Javascript对象拷贝(clone)

1. [代码]方法代码 function cp(source, target) { function isBaseType(v) { var type = typeof v; var basetype = { "string": true, "number": true, "boolean": true, "function": true, "undefined": true }; return basetype[type] || v === null; } function createClone(v) { var clone = []; if (!(v instanceof Array)) { clone = {}; } return clone; } function createCloneFn(fn) { var fncode = fn.toString(); var regex_params = /^functions+?(()([sS]*?)())/; var params = []; var params_index = 2; var result = fncode.match(regex_params); if (result) { var param_code = result[params_index]; if (param_code) { params = param_code.split(",") } } var fncode = fncode.replace(regex_params, "").replace(/^s*?{|}s*?$/g,""); fncode += " console.log(clone)"; params.push(fncode); return Function.apply(null, params); ; } function createVal(v) { var val = v; if( typeof v =="function" ) { val = createCloneFn(v); } return val ; } if (source instanceof Function) { target = createCloneFn(source); } else if (source instanceof Array) { if (target instanceof Array) { var source_size = source.length; for (var index = 0; index < source_size; index++) { var item = source[index]; if (!isBaseType(item)) { var clone_array = createClone(item); target.push(clone_array); arguments.callee(item, clone_array); } //基础类型 else { target.push( createVal(item)); } } } else { //console.log("数组拷贝不成立"); } } else if (typeof source == "object") { if (!isBaseType(target)) for (var attrname in source) { var val = source[attrname]; //是否为基础类型 if (!isBaseType(val)) { var clone_obj = createClone(val); target[attrname] = clone_obj; arguments.callee(val, clone_obj); } else { http://www.huiyi8.com/moban/ target[attrname] = createVal(val); } } } return target; } 2. [代码]测试代码 var target = []; var source = [ [{ a: { "show": function() { alert(1) } } }] ]; target =cp(source, target);

1. [代码]方法代码 function cp(source, target) { function isBaseType(v) { var type = typeof v; var basetype = { "string": true, "number": true, "boolean": true, "function": true, "undefined": true }; return basetype[type] || v === null; } function createClone(v) { var clone = []; if (!(v instanceof Array)) { clone = {}; } return clone; } function createCloneFn(fn) { var fncode = fn.toString(); var regex_params = /^functions+?(()([sS]*?)())/; var params = []; var params_index = 2; var result = fncode.match(regex_params); if (result) { var param_code = result[params_index]; if (param_code) { params = param_code.split(",") } } var fncode = fncode.replace(regex_params, "").replace(/^s*?{|}s*?$/g,""); fncode += " console.log(clone)"; params.push(fncode); return Function.apply(null, params); ; } function createVal(v) { var val = v; if( typeof v =="function" ) { val = createCloneFn(v); } return val ; } if (source instanceof Function) { target = createCloneFn(source); } else if (source instanceof Array) { if (target instanceof Array) { var source_size = source.length; for (var index = 0; index < source_size; index++) { var item = source[index]; if (!isBaseType(item)) { var clone_array = createClone(item); target.push(clone_array); arguments.callee(item, clone_array); } //基础类型 else { target.push( createVal(item)); } } } else { //console.log("数组拷贝不成立"); } } else if (typeof source == "object") { if (!isBaseType(target)) for (var attrname in source) { var val = source[attrname]; //是否为基础类型 if (!isBaseType(val)) { var clone_obj = createClone(val); target[attrname] = clone_obj; arguments.callee(val, clone_obj); } else { http://www.huiyi8.com/moban/ target[attrname] = createVal(val); } } } return target; } 2. [代码]测试代码 var target = []; var source = [ [{ a: { "show": function() { alert(1) } } }] ]; target =cp(source, target);