Question

我想使用正则表达式转换以下文本，以便^text^中的文本被某些HTML标记内的文本替换。（在和

内

示例：

Input Text: Please select ^Continue^ to proceed with your call or ^Exit^ to call

Output Text: Please select <font color='red'>Continue</font> to proceed with your call or <font color='red'>Exit</font> to call

是否可以在javascript中使用正则表达式实现上述目标？

Answer 1

your_string.replace(/\^(.*?)\^/g, "<font color='red'>$1</font>");

示例：

> a = "Please select ^Continue^ to proceed with your call or ^Exit^ to call"
"Please select ^Continue^ to proceed with your call or ^Exit^ to call"
> a.replace(/\^(.*?)\^/g, "<font color='red'>$1</font>");
"Please select <font color='red'>Continue</font> to proceed with your call or 
<font color='red'>Exit</font> to call"

Answer 2

使用yourstring.replace(/\^([^\^]*)\^/g,"$1")

Explanation  -- Starting ^
               ------- Match everything but ^, in $1
                       -- End with ^

g是全局标志，表示正则表达式将匹配所有匹配。

示例：

text= "Please select ^Continue^ to proceed with your call or ^Exit^ to call" result=text.replace(/\^([^\^]*)\^/g,"$1")

Answer 3

可能更好地制作某种解析功能，取决于你的情况，就像这样。

的Javascript

function wrapMarked(string, open, close) {
    if (typeof string !== "string", typeof open !== "string", typeof close !== "string") {
        throw new TypeError("Arguments must be strings.");
    }

    if ((string.match(/\^/g) || []).length % 2 !== 0) {
        throw new Error("We have unmatched '^'s.");
    }

    string = string.replace(/\^{2}/g, "");
    var index = string.indexOf("^"),
        result = "",
        state = true;

    while (index !== -1) {
        result += string.substring(0, index);
        if (state) {
            result += open;
        } else {
            result += close;
        }

        string = string.substring(index + 1);
        index = string.indexOf("^");
        state = !state;
    }

    return result + string;
}

var text = "Please select ^Continue^ to proceed with your call or ^Exit^ to call";

console.log(wrapMarked(text, "<font color='red'>", "</font>"));

在jsfiddle

上

使用HTML中的正则表达式着色文本

3 个答案: