// ==UserScript==
// @name         s1麻将脸r板显示脚本
// @namespace    Majfacesinreddit
// @version      0.1
// @description  在r板显示麻将脸
// @author       huayu3rd
// @match        https://www.reddit.com/r/s1bbs/**
// @downloadURL none
// ==/UserScript==

//参考了https://greasyfork.org/scripts/372459
(function() {
function replace(search,replacement){
	var xpathResult = document.evaluate(
		"//*/text()",
		document,
		null,
		XPathResult.ORDERED_NODE_ITERATOR_TYPE,
		null
	);
	var results = [];
	// We store the result in an array because if the DOM mutates
	// during iteration, the iteration becomes invalid.
	while(res = xpathResult.iterateNext()) {
		results.push(res);
	}
	results.forEach(function(res){
		res.textContent = res.textContent.replace(search,replacement);
	})
}
    //上面那一段我也不懂什么意思，作用应该就是让replace仅限于可见文本。代码来源：http://bit.ly/2PR7uDG

window.onload = function () {
	var zhengze1 = new RegExp("{{mjl:","g")
        var zhengze2 = new RegExp(".png}}","g")
        var zhengze3 = new RegExp(".gif}}","g")
	var img1 = "<img src =\"http://static.saraba1st.com/image/smiley/face2017/";
        var img2 = ".png\">";
        var img3 = ".gif\">";
	document.body.innerHTML = document.body.innerHTML.replace(zhengze1, img1);
        document.body.innerHTML = document.body.innerHTML.replace(zhengze2, img2);
        document.body.innerHTML = document.body.innerHTML.replace(zhengze3, img3);
}
})();