JavaScript去除字符串空格throwswitchcasebreakdefault

Posted 2022-05-18 web半晨

function removeSpaces(paramsString, type) 
    paramsString = String(paramsString);
    type = Number(type);

    if (!paramsString || !type) throw new Error('参数有误');

    switch (type) 
        case 1:
            // 去除字符串所有的空格
            paramsString = paramsString.replace(/\\s*/g, "");
            break;

        case 2:
            // 去除字符串两头的空格
            paramsString = paramsString.replace(/^\\s*|\\s*$/g, "");
            break;

        case 3:
            // 去除字符串左侧的空格
            paramsString = paramsString.replace(/^\\s*/, "");
            break;

        case 4:
            // 去除字符串右侧的空格
            paramsString = paramsString.replace(/(\\s*$)/g, "");
            break;

        case 5:
            // 去除字符串两头的空格
            paramsString = paramsString.trim();
            break;

        case 6:
            // 去除字符串左侧的空格
            paramsString = paramsString.trimLeft();
            break;

        case 7:
            // 去除字符串右侧的空格
            paramsString = paramsString.trimRight();
            break;

        default:
            throw new Error('出错啦');
            break;
    

    return paramsString;


console.log(removeSpaces(' Hello World ', 1));
console.log(removeSpaces(' Hello World ', 2));
console.log(removeSpaces(' Hello World ', 3));
console.log(removeSpaces(' Hello World ', 4));
console.log(removeSpaces(' Hello World ', 5));
console.log(removeSpaces(' Hello World ', 6));
console.log(removeSpaces(' Hello World ', 7));
console.log(removeSpaces(' Hello World ', 8));