微信小程序使用wxs在页面中调用js函数，颜色值格式转换 rgb和十六进制的转换

Posted 2021-03-17 炽橙子

<wxs module="filter">
var filter = {
  numberToFix: function (hex) {
      // 16进制颜色值的正则
        // var reg = /^#([0-9a-fA-f]{3}|[0-9a-fA-f]{6})$/;
        var reg = getRegExp(‘^#([0-9a-fA-f]{3}|[0-9a-fA-f]{6})$‘,‘g‘);
        console.log(reg);
        console.log(‘结束‘);
        // 把颜色值变成小写
        var color = hex.toLowerCase();
        if (reg.test(color)) {
            // 如果只有三位的值，需变成六位，如：#fff => #ffffff
            if (color.length === 4) {
                var colorNew = "#";
                for (var i = 1; i < 4; i += 1) {
                    colorNew += color.slice(i, i + 1).concat(color.slice(i, i + 1));
                }
                color = colorNew;
            }
            // 处理六位的颜色值，转为RGB
            var colorChange = [];
            for (var i = 1; i < 7; i += 2) {
                colorChange.push(parseInt("0x" + color.slice(i, i + 2)));
            }
            console.log(‘ygy1‘);
            return "RGB(" + colorChange.join(",") + ")";
        } else {
            console.log(‘ygy2‘);
            return color;
        }
  },
  
}
module.exports = {
  numberToFix: filter.numberToFix
}

</wxs>

<view class="recharge-list is-active" style="

background-color:

{{filter.numberToFix(baseinfo.base_color)}}"></view>

参考：

1、https://blog.csdn.net/weixin_34049948/article/details/93310218

2、https://developers.weixin.qq.com/community/develop/doc/000cc054f101c0ebbb399ca2751000?highLine=wxs%2520%25E4%25B8%25AD%25E6%2594%25AF%25E6%258C%2581%25E6%25AD%25A3%25E5%2588%2599%25E8%25A1%25A8%25E8%25BE%25BE%25E5%25BC%258F

3、https://www.liaoxuefeng.com/wiki/1022910821149312/1023021582119488

4、https://blog.csdn.net/mossbaoo/article/details/93484635