ajax innerHTML 拼接js 不执行，呈现解决方法

源代码：

$.ajax({

url : "<%=request.getContextPath()%>/cartree/testCartree.action",

type : "GET",

cache : false,

async : false,

data : {

"method" : "selFun"

},

dataType : "json",

contentType: "application/x-www-form-urlencoded; charset=utf-8",

success : function(json){

var lsgj_tree_context = "<script type=\"text/javascript\">"

+"c = new dTree(\"c\");"

+"c.config.useCookies = false;"

+"c.config.useStatusText = true;"

+"c.config.closeSameLevel = true;";

for(var i=0;i<json.length;i++){

if(json[i].deptNo == "0"){

//root 根目录

lsgj_tree_context += "c.add("+json[i].deptNo+", -1, \""+json[i].deptName+"\");";

}else{

// 一级目录

lsgj_tree_context += "c.add("+json[i].deptNo+", 0, \""+json[i].deptName+"\", \"\", \"\",\"\", \"\", \"\", \"\", \"cradio\", \"radio\", \"\",\"\");";

var carObj = json[i].carObjList;

for(var j =0;j<carObj.length;j++){

// 二级目录

lsgj_tree_context+="c.add("+carObj[j].cid+", "+json[i].deptNo+", \""+carObj[j].ccp+"\", \"\", \"\", \"\", \"\", \"\", \"\", \"cradio\", \"radio\", \"\",\"\");";

}

}

}

lsgj_tree_context+="document.write(c);";

lsgj_tree_context+=" </script";

lsgj_tree_context+=">";

alert(lsgj_tree_context);

document.getElementById("lsgj_tree").innerHTML =lsgj_tree_context;

}

});

问题：ajax innerHTML在拼接js字符串放入指定标签的时候，标签内js不能正常执行

解决办法：引用innerHTML.js ,调用set_innerHTML方法

（1）<script type="text/javascript" src="<%=request.getContextPath()%>/common/innerhtml.js"></script>

(2)$.ajax({

url : "<%=request.getContextPath()%>/cartree/getListCartree.action",

type : "GET",

cache : false,

async : false,

data : {

"method" : "selFun"

},

dataType : "json",

contentType: "application/x-www-form-urlencoded; charset=utf-8",

success : function(json){

var ssjk_tree_context = "<script type=\"text/javascript\">"

+"a = new dTree(\"a\");"

+"a.config.useCookies = false;"

+"a.config.useStatusText = true;"

+"a.config.closeSameLevel = false;"; // 判断是否兄弟菜单同时展开

for(var i=0;i<json.length;i++){

if(json[i].deptNo == "0"){

//root 根目录

ssjk_tree_context += "a.add("+json[i].deptNo+", -1, \""+json[i].deptName+"\");";

}else{

// 一级目录

ssjk_tree_context += "a.add("+json[i].deptNo+", 0, \""+json[i].deptName+"\", \"\", \"\",\"\", \"\", \"\", \"\", \"aradio\", \"checkbox\", \"\",\"\");";

var carObj = json[i].carObjList;

for(var j =0;j<carObj.length;j++){

// 二级目录

ssjk_tree_context+="a.add("+carObj[j].cid+", "+json[i].deptNo+", \""+carObj[j].ccp+"\", \"\", \"\", \"\", \"\", \"\", \"\", \"aradio\", \"checkbox\", \"\",\"\");";

}

}

}

ssjk_tree_context+="document.write(a);";

ssjk_tree_context+=" <\/script";

ssjk_tree_context+=">";

set_innerHTML("ssjk_tree",ssjk_tree_context,""); // 将js利用innerHTML添加到指定标签

}

});

注：innerHTML.js 代码

/* innerhtml.js

* Copyright Ma Bingyao <andot@ujn.edu.cn>

* Version: 1.9

* LastModified: 2006-06-04

* This library is free. You can redistribute it and/or modify it.

