动态加载js

function loadScript(scriptArr){
	if(scriptArr.length > 0){
		var script = scriptArr[0];
		jQuery.getScript(script,function(){
			scriptArr.splice(0,1);
			loadScript(scriptArr);
		});
	}
}
$(document).ready(function(){
	$(function(){
		$.ajax({
			url: 'static/js/script.json',
			data: {},
			type: 'get',
			async : false,/**同步*/
			success : function(response) {
				if(response){
					var scriptArr = eval('('+response+')');
					if(scriptArr){
						loadScript(scriptArr);
					}
				}
			},
			error: function(response) {
				console && console.log("js json请求失败!");
			}
		})
	});
});

 

另外一种动态加载js?(有待进一步验证)

var JCore = { //构造核心对象
	version : 1.0,
	$import : function (importFile) {
		var file = importFile.toString();
		var IsRelativePath = (file.indexOf("$") == 0 || file.indexOf("/") == -1); //相对路径(相对于JCore)
		var path = file;
		if (IsRelativePath) { //计算路径,$开头表示使用当前脚本路径，/开头则是完整路径
			if (file.indexOf("$") == 0)
				file = file.substr(1);
			path = JCore.$dir + file;
		}
		var newElement = null,
		i = 0;
		var ext = path.substr(path.lastIndexOf(".") + 1);
		if (ext.toLowerCase() == "js") {
			var scriptTags = document.getElementsByTagName("script");
			for (var i = 0; ilength; i++) {
				if (scriptTags[i].src && scriptTags[i].src.indexOf(path) != -1)
					return;
			}
			newElement = document.createElement("script");
			newElement.type = "text/javascript";
			newElement.src = path;
		} else if (ext.toLowerCase() == "css") {
			var linkTags = document.getElementsByTagName("link");
			for (var i = 0; ilength; i++) {
				if (linkTags[i].href && linkTags[i].href.indexOf(path) != -1)
					return;
			}
			newElement = document.createElement("link");
			newElement.type = "text/css";
			newElement.rel = "Stylesheet";
			newElement.href = path;
		} else
			return;
		var head = document.getElementsByTagName("head")[0];
		head.appendChild(newElement);
	},
	$dir : function () {
		var scriptTags = document.getElementsByTagName("script");
		for (var i = 0; ilength; i++) {
			if (scriptTags[i].src && scriptTags[i].src.match(/JCore/.js$ / )) {
				path = scriptTags[i].src.replace(/JCore/.js$ / , "");
				return path;
			}
		}
		return "";
	}
}