JS-If-Else-Statement.html

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    <h1>JavaScript If...else Statement</h1>
    <img src="images/if-else-statment.png" alt="" />
    <p>
      It evaluates the content whether condition is true or false. The syntax of
      JavaScript if-else statement is given below.
    </p>
    <pre
      class="language-javascript"
      tabindex="0"
    ><code class="language-javascript"><span class="token keyword">if</span><span class="token punctuation">(</span>expression<span class="token punctuation">)</span><span class="token punctuation">{</span>  
   <span class="token comment">//content to be evaluated if condition is true  </span>
<span class="token punctuation">}</span>  
<span class="token keyword">else</span><span class="token punctuation">{</span>  
   <span class="token comment">//content to be evaluated if condition is false  </span>
<span class="token punctuation">}</span></code></pre>
    <br /><br /><br />
    <pre
      class="language-markup"
      tabindex="0"
    ><code class="language-markup"><span class="token doctype"><span class="token punctuation">&lt;!</span><span class="token doctype-tag">DOCTYPE</span> <span class="token name">html</span><span class="token punctuation">&gt;</span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>html</span> <span class="token attr-name">lang</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>en<span class="token punctuation">"</span></span><span class="token punctuation">&gt;</span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>head</span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>meta</span> <span class="token attr-name">charset</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>UTF-8<span class="token punctuation">"</span></span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>meta</span> <span class="token attr-name">name</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>viewport<span class="token punctuation">"</span></span> <span class="token attr-name">content</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>width=device-width, initial-scale=1.0<span class="token punctuation">"</span></span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>meta</span> <span class="token attr-name">http-equiv</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>X-UA-Compatible<span class="token punctuation">"</span></span> <span class="token attr-name">content</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>ie=edge<span class="token punctuation">"</span></span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>title</span><span class="token punctuation">&gt;</span></span>JavaScript<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>title</span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>script</span><span class="token punctuation">&gt;</span></span><span class="token script"><span class="token language-javascript">
        <span class="token comment">/* Greater Than If Else Condition */</span>
        <span class="token keyword">var</span> a <span class="token operator">=</span> <span class="token number">15</span><span class="token punctuation">;</span>
      
        <span class="token keyword">if</span> <span class="token punctuation">(</span>a <span class="token operator">&gt;</span> <span class="token number">30</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
            document<span class="token punctuation">.</span><span class="token function">write</span><span class="token punctuation">(</span><span class="token string">"A is Greater"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token punctuation">}</span><span class="token keyword">else</span> <span class="token punctuation">{</span>
            document<span class="token punctuation">.</span><span class="token function">write</span><span class="token punctuation">(</span><span class="token string">"A is smaller"</span><span class="token punctuation">)</span><span class="token punctuation">;</span> 
        <span class="token punctuation">}</span>
		document<span class="token punctuation">.</span><span class="token function">write</span><span class="token punctuation">(</span><span class="token string">"&lt;br&gt;&lt;br&gt;"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		
        <span class="token comment">/* Equal to If Else Condition */</span>
        <span class="token keyword">var</span> x <span class="token operator">=</span> <span class="token number">100</span><span class="token punctuation">;</span>
        
        <span class="token keyword">if</span> <span class="token punctuation">(</span>x <span class="token operator">==</span> <span class="token number">100</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
            document<span class="token punctuation">.</span><span class="token function">write</span><span class="token punctuation">(</span><span class="token string">"X is Same"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token punctuation">}</span><span class="token keyword">else</span> <span class="token punctuation">{</span>
            document<span class="token punctuation">.</span><span class="token function">write</span><span class="token punctuation">(</span><span class="token string">"X is not smaller"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token punctuation">}</span>
    </span></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>script</span><span class="token punctuation">&gt;</span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>head</span><span class="token punctuation">&gt;</span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>body</span><span class="token punctuation">&gt;</span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>body</span><span class="token punctuation">&gt;</span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>html</span><span class="token punctuation">&gt;</span></span></code></pre>
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