- Mitchell, three of the primary developers of Microsoft's version of JavaScript. - The value of the onClick attribute is a string of JavaScript code to be executed when the user clicks the button. - There are currently two versions of the core JavaScript language. - Part II of the book documents client-side JavaScript. - HTML tag, you can specify arbitrary JavaScript code as the value of the onLoad attribute. - The value of the JavaScript statements becomes the value of the entity. - Because of the special purpose of the <. - The integral part of the number, followed by. - A decimal point and the fractional part of the number.. - This use of the backslash is explained in the section that follows.. - from the usual interpretation of the single-quote character. - variable outside of the function. - One of the built-in features of JavaScript is the ability to concatenate strings. - we are testing to see if the value of the variable a is equal to the number 4. - of the object, but this usage can be. - Thus a[2] refers to the third element of the array a.. - When we use a string in an "object context", (i.e., when we try to access a property or method of the string). - This String object is used in place of the primitive string value. - valueOf() method returns a number, that value is the result of the conversion. - property of the value or to reference a method of the object. - operator to access an array element of the value.. - If s is a string, then each of the following lines is legal JavaScript:. - Table 9.1 summarizes each of the possible conversions.. - In Table 4.1 the column labeled A specifies the associativity of the operator. - operator tests for the exact opposite of the. - representation instead of the equivalent floating-point representation. - A zero is used for the new first bit, and the value of the 32nd bit is lost. - assignment expression is the value of the right-hand operand. - Remember that each assignment expression has a value that is the value of the right-hand side. - So in the above code, the value of the first assignment (the rightmost one) becomes the right-hand side for the second assignment (the middle one) and this value becomes the right-hand side for the last (leftmost) assignment.. - As we'll see in Chapter 7, Objects, you can use the Object.assign() method in Navigator 3.0 to override the behavior of the assignment operator.. - The value returned by the conditional operator depends on the Boolean value of the first operand. - If the first operand is false, then the value is the value of the third operand.. - The value of the typeof operator is a string indicating the data type of the operand.[3]. - Example uses of the new operator are:. - of the loop. - The syntax of the for statement is:. - Before the body of the loop is. - Within the body of the loop, you can use this variable to look up the value of the object's property with the. - Suppose JavaScript needs to look up the value of the name n. - funcname is the name of the function that is being defined. - These names can be used as variables within the body of the function. - statements that form the body of the function are not executed. - This value is the value of the function invocation expression. - The syntax of the return statement is:. - When the return statement is executed, the expression is evaluated, and returned as the value of the function. - rest of the function goes here.... - This chapter has introduced each of the statements of the JavaScript language. - Functions are an important and complex part of the JavaScript language. - the name of the function. - Here's a function that takes one of the above functions. - The other property of the Function object is caller. - One of the interesting features of JavaScript functions is that you can assign properties to them. - To define the static variable, just set it as a property of the function:. - They are also one of the most important. - The value on the left of the . - The value on the right of the . - should be the name of the property. - This line assigns the value of self to the creator property of the object win. - Having defined the method m() of the object o , we invoke it like this:. - Figure 7.1 illustrates several of the important prototype concepts. - the X coordinate of the center of the circle this.y = y. - the Y coordinate of the center of the circle this.r = r. - the radius of the circle. - Note the use of the constant defined above. - setting them as properties of the prototype object.. - own unshared copy of the property.. - and other methods of the Math object are class methods. - to the prototype object of the constructor. - create an instance of the Circle class c.r = 2.2. - array notation, the name of the property is expressed as a string. - operator to access the properties of the portfolio object. - of the object referred to by the this keyword.. - It is passed one argument, which is the value on the right-hand side of the operator. - properties of the Location object. - A reference to the array should appear to the left of the brackets. - property of the array is set to the number of arguments that were passed to the constructor.. - The Array.reverse() method reverses the order of the elements of an array. - of the next available array element. - initializes any of the array elements. - parseInt() can even take a second argument, which specifies the radix (base) of the number to be parsed.. - returns the result of the multiplication eval("radius >. - to a function, a copy of the datum is passed to the function. - there is only ever one copy of the actual value. - it is the reference to the value that is assigned, not a copy of the value, and not the value itself. - A distinct copy of the value is passed to the function. - of the function. - A reference to the array is passed to the function, not a copy of the array.. - Therefore, the function can change the contents of the array through. - If the function changes its copy of the reference, that. - This is another version of the add_to_totals() function. - this line has no effect outside of the function.. - Example 9.5: The assign() Method. - The behavior of the <SCRIPT>. - Note that the value of the FOR attribute must be an object name assigned with the NAME attribute when the object is defined. - And the value of the EVENT attribute is the name of the event handler (but not the name of the event itself).. - is the string value of the last JavaScript statement in the URL. - of an HTML document, none of the. - of the document will have been defined yet. - of the document is parsed
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