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commontools

v0.1.6

Published

* [trim](#trim) (去除字符串空格) * [changeCase](#changecase) (字母大小写切换) * [repeatStr](#repeatstr) (字符串循环复制)

Downloads

23

Readme

commonTools

npm install commontools

import tools from 'commontools'

tools.trim('Hello npm!',1)

trim

//去除空格  type 1-所有空格  2-前后空格  3-前空格 4-后空格
//tools.trim('  1235asd',1)
//result:1235asd
//这个方法有原生的方案代替,但是考虑到有时候开发PC站需要兼容IE8,所以就还是继续保留
trim: function (str, type) {
    switch (type) {
        case 1:
            return str.replace(/\s+/g, "");
        case 2:
            return str.replace(/(^\s*)|(\s*$)/g, "");
        case 3:
            return str.replace(/(^\s*)/g, "");
        case 4:
            return str.replace(/(\s*$)/g, "");
        default:
            return str;
    }
}

changeCase

/*type
 1:首字母大写
 2:首页母小写
 3:大小写转换
 4:全部大写
 5:全部小写
 * */
//tools.changeCase('asdasd',1)
//result:Asdasd
changeCase: function (str, type) {
    function ToggleCase(str) {
        var itemText = ""
        str.split("").forEach(
            function (item) {
                if (/^([a-z]+)/.test(item)) {
                    itemText += item.toUpperCase();
                } else if (/^([A-Z]+)/.test(item)) {
                    itemText += item.toLowerCase();
                } else {
                    itemText += item;
                }
            });
        return itemText;
    }
    switch (type) {
        case 1:
            return str.replace(/\b\w+\b/g, function (word) {
                return word.substring(0, 1).toUpperCase() + word.substring(1).toLowerCase();
            });
        case 2:
            return str.replace(/\b\w+\b/g, function (word) {
                return word.substring(0, 1).toLowerCase() + word.substring(1).toUpperCase();
            });
        case 3:
            return ToggleCase(str);
        case 4:
            return str.toUpperCase();
        case 5:
            return str.toLowerCase();
        default:
            return str;
    }
}

repeatStr

//repeatStr(str->字符串, count->次数)
//tools.repeatStr('123',3)
//"result:123123123"
repeatStr: function (str, count) {
    var text = '';
    for (var i = 0; i < count; i++) {
        text += str;
    }
    return text;
}