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javascript - 用回车替换字符 - JavaScript

问题描述

我想寻求帮助，学习如何从字符串中替换 3 种不同的字符组合，并用回车替换它们。

字符组合为：

++~
~~+
+~\

我希望能够用回车替换这些组合。

字符串示例：

Capacity for the concerts is 3,645 persons with additional safety conditions.++~ Approved contractor will barricade and cone the race route.++~ Coordinate activities and schedule with the street coordinator, 608-261-9171.++~ Animals must remain in fenced area ~~+ Maintain access to Metro stops.~~+ There is no event parking in the parking lot.~~+ Event volunteers and staff will monitor the barricades during the event.~~+ Staff will review the event for compliance to the established conditions and determine what remediation (if any) is needed and/or establish considerations for future events.+~\ Event organizer/sponsor is responsible for cleanup of event area. Charges will be assessed for any staff time or resources required for clean-up.+~\

任何有关代码示例的帮助将不胜感激。

谢谢！

更新

我有一个启动器功能，它可以工作，但我不确定这是否是一个可扩展的解决方案。

function findAndReplace() {

    var string = 'Addendum and/or contract providing additional event details and conditions. Capacity for the King St. concerts is 3,645 persons with additional safety conditions as per Addendum.++~ Addendum and/or contract providing additional event details and conditions on file in Madison Parks.++~ Notification: Event participants must be notified prior to the race that they must adhere to the traffic signals. They are not allowed to stop traffic during the event.++~ Organizer must notify hotels, businesses and residents along the approved bike route. Include estimated time periods when athletics will "block" access and provide day-off contact information.++~ Call the Sayle Street Garage, 608-266-4767, 1120 Sayle St, to make arrangements to pick up and return barricades required for event. There may be charges for this equipment.++~ '; 

    var target1 = '++~ ';   
    var target2 = '~~+ ';   
    var target3 = '+~\\ ';  

    var replacement = '\n';

    var i = 0, length = string.length;

    for (i; i < length; i++) { 

        string = string.replace(target1, replacement) 
                        .replace(target2, replacement)
                        .replace(target3, replacement);
    }

    return string;

} 

console.log(findAndReplace());

标签： javascriptstringreplacecarriage-return

解决方案

这个简单的正则表达式将替换字符串中的所有出现。

/\+\+~|~~\+|\+~\\/g

您首先需要对\字符串中的 进行转义，以便abc+~\monkey将其变为 this abc+~\\monkey。

然后您可以使用 split 来拆分项目。map 对项目进行一些清理，然后加入以插入回车\r\n

let str = 'Capacity for the concerts is 3,645 persons with additional safety conditions.++~ Approved contractor will barricade and cone the race route.++~ Coordinate activities and schedule with the street coordinator, 608-261-9171.++~ Animals must remain in fenced area ~~+ Maintain access to Metro stops.~~+ There is no event parking in the parking lot.~~+ Event volunteers and staff will monitor the barricades during the event.~~+ Staff will review the event for compliance to the established conditions and determine what remediation (if any) is needed and/or establish considerations for future events.+~\\ Event organizer/sponsor is responsible for cleanup of event area. Charges will be assessed for any staff time or resources required for clean-up.+~\\'

str = str.split(/\+\+~|~~\+|\+~\\/g).map(i => i.trim()).join('\r\n')

console.log(str)

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