ABCDEFGHIJKLMNOPQRSTUVWXYZ
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console.log(variable_or_data);console.log()
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integer_var = string_variable.indexOf('some_smaller_string');.indexOf()
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integer_var = string_variable.lastIndexOf('some_smaller_string');.lastIndexOf()
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string2_var = string1_variagle.toUpperCase();.toUpperCase()
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string2_var = string1_variagle.toLowerCase();.toLowerCase()
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sub_string = string1.slice(2,7);.slice()
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replacedcherecterstring = string1.replace('car','bike');.replace()
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extended_string = original_string.concat(string_to_be_added_further);.concat()
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Proper_string = string_having_whitespace_in_front.trim();.trim()
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char_at_3 = string.charAt(3);.charAt()
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var len = arr.length;.length
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arr.sort().sort()
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arr,push(data).push()
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alert(message_string)alert()
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string name = messsage(messege_string);prompt()
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let yes = confirm(messege_string);confirm()
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arr.forEach(function fun(variable){ console.log(variable);}).forEach()
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var main_var = document.getElementById('main');document.getElementById()
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let NavImg_var = document.getElementByClassName('navimg');document.getElementByClassName()
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let selector_var = document.querySelector('#navimg');.querySelector()
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para_containg_var.style.display = 'block';.style.
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para_containg_var.addEventListener('mouseover', function fun(){}).addEventListner()
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setTimeout(function_name, time_after_which_function_run ,var1,var2,...)setTimeout()
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setInterval(function_name, time_interval_of_function)run, var1, var2,...);setInterval()
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let now = new Date();Date()
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let month = now.getMonth();.getMonth()
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let yr = now.getFullYear();.getFullYear()
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let day = now.getDate();.getDate()
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let hours = now.getHours();.getHours()
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now.setDate(12);.setDate()
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now.setMInutes(29);.setMinute()
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now.setInterval(updateTime,1000); while updateTime is manually written function.setInterval()
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id_name_of_a_element.innerHTML = new Date() ;.innerHTML
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