<script type="text/javascript"> function sortNumberqixy(a, b) { /* 马克-to-win returned value type: Array object JavaScript syntax: - myArray.sort() - myArray.sort(aComparator) Argument list: aComparator A function object that will compare two items and returns a flag indicating their o...
6.一个小写转大写的JS: document.getElementById("output").value = document.getElementById("input").value.toUpperCase(); 7.JS中的值类型:String,Number,Boolean,Null,Object,Function 8.JS中的字符型转换成数值型:parseInt(),parseFloat() 9.JS中的数字转换成字符型:(""+变量) 10.JS中的取字符串长度...
{ 215 function inside(y) { 216 return x + y; 217 } 218 return inside; 219 } 220 fn_inside = outside(3); // Think of it like: give me a function that adds 3 to whatever you give it 221 result = fn_inside(5); // returns 8 222 223 result1 = outside(3)(5); // ...
First, JScript in this case breaks the main rule of FE that they should not be stored in the variable object by name of functions. An optional FE name which should be stored in the special object and be accessible only inside the function itself (and nowhere else) here is stored directly...
Naming rules: same as JavaScript variables. parametersOptional. A set of arguments (parameter names), separated by commas. The arguments are real values received by the function from the outside. Inside the function, the arguments are used as local variables. ...
The value of this, when used in a function, is the object that "owns" the function. Note thatthisis not a variable. It is a keyword. You cannot change the value ofthis. You have already learned that the code inside a JavaScript function will execute when "something" invokes it. ...
In a browser the page object is the browser window. The function above automatically becomes a window function. Note This is a common way to invoke a JavaScript function, but not a very good practice. Global variables, methods, or functions can easily create name conflicts and bugs in the ...
// passing object as this value in call() methodgreet.call(human); Run Code Output My name is Judah Parker. I am 26 years old. In the above example, we have defined thegreet()function inside which we have defined a variablestringthat can access the values ofhuman. ...
What's more, you can create functions that are flexible about the number of parameters they accept. This is possible thanks to the arguments array that is created automatically inside each function. Here's a function that simply returns whatever parameters are passed to it:...
Correct type of input is assured inside the function. The function's code becomes easier to understand as it only contains the actual function logic. Lower level utility functions called by the type-checked function can possibly be kept simpler as they don't need to do additional type checking...