export function debounce(func, delay) {
	let timer = null;
	return function() {
		clearTimeout(timer);
		timer = setTimeout(() => {
			func.apply(this, arguments);
		}, delay);
	};
}

//深度对比合并两个对象，相同属性b会覆盖a
export function deepMergeObject(a, b){
	let data = JSON.parse(JSON.stringify(a))
	function mergeObject(obj1, obj2){
		for(let key in obj2){
			if(typeof obj1[key] == 'object'){
				obj1[key] = mergeObject(obj1[key], obj2[key])
			}else{
				obj1[key] = obj2[key]
			}
		}
		return obj1
	}
	return mergeObject(data, b)
}