I have an issue with jQuery 1.7.1 and the ajax function in firefox. I am doing an ajax call that requests json from a CMIS server. In chrome everything works fine. Let me give you an example: function ajaxCall(url, requestType, isAsync, parameters, doneCb, failCb) { $.ajax(url, { type: requestType, async: isAsync, data: parameters }).done( alert("test")
我有一个问题与jQuery 1.7.1和Firefox中的ajax功能。 我正在做一个从CMIS服务器请求json的ajax调用。 在铬一切正常。 让我举一个例子: function ajaxCall(url, requestType, isAsync, parameters, doneCb, failCb) { $.ajax(url, { type: requestType, async: isAsync, data: parameters }).done( alert("test"), // the following function gets not executed in firefox
我想强制Chrome调试器通过代码断行,或者使用某种类型的评论标记,如console.break() 。 You can use debugger; within your code. If the developer console is open, execution will break. It works in firebug as well. Set up a button click listener and call the debugger; Example $("#myBtn").click(function() { debugger; }); Demo http://jsfiddle.net/hBCH5/ Resources on debugging in JavaScrip
我想强制Chrome调试器通过代码断行,或者使用某种类型的评论标记,如console.break() 。 你可以使用debugger; 在您的代码中。 如果开发者控制台处于打开状态,则执行会中断。 它也适用于萤火虫。 设置一个按钮点击监听debugger;并调用debugger; 例 $("#myBtn").click(function() { debugger; }); 演示 http://jsfiddle.net/hBCH5/ 有关在JavaScript中调试的资源 http://www.laurencegellert.com/2012/05/the-
I have a script that detects Javascript errors on my website and sends them to my backend for reporting. It reports the first error encountered, the supposed line number, and the time. EDIT to include doctype: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="e
我有一个脚本,检测我的网站上的Javascript错误,并将它们发送到我的后端进行报告。 它报告遇到的第一个错误,假定的行号和时间。 编辑包括文档类型: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en" xmlns:fb="http://www.facebook.com/2008/fbml"> ... &
This question already has an answer here: Difference between a method and a function 33 answers All methods are functions; not all functions are methods. Using your example: function myObj() { this.result = "RESULT: "; // is this a method or a function ? function innerFunc(a, b) { return a + b; //alert(this.result) not possible } this.sum = function(a
这个问题在这里已经有了答案: 方法和函数之间的区别33答案 所有的方法都是功能; 并非所有功能都是方法。 使用你的例子: function myObj() { this.result = "RESULT: "; // is this a method or a function ? function innerFunc(a, b) { return a + b; //alert(this.result) not possible } this.sum = function(a, b) { alert(this.result + innerFunc(a, b)); } }
This question already has an answer here: Difference between a method and a function 33 answers Methods are simply function references stored in an object property. Method in Javascript is merely a concept, not actually an existing syntactical part. Also, there is no method keyword in Javascript. function foo() { /* whatever */ } var bar = {}; bar.baz = foo; // You'd consider this a func
这个问题在这里已经有了答案: 方法和函数之间的区别33答案 方法只是存储在object属性中的function引用。 Javascript中的方法仅仅是一个概念,实际上并不是现有的语法部分。 另外,Javascript中没有method关键字。 function foo() { /* whatever */ } var bar = {}; bar.baz = foo; // You'd consider this a function call foo(); // While the following is actually syntactically also a function call // you migh
This question already has an answer here: Is there a better way to do optional function parameters in JavaScript? [duplicate] 29 answers 您可以检查typeof输入,如果它是一个函数function test(input, callback) { let input = input; let cb = callback; if (typeof input === 'function') { cb = input; input = 'some value'; } cb(input); } test("message", function (
这个问题在这里已经有了答案: 有没有更好的方法来在JavaScript中做可选的函数参数? 29个答案 您可以检查typeof输入,如果它是一个函数function test(input, callback) { let input = input; let cb = callback; if (typeof input === 'function') { cb = input; input = 'some value'; } cb(input); } test("message", function (result) { console.log(result) }) test(func
This question already has an answer here: Javascript || operator 5 answers Is there a better way to do optional function parameters in JavaScript? [duplicate] 29 answers In words: if there is no processMethod, create it empty. || works with booleans, so it checks if the first operand processMethod has a boolean-equivalent. If processMethod is defined and not null, the boolean-equivalen
这个问题在这里已经有了答案: Javascript || 操作员5回答 有没有更好的方法来在JavaScript中做可选的函数参数? 29个答案 用语言来说: if there is no processMethod, create it empty. || 与布尔值一起工作,所以它检查第一个操作数processMethod是否具有布尔等值。 如果processMethod已定义且不为null,则布尔等值为true 。 如果processMethod未定义或为null,则布尔等值为false 。 在假的情况下, || 查找第
This question already has an answer here: Is there a better way to do optional function parameters in JavaScript? [duplicate] 29 answers Yes, the logical equivalent is to test the length of the arguments array-like object: p.show = function(message, status, timer){ if (arguments.length < 3 ) timer = 1000; // default value //do stuff }; If you want to set it to the defaul
这个问题在这里已经有了答案: 有没有更好的方法来在JavaScript中做可选的函数参数? 29个答案 是的,逻辑上的等价物是测试arguments数组类对象的长度: p.show = function(message, status, timer){ if (arguments.length < 3 ) timer = 1000; // default value //do stuff }; 如果您想要将其设置为默认值(即使手动传入该值),但传入的值undefined ,您也可以使用: p.show = function(message, st
This question already has an answer here: Is there a better way to do optional function parameters in JavaScript? [duplicate] 29 answers 如果该参数未传递给该函数,则该参数undefined 。 function foo( x, y, opt ){ if( typeof opt === 'undefined' ){ opt = 1; } ... } 在JavaScript中,你可以添加像这样的默认值: function foo(x,y,opt){ if(typeof(opt)==='undefined') opt = 1; //you
这个问题在这里已经有了答案: 有没有更好的方法来在JavaScript中做可选的函数参数? 29个答案 如果该参数未传递给该函数,则该参数undefined 。 function foo( x, y, opt ){ if( typeof opt === 'undefined' ){ opt = 1; } ... } 在JavaScript中,你可以添加像这样的默认值: function foo(x,y,opt){ if(typeof(opt)==='undefined') opt = 1; //your code }
This question already has an answer here: Is there a better way to do optional function parameters in JavaScript? [duplicate] 29 answers Try this var myFunction = function(variable) { variable = variable || 0; // this variant works for all falsy values "", false, null, undefined... // if you need check only undefiend, use this variant // variable = typeof(variable) == 'undefined' ?
这个问题在这里已经有了答案: 有没有更好的方法来在JavaScript中做可选的函数参数? 29个答案 尝试这个 var myFunction = function(variable) { variable = variable || 0; // this variant works for all falsy values "", false, null, undefined... // if you need check only undefiend, use this variant // variable = typeof(variable) == 'undefined' ? 0 : variable }; 默认功能参数将在ES6中; ES5不