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常用js函数,js函数集合

url解析函数:

效果图:

function parseURL(url) {
	var a =  document.createElement('a');
	a.href = url;
	return {
		source: url,
		protocol: a.protocol.replace(':',''),
		host: a.hostname,
		port: a.port,
		query: a.search,
		params: (function(){
			var ret = {},
				seg = a.search.replace(/^\?/,'').split('&'),
				len = seg.length, i = 0, s;
			for (;i<len;i++) {
				if (!seg[i]) { continue; }
				s = seg[i].split('=');
				ret[s[0]] = s[1];
			}
			return ret;
		})(),
		file: (a.pathname.match(/\/([^\/?#]+)$/i) || [,''])[1],
		hash: a.hash.replace('#',''),
		path: a.pathname.replace(/^([^\/])/,'/$1'),
		relative: (a.href.match(/tps?:\/\/[^\/]+(.+)/) || [,''])[1],
		segments: a.pathname.replace(/^\//,'').split('/')
	};
}

·

多维数组根据某个字段排序(默认升序,)

	var obj = [{"sort":1,"data":"xx你好"},{"sort":5,"data":"meet是一种缘分"}];
	obj.sort(function (obj1, obj2) {
		var val1 = obj1.sort;
		var val2 = obj2.sort;
		if (val1 < val2) {  //如需降序 改成 '>'
			return - 1;
		} else if (val1 > val2) {  //如需降序 改成 '>'
			return 1;
		} else {
			return 0;
		}
	});

·

字符串转utf-8

function toUtf8(str) {
	var out, i, len, c;
	out = "";
	len = str.length;
	for (i = 0; i < len; i++) {
		c = str.charCodeAt(i);
		if ((c >= 0x0001) && (c <= 0x007F)) {
			out += str.charAt(i);
		} else if (c > 0x07FF) {
			out += String.fromCharCode(0xE0 | ((c >> 12) & 0x0F));
			out += String.fromCharCode(0x80 | ((c >> 6) & 0x3F));
			out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));
		} else {
			out += String.fromCharCode(0xC0 | ((c >> 6) & 0x1F));
			out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));
		}
	}
	return out;
}

.

复制指定内容

function copy(text, callback){
	var tag = document.createElement('input');
	tag.setAttribute('id', 'cp_hgz_input');
	tag.value = text;
	document.getElementsByTagName('body')[0].appendChild(tag);
	document.getElementById('cp_hgz_input').select();
	document.execCommand('copy');
	document.getElementById('cp_hgz_input').remove();
	if(callback) {callback(text)}
}

字符串去重

/**
     * 过滤相同字符串:
     * 111
     * 222
     * 111
     * 333
     * @param s
	 * @param mark
     * @returns {string}
     */
filterEquallyMember: function filterEquallyMember(s, mark) {
        var arr = s.split(mark);
        var x = new Set(arr);
        var distinctResult = "";
        x.forEach(function (element, sameElement, x) {
            distinctResult += element + ",";
        });
        if (distinctResult) {
            distinctResult = distinctResult.substring(0, distinctResult.length - 1);
        }
        return distinctResult;
    }

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