* http://www.coolcode.cn/?p=117
*/

var global_html_pool = [];

var global_script_pool = [];

var global_script_src_pool = [];

var global_lock_pool = [];

var innerhtml_lock = null;

var document_buffer = "";

function set_innerHTML(obj_id, html, time) {

if (innerhtml_lock == null) {

innerhtml_lock = obj_id;

}

else if (typeof(time) == "undefined") {

global_lock_pool[obj_id + "_html"] = html;

window.setTimeout("set_innerHTML('" + obj_id + "', global_lock_pool['" + obj_id + "_html']);", 10);

return;

}

else if (innerhtml_lock != obj_id) {

global_lock_pool[obj_id + "_html"] = html;

window.setTimeout("set_innerHTML('" + obj_id + "', global_lock_pool['" + obj_id + "_html'], " + time + ");", 10);

return;

}

function get_script_id() {

return "script_" + (new Date()).getTime().toString(36)

+ Math.floor(Math.random() * 100000000).toString(36);

}

document_buffer = "";

document.write = function (str) {

document_buffer += str;

}

document.writeln = function (str) {

document_buffer += str + "\n";

}

global_html_pool = [];

var scripts = [];

html = html.split(/<\/script>/i);

for (var i = 0; i < html.length; i++) {

global_html_pool[i] = html[i].replace(/<script[\s\S]*$/ig, "");

scripts[i] = {text: '', src: '' };

scripts[i].text = html[i].substr(global_html_pool[i].length);

scripts[i].src = scripts[i].text.substr(0, scripts[i].text.indexOf('>') + 1);

scripts[i].src = scripts[i].src.match(/src\s*=\s*(\"([^\"]*)\"|\'([^\']*)\'|([^\s]*)[\s>])/i);

if (scripts[i].src) {

if (scripts[i].src[2]) {

scripts[i].src = scripts[i].src[2];

}

else if (scripts[i].src[3]) {

scripts[i].src = scripts[i].src[3];

}

else if (scripts[i].src[4]) {

scripts[i].src = scripts[i].src[4];

}

else {

scripts[i].src = "";

}

scripts[i].text = "";

}

else {

scripts[i].src = "";

scripts[i].text = scripts[i].text.substr(scripts[i].text.indexOf('>') + 1);

scripts[i].text = scripts[i].text.replace(/^\s*<\!--\s*/g, "");

}

}

var s;

if (typeof(time) == "undefined") {

s = 0;

}

else {

s = time;

}

var script, add_script, remove_script;

for (var i = 0; i < scripts.length; i++) {

var add_html = "document_buffer += global_html_pool[" + i + "];\n";

add_html += "document.getElementById('" + obj_id + "').innerHTML = document_buffer;\n";

script = document.createElement("script");

if (scripts[i].src) {

script.src = scripts[i].src;

if (typeof(global_script_src_pool[script.src]) == "undefined") {

global_script_src_pool[script.src] = true;

s += 2000;

}

else {

s += 10;

}

}

else {

script.text = scripts[i].text;

s += 10;

}

script.defer = true;

script.type = "text/javascript";

script.id = get_script_id();

global_script_pool[script.id] = script;

add_script = add_html;

add_script += "document.getElementsByTagName('head').item(0)";

add_script += ".appendChild(global_script_pool['" + script.id + "']);\n";

window.setTimeout(add_script, s);

remove_script = "document.getElementsByTagName('head').item(0)";

remove_script += ".removeChild(document.getElementById('" + script.id + "'));\n";

remove_script += "delete global_script_pool['" + script.id + "'];\n";

window.setTimeout(remove_script, s + 10000);

}

var end_script = "if (document_buffer.match(/<\\/script>/i)) {\n";

end_script += "set_innerHTML('" + obj_id + "', document_buffer, " + s + ");\n";

end_script += "}\n";

end_script += "else {\n";

end_script += "document.getElementById('" + obj_id + "').innerHTML = document_buffer;\n";

end_script += "innerhtml_lock = null;\n";

end_script += "}";

window.setTimeout(end_script, s);

}