JavaScript StringBuilder

最新推荐文章于 2025-09-12 16:56:45 发布

转载最新推荐文章于 2025-09-12 16:56:45 发布 · 86 阅读

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原文链接：http://www.cnblogs.com/joe-yang/archive/2008/11/30/1344419.html

文章标签：

#javascript #ViewUI

本文介绍了一种使用自定义StringBuilder类进行字符串拼接的方法。通过创建StringBuilder实例并调用其append方法来添加文本片段，最后将所有片段转换为完整的字符串。这种方式在处理大量字符串拼接时比直接使用加号更高效。

Code
// Initializes a new instance of the StringBuilder class
// and appends the given value if supplied
function StringBuilder(value)
{
    this.strings = new Array("");
    this.append(value);
}

// Appends the given value to the end of this instance.
StringBuilder.prototype.append = function (value)
{
    if (value)
    {
        this.strings.push(value);
    }
}

// Clears the string buffer
StringBuilder.prototype.clear = function ()
{
    this.strings.length = 1;
}

// Converts this instance to a String.
StringBuilder.prototype.toString = function ()
{
    return this.strings.join("");
}

Code
// create a StringBuilder
var sb = new StringBuilder();

// append some text
sb.append("Lorem ipsum dolor sit amet, consectetuer adipiscing elit, ");
sb.append("sed diem nonummy nibh euismod tincidunt ut lacreet dolore ");
sb.append("magna aliguam erat volutpat.");

// get the full string value
var s = sb.toString();

转载于:https://www.cnblogs.com/joe-yang/archive/2008/11/30/1344419.html