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    JavaScript Operators

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    تاريخ التسجيل : 16/02/2011

    JavaScript Operators

    مُساهمة  Admin في الثلاثاء فبراير 22, 2011 5:11 pm

    JavaScript Operators
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    = is used to assign values.

    + is used to add values.


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    The assignment operator = is used to assign values to JavaScript variables.

    The arithmetic operator + is used to add values together.

    y=5;
    z=2;
    x=y+z;

    The value of x, after the execution of the statements above is 7.


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    JavaScript Arithmetic Operators
    Arithmetic operators are used to perform arithmetic between variables and/or values.

    Given that y=5, the table below explains the arithmetic operators:

    Operator Description Example Result
    + Addition x=y+2 x=7 y=5
    - Subtraction x=y-2 x=3 y=5
    * Multiplication x=y*2 x=10 y=5
    / Division x=y/2 x=2.5 y=5
    % Modulus (division remainder) x=y%2 x=1 y=5
    ++ Increment x=++y x=6 y=6
    x=y++ x=5 y=6
    -- Decrement x=--y x=4 y=4
    x=y-- x=5 y=4


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    JavaScript Assignment Operators
    Assignment operators are used to assign values to JavaScript variables.

    Given that x=10 and y=5, the table below explains the assignment operators:

    Operator Example Same As Result
    = x=y x=5
    += x+=y x=x+y x=15
    -= x-=y x=x-y x=5
    *= x*=y x=x*y x=50
    /= x/=y x=x/y x=2
    %= x%=y x=x%y x=0


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    The + Operator Used on Strings
    The + operator can also be used to add string variables or text values together.

    To add two or more string variables together, use the + operator.

    txt1="What a very";
    txt2="nice day";
    txt3=txt1+txt2;

    After the execution of the statements above, the variable txt3 contains "What a verynice day".

    To add a space between the two strings, insert a space into one of the strings:

    txt1="What a very ";
    txt2="nice day";
    txt3=txt1+txt2;

    or insert a space into the expression:

    txt1="What a very";
    txt2="nice day";
    txt3=txt1+" "+txt2;

    After the execution of the statements above, the variable txt3 contains:

    "What a very nice day"


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    Adding Strings and Numbers
    The rule is: If you add a number and a string, the result will be a string!

      الوقت/التاريخ الآن هو الجمعة نوفمبر 24, 2017 10:28 pm