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The script element can directly be added inside the body of the page. It should start with the tag <script> and end with </script> tag. The script can also be added to the head tag of the web page. Similarly the other way is by placing the script in a separate file which gets downloaded on the client's machine when the page is requested.
|How we can access Elements using java script?|
|What does isNaN function do?|
|Return true if the argument is not a number.|
We can declare an array like this
|What is the difference between an alert box and a confirmation box?|
An alert box displays only one button which is the OK button whereas the Confirm box displays two buttons namely OK and cancel.
|What is a prompt box/ input box?|
A prompt box allows the user to enter input by providing a text box.
|How about 2+5+'8'?|
Since 2 and 5 are integers, this is number arithmetic, since 8 is a string, its concatenation, so 78 is the result.
You can use the parseInt() and parseFloat() methods. Notice that extra letters following a valid number are ignored.
You can append the number with an empty string
|What does break and continue statements do?|
|Continue statement continues the current loop (if label not specified) in a new iteration whereas break statement exits the current loop.|
|Ratio and Proportion|
175 men can dig a canal of 3150 meters long in 36 days. How many men are required to dig a canal of 3900 meters long in 24 days?
24 men working at 8 hours a day can do a piece of work in 15 days. In how many days can 20 men working at 9 hours a day do the same work?
10 men can lay a road of 75 Km long in 5 days. In how many days can 15 men lay a road of 45 Km long?
Rice costing Rs. 480/- is needed for 8 members for 20 days. What is the cost of rice required for 12 members for 15 days?
The mess charge for 35 students for 24 days is Rs. 6300/-. In how many days will the mess charges be Rs. 3375/- for 25 students?
|Time and Work|
18 men can dig a well in 10 days. After they have worked for 4 days, how many more men shall be employed to complete the work in 4 days from then?
If 80 men can do a piece of work in 10 days, how many men are required to do the same work in 4 days?
If 80 men can do a piece of work in 10 days, in how many days can 40 men do the same piece of work?
|General Computer Knowledge|
What kind of material does ‘IC’ in computers made of?
The force required to produce an acceleration of 4 m/s2 in an object of mass 9 kg is?
Some seeds have hooks and spines. It helps the seeds to__________?
Which of the following modes of heat transfer is faster?
Which of the following reproduces from underground stem?
Lichens are a symbiotic association of?
The unit of relative density is?
|Problems on Ages|
The ages of Gyanendra and Jitendra are in the ratio of 12:7 respectively. After 6 years, the ratio of their ages will be 3:2 respectively . find the difference in their ages?
|Time and Work|
X can do a piece of work in 20 days, while Y can do in 10 days. If Y worked at it for 8 days,then X can finish the remaining work in______.?
In a certain code, BELIEF is written as AFKKDI. How is SELDOM written in that code?
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