![]() ![]() So prefer v-show if you need to toggle something very often, and prefer v-if if the condition is unlikely to change at runtime. Generally speaking, v-if has higher toggle costs while v-show has higher initial render costs. ![]() Its function is similar to that of the IFxx operation code. The IF operation code allows a series of operation codes to be processed if a condition is met. It avoids the need for an additional level of nesting. In comparison, v-show is much simpler - the element is always rendered regardless of initial condition, with CSS-based toggling. The ELSEIF operation is the combination of an ELSE operation and an IF operation. But there is more to it than meets the eye. V-if is also lazy: if the condition is false on initial render, it will not do anything - the conditional block won't be rendered until the condition becomes true for the first time. The operator is used in conditional statements, and when paired with a :, can function as a compact alternative to if.else statements. V-if is "real" conditional rendering because it ensures that event listeners and child components inside the conditional block are properly destroyed and re-created during toggles. V-show doesn't support the element, nor does it work with v-else. Else if statements: this specifies a new test if the first condition is false. ![]() Else statements: where if the same condition is false it specifies the execution for a block of code. ![]() The difference is that an element with v-show will always be rendered and remain in the DOM v-show only toggles the display CSS property of the element. If statements: where if a condition is true it is used to specify execution for a block of code. ![]()
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