功能之一。我会让框架来处理它，而不是编写更多的代码。

Text-overflow:省略号是您需要的属性。有了这个和一个溢出:隐藏在一个特定的宽度，超过它的所有东西将在最后得到三个周期的效果……不要忘记添加空格:nowrap或文本将被放入多行。

.wrap{
  text-overflow: ellipsis
  white-space: nowrap;
  overflow: hidden;
  width:"your desired width";
}
<p class="wrap">The string to be cut</p>

聪明的地方:D

//My Huge Huge String let tooHugeToHandle = `It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout. The point of using Lorem Ipsum is that it has a more-or-less normal distribution of letters, as opposed to using 'Content here, content here', making it look like readable English. Many desktop publishing packages and web page editors now use Lorem Ipsum as their default model text, and a search for 'lorem ipsum' will uncover many web sites still in their infancy. Various versions have evolved over the years, sometimes by accident, sometimes on purpose (injected humour and the like).` //Trim Max Length const maxValue = 50 // The barber. const TrimMyString = (string, maxLength, start = 0) => { //Note - `start` is if I want to start after some point of the string if (string.length > maxLength) { let trimmedString = string.substr(start, maxLength) return ( trimmedString.substr( start, Math.min(trimmedString.length, trimmedString.lastIndexOf(' ')) ) + ' ...' ) } return string } console.log(TrimMyString(tooHugeToHandle, maxValue))

该功能还可以截断空格和文字部分。(例如:母亲变成飞蛾……)

String.prototype.truc= function (length) {
        return this.length>length ? this.substring(0, length) + '…' : this;
};

用法:

"this is long length text".trunc(10);
"1234567890".trunc(5);

输出:

这是… 12345年……

使用以下代码

 function trancateTitle (title) {
    var length = 10;
    if (title.length > length) {
       title = title.substring(0, length)+'...';
    }
    return title;
}