array.wxs
function isArray(array) {
return array && array.constructor === 'Array';
}
module.exports.isArray = isArray;
object.wxs
对象keys数组化
var REGEXP = getRegExp('{|}|"', 'g');
function keys(obj) {
return JSON.stringify(obj)
.replace(REGEXP, '')
.split(',')
.map(function(item) {
return item.split(':')[0];
});
}
module.exports.keys = keys;
var array = require('./array.wxs');
var object = require('./object.wxs');
var PREFIX = 'van-';
function join(name, mods) {
name = PREFIX + name;
mods = mods.map(function(mod) {
return name + '--' + mod;
});
mods.unshift(name);
return mods.join(' ');
}
function traversing(mods, conf) {
if (!conf) {
return;
}
if (typeof conf === 'string' || typeof conf === 'number') {
mods.push(conf);
} else if (array.isArray(conf)) {
conf.forEach(function(item) {
traversing(mods, item);
});
} else if (typeof conf === 'object') {
object.keys(conf).forEach(function(key) {
conf[key] && mods.push(key);
});
}
}
// BEM规则返回classnames string
// bem('button', {disabled: true, readonly: false}) => return 'van-button van-button--disabled';
function bem(name, conf) {
var mods = [];
traversing(mods, conf);
return join(name, mods);
